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1
Danin-Poleg, Y., N. Reis, S. Baudracco-Arnas, M. Pitrat, J. E. Staub, M. Oliver, P. Arus, C. M. deVicente, and N. Katzir. "Simple sequence repeats in Cucumis mapping and map merging." Genome 43, no. 6 (December 1, 2000): 963–74. http://dx.doi.org/10.1139/g00-065.
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Thirty-four polymorphic simple-sequence repeats (SSRs) were evaluated for length polymorphism in melon (Cucumis melo L.) and cucumber (Cucumis sativus L.). SSR markers were located on three melon maps (18 on the map of 'Vedrantais' and PI 161375, 23 on the map of 'Piel de Sapo' and PI 161375, and 16 on the map of PI 414723 and 'Dulce'). In addition, 14 of the markers were located on the cucumber map of GY14 and PI 183967. SSRs proved to be randomly distributed throughout the melon and cucumber genomes. Mapping of the SSRs in the different maps led to the cross-identification of seven linkage groups in all melon maps. In addition, nine SSRs were common to both melon and cucumber maps. The potential of SSR markers as anchor points for melon-map merging and for comparative mapping with cucumber was demonstrated.Key words: microsatellites, Cucumis melo, melon, Cucumis sativus, cucumber, comparative mapping.
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Jedidi, Wissem, Kholoud Basalim, and Safa Bridaa. "Three classes of decomposable distributions." Open Mathematics 18, no. 1 (January 1, 2020): 1855–78. http://dx.doi.org/10.1515/math-2020-0124.
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Abstract In this work, we refine the results of Sendov and Shan [New representation theorems for completely monotone and Bernstein functions with convexity properties on their measures, J. Theor. Probab. 28 (2015), 1689–1725] on subordinators obtained by the class of Bernstein functions stable by the Mellin-Euler differential operator I − x d d x I-x\tfrac{\text{d}}{\text{d}x} by giving a stochastic interpretation, proving monotonicity properties of the related distributions and providing additional extensions.
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Hao, Xin, Yu Fu, Wei Zhao, Lifei Liu, Rengui Bade, Agula Hasi, and Jinfeng Hao. "Genome-wide Identification and Analysis of the MADS-box Gene Family in Melon." Journal of the American Society for Horticultural Science 141, no. 5 (September 2016): 507–19. http://dx.doi.org/10.21273/jashs03727-16.
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The MADS-box gene family encodes a type of transcription factor, and plays a key role in the growth and development of plants. Here, we identified 62 MADS-box genes in the melon (Cucumis melo) genome using bioinformatics methods. These genes were divided into type I Mα, Mγ, and Mδ subfamilies (26 members) and type II MIKCC subfamilies (36 members) by phylogenetic analysis. There were no genes in type II AGL12, BS, TM8, and MIKC* subfamilies, and type I Mβ subfamilies. Conserved motif analysis showed that all motifs had a subfamily-specific distribution except the M domain. The expression analysis of the MADS-box genes showed different expression characteristics. In summary, this study is the first to identify melon MADS-box genes and analyze their gene structures, subfamily distribution, and expression characteristics. These results provide a foundation for investigating the functions of the melon MADS-box genes.
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Shebanin, V. "Determining the optimal parameters of machines for processing the seed mass of vegetable and melon crops." UKRAINIAN BLACK SEA REGION AGRARIAN SCIENCE 106, no. 2 (2020): 95–103. http://dx.doi.org/10.31521/2313-092x/2020-2(106)-11.
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To determine the optimal parameters of machines for isolating the seed mass of vegetable and melon crops, a modeling method is presented, which is based on the nonlinear canonical decomposition of a random vector. A block diagram of the procedure for calculating the parameters of the canonical expansion is presented. The method of mathematical modeling was tested in the study of the technological process of separating melon seeds on an experimental installation. Mathematical models of the third order for purity and loss of seeds are presented, describing the technological process of separation for melon seeds.
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Gonzalez, Ivan, Lin Jiu, and Victor H. Moll. "An extension of the method of brackets. Part 2." Open Mathematics 18, no. 1 (September 16, 2020): 983–95. http://dx.doi.org/10.1515/math-2020-0062.
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Abstract The method of brackets, developed in the context of evaluation of integrals coming from Feynman diagrams, is a procedure to evaluate definite integrals over the half-line. This method consists of a small number of operational rules devoted to convert the integral into a bracket series. A second small set of rules evaluates this bracket series and produces the result as a regular series. The work presented here combines this method with the classical Mellin transform to extend the class of integrands where the method of brackets can be applied. A selected number of examples are used to illustrate this procedure.
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Yang, Yu, Ze Yuan Yu, Ya Qin Xu, and Qin Shao. "Analysis of Volatile Compounds from Oriental Melons (Cucumis melo L.) Using Headspace SPME Coupled with GC-MS." Advanced Materials Research 554-556 (July 2012): 2102–5. http://dx.doi.org/10.4028/www.scientific.net/amr.554-556.2102.
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The quantitative distribution of volatile compounds in the different oriental melon varieties and in the different parts of oriental melon was investigated. Volatile compounds were extracted by solid-phase microextraction (SPME) and analysed by gas chromatography-mass spectrometry (GC-MS). Fifty-four compounds were identified including 33 esters, 3 thioesters, 7 aldehydes, 8 alcohols, 1 acid, 1 ketone and 1 phenol, among which esters were found to be the major constituents in ripe oriental melon. The results showed that ethyl acetate, sulfur-containing esters and compounds containing a straight nine-carbon chain were present at high concentrations in oriental melons, particularly acetic acid phenylmethyl ester. The majority of ester compounds of oriental melon decreased and the aldehyde compounds increased after storage at -20 °C and the distribution of volatiles was also found to be different in the umbilicus, middle and pedicel of an oriental melon Qitian 1 according to their carbon chain length and quantity.
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Vargas, Pablo F., Francine de S. Galatti, Jean de O. Souza, Renata Castoldi, Hamilton Cesar de O. Charlo, and Leila T. Braz. "Physicochemical characteristics of experimental net melon hybrids developed in Brazil." Horticultura Brasileira 31, no. 3 (September 2013): 351–55. http://dx.doi.org/10.1590/s0102-05362013000300002.
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The objective of this study was to evaluate the physicochemical characteristics of parents and experimental hybrids of net melon improvement program developed in the Universidade Estadual Paulista (UNESP), in Jaboticabal, São Paulo state, Brazil. Six net melon lineages (Jab-3, Jab-7, Jab-11, Jab-18, Jab-9, and Jab-20), belonging to the breeding program of melon from the UNESP were used and all their hybrid combinations as well as their reciprocal crosses. We used the randomized blocks design, with three replications and 38 treatments. From these 38 treatments [six lines, 15 hybrids, 15 reciprocal crosses and two commercial cultivars (Bônus nº2 and Louis)] we evaluated following physicochemical characteristics: fruit mass, pulp thickness, fruit coat thickness, netting degree of the coat, seed looseness, soluble solids, titratable acidity, pH, maturation index, pulp firmness, and Vitamin C. The minimum mass of 0.8 kg per fruit of net melon and the minimum of 10°Brix soluble solids allowed to identify the genotypes: Jab-9 x Jab-3, Jab-18 x Jab-20, Jab-18 x Jab-11, Jab-7 x Jab-20, Jab-7 x Jab-11, Jab-20 x Jab-7, and, Jab-3 x Jab-20, as promising. These genotypes are therefore suitable for participating in assessment tests in the main net melon producing areas of Brazil and on different planting dates.
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Medeiros, Jeane E. de, Rosa de LR Mariano, Elvira MR Pedrosa, and Elineide B. da Silveira. "Inconsistency of the biological control of Meloidogyne incognita race 2 in melon by endophytic bacteria." Horticultura Brasileira 27, no. 3 (September 2009): 319–24. http://dx.doi.org/10.1590/s0102-05362009000300010.
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We obtained 61 rhizobacterium isolates from rhizosphere soil samples collected in melon commercial fields located in Mossoró, Rio Grande do Norte State, Brazil. These isolates, along with 56 endophytic bacteria from the Collection of Cultures of the Plant Bacteriology Laboratory of the Universidade Federal Rural de Pernambuco, were tested for controlling Meloidogyne incognita race 2 in melon. To infest the soil with nematodes, 1000 eggs of Meloidogyne incognita race 2 per plant were placed in pots where seedlings of the yellow-type melon, cultivar AF 682, were growing for 10 days. Two days before, 20 mL of bacterial suspension (0.7 OD570nm) were poured into each pot. After 60 days, fresh root biomass, gall index, egg mass, and the nematode reproduction factor were assessed. Among the 117 isolates screened, the endophytic Bacillus ENM7, ENM10, and ENM51 were selected because they significantly reduced egg mass and/or gall index. However, when tested again, separately and in mixtures, these isolates nor confirmed their efficiency in vivo, neither affected juvenile emergence in vitro. These results give evidence on the inconsistency of using endophytic-bacteria in the control of M. incognita race 2 in melon.
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RODRIGUES, HIGOR D. D., and ROBERT W. SITES. "Revision of Limnocoris Stål (Heteroptera: Nepomorpha: Naucoridae) of the tropical Andes." Zootaxa 4986, no. 1 (June 17, 2021): 1–93. http://dx.doi.org/10.11646/zootaxa.4986.1.1.
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The species of Limnocoris of the tropical Andes of South America are revised, including the descriptions of eight new species: L. chrysosetosus n. sp. from Ecuador; L. elongatus n. sp. and L. emboliatus n. sp. from Colombia; L. molanoi n. sp. from Colombia and Ecuador; L. luisae n. sp. from Colombia and Venezuela; L. longirostris n. sp. from Venezuela; L. nieseri n. sp. from Colombia, Ecuador, and Panama; and L. reynosoi n. sp. from Brazil, Colombia, and Venezuela. Further, supplemental descriptions are provided for the previously described species. The following taxa are resurrected from synonymy and their species status are restored: Limnocoris peruvianus Melin stat. restit. from synonymy with L. pectoralis Montandon, and L. stali Montandon stat. restit. from synonymy with L. borellii Montandon. The following synonymies are proposed, with junior synonyms in brackets: L. borellii Montandon [L. horvathi Montandon n. syn.], L. dubiosus Montandon [L. aymarana Poisson n. syn.], L. malkini La Rivers [L. pulchellus n. syn.], L. obscurus Montandon [L. trilobatus Nieser, González, & Eichelkraut, n. syn.], L. ochraceus Montandon [L. maculatus De Carlo n. syn.], L. pallescens (Stål) [L. bergrothi Montandon n. syn.], L. pectoralis Montandon [L. rivalis Melin n. syn.], L. peruvianus Melin [L. calii Nieser, González & Eichelkraut n. syn.] and L. stali Montandon [L. robustus Roback & Nieser n. syn., L. carcharus La Rivers n. syn.]. Lectotypes are designated for five species: L. aymarana, L. bergrothi, L. borellii, L. dubiosus, and L. stali. An illustrated taxonomic key and distribution maps also are presented.
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Oliver, M., J. Garcia-Mas, M. Cardús, N. Pueyo, A. I. López-Sesé, M. Arroyo, H. Gómez-Paniagua, P. Arús, and M. C. de Vicente. "Construction of a reference linkage map for melon." Genome 44, no. 5 (October 1, 2001): 836–45. http://dx.doi.org/10.1139/g01-073.
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A map of melon (Cucumis melo L.) with 411 markers (234 RFLPs, 94 AFLPs, 47 RAPDs, 29 SSRs, five inter-SSRs, and two isozymes) and one morphological trait (carpel number) was constructed using the F2 progeny of a cross between the Korean accession PI161375 and the Spanish melon type 'Pinyonet Piel de Sapo'. RFLPs were obtained using 212 probes from different genomic and cDNA melon libraries, including 16 Arabidopsis ESTs, 13 Cucumis known genes, and three resistant gene homologues. Most loci (391) mapped to 12 major linkage groups, spanning a total genetic distance of 1197 cM, with an average map interval of 3 cM/marker. The remaining 21 loci (six RAPDs and 15 AFLPs) were not linked. A majority (66%) of the markers were codominant (RFLPs, SSRs, and isozymes), making them easily transferable to other melon crosses. Such markers can be used as a reference, to merge other melon and cucumber maps already constructed. Indeed, some of them (23 SSRs, 14 RFLPs, one isozyme, and one morphological trait) could act as anchor points with other published cucurbit maps.Key words: Cucumis melo, genetic map, molecular markers, RFLPs, SSRs.
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Faizi, S., A. Wasi, B. S. Siddiqui, and A. Naz. "New Terpenoids from the Roots of Melia azedarach." Australian Journal of Chemistry 55, no. 4 (2002): 291. http://dx.doi.org/10.1071/ch01101.
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Two new terpenoids, bakayanolide (1) and 2α-hydroxy-3β-methoxy-6-oxo-13α,14β,17α-lanosta-7,24-dien-21,16β-olide (2), together with the known compounds 6β-hydroxy-3-oxo-13α,14β,17α-lanosta-7,24-dien-21,16β-olide (3), sendanolactone (4), kulactone (5), and β-sitosterol have been isolated from the ethanolic root extracts of Melia azedarach. Triterpenoids (4), (5), and β-sitosterol have been identified previously from M. azedarach, while it is the first instance of the isolation of (3) from this source. The identity of these compounds was established through extensive spectroscopic methods (infrared and mass spectroscopy, 1H and 13C nuclear magnetic resonance) as well as appropriate two-dimensional nuclear magnetic resonance experiments. Bakayanolide (1) belongs to the rare class of C11 odd terpenes. Compounds (3) and (4) possessed moderate cytotoxic activity against KB cell lines.
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Li, Xie, Da Peng Jia, Ji Hao Ci, and Qian Zhang. "Volatile Organic Compounds in Melon Seeds Plastic Bags." Applied Mechanics and Materials 488-489 (January 2014): 150–53. http://dx.doi.org/10.4028/www.scientific.net/amm.488-489.150.
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Eight volatile organic compounds (VOCs) in melon seeds printing and packaging materials have been analyzed by a headspace gas chromatography and mass spectrometry method. The results of external standard method show that PET and aluminum foil as raw materials of melon seeds plastic bags contain less VOCs, but PE contains much more VOCs. There are more VOCs in printing inks. Red ink has the most amount of VOCs (2777.27 mg/kg). The binder contains 143.574 mg/kg of VOCs. PE and printing inks may be the main sources of VOCs in the melon seeds plastic bags. Residues of benzenes in the front plastic bag materials exceed national standards. The amount of VOCs and benzenes in the back plastic bag materials all exceed national standards.
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Ernur, Akıner. "Case study of extracting soil and land use maps to determine agricultural best management practices that can be applied to prevent erosion and fertile soil loss." Zastita materijala 61, no. 4 (2020): 313–27. http://dx.doi.org/10.5937/zasmat2004313e.
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The Büyük Melen river in the Melen Basin meets Istanbul's drinking water needs. Protecting the basin against nutrient pollution is vital in this regard as well. This study focuses on the best possible management practice (BMPs) in the Melen Basin to reduce the export of nutrients from the agricultural areas. A region comprising industrial, farming, and residential zones is the Melen basin. There is a forecast of global climate change in Turkey, and scientists and also governors must know which areas are no longer farming zones and which will be more appropriate for agriculture. Turkey's territory is a high-risk desertification area. In Melen Basin, the soil type and land use properties have been determined and mapped using GIS and Soil and Water Assessment Tool (SWAT). Buffer BMP filter strips can be used effectively for nutrient protection that can be carried from residential areas and motorways by runoff. The region in the basin is steep, and its clay and sandy soil structures are ideal for parallel terraces, grade stabilization, strip, and contour cultivation. Unless the ground can not retain or store water, the soil can undergo sudden floods, causing an erosion of the soil's productive surface layer. When we protect the land, this condition is reduced. The land type and land use mapping should be drawn up as soon as possible for the remaining Turkish basins by scientific methods. This research is intended to be an illustration for researches on other agricultural basins in Turkey and the world for this reason.
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Hidayat, Dadang Dayat, Arie Sudaryanto, Yose Rizal Kurniawan, Ashri Indriati, and Diang Sagita. "DEVELOPMENT AND EVALUATION OF DRUM COFFEE ROASTING MACHINE FOR SMALL-SCALE ENTERPRISES." INMATEH Agricultural Engineering 60, no. 1 (April 30, 2020): 79–88. http://dx.doi.org/10.35633/inmateh-60-09.
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The design, manufacture and evaluation of a drum coffee roasting machine had been carried out. The aimed of the study was to develop a small-scale drum roaster to meet the demand of the small enterprises at design and function. The development stage consisted of sizing of the main components, creating technical drawings, determination of component materials, manufacture and performance test. The dimension of the roaster drum was 168.28 mm in diameter and 250 mm in length; the capacity of the roaster was 750 gram/ batch. Results of the test determined that the coffee roasting machine had worked well as expected. The preheating time was 15-22 minutes at a drum speed of 67.5 rpm. The initial loading temperature was 180°C. The test using arabica coffee bean reveals that the average crack time was 8.78 minutes, development time was 2.35 minutes, decreasing mass and increasing volume ranged from 19.80 – 20.30 % and 49.97 – 54.85 % respectively. The average crack time of Robusta coffee bean was 10 minutes; development time was 3 minutes, decreasing mass and increasing volume ranged from 10.87 – 14.90 % and 44.93 – 56.20 %, respectively. The required time to roast Arabica green coffee bean to the light-medium and medium-dark level was 11.3 and 12.38 minutes respectively, besides for Robusta green coffee beans was 13.00 and 14.00 minutes respectively.
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Gallio, Ezequiel, Sabrina Finatto Machado, Francislene Junia Telles da Silva, Nidria Dias Cruz, and Darci Alberto Gatto. "CARACTERIZAÇÃO DE PROPRIEDADES TECNOLÓGICAS DE QUATRO FOLHOSAS DETERIORADAS POR TÉRMITAS DO GÊNERO Nasutitermes." Nativa 6 (December 17, 2018): 763. http://dx.doi.org/10.31413/nativa.v6i0.5655.
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O objetivo deste trabalho consistiu em analisar a deterioração causada por térmitas em madeiras de Mezilaurus itauba (Meisn.) Taub. ex Mez, Cordia americana (L.) Gottshling & J. E. Mill., Melia azedarach L. e Parapiptadenia rigida (Benth.) Brenan, após ensaio de preferência alimentar. Foram confeccionados 20 corpos de prova de cada espécie, com dimensões de 15 x 15 x 260 mm (tangencial x radial x longitudinal). Os parâmetros tecnológicos avaliados foram a massa específica básica (ρb), a perda de massa (PM), o módulo de elasticidade (MOE) e ruptura (MOR) provenientes do ensaio de flexão estática e a dureza. Finalizado o ensaio, a espécie com menor perda de massa foi a Melia azedarach, possivelmente devido à composição dos seus extrativos. Para as espécies Cordia americana e Parapiptadenia rigida, quanto às propriedades mecânicas, verificou-se redução significativa somente no MOE das amostras deterioradas em comparação com as do grupo controle. Conclui-se, portanto, que, a maior resistência da espécie Melia azedarach está associada à sua composição química, sendo que em quase todas as espécies madeireiras houve decréscimo nos parâmetros mecânicos (MOE, MOR e dureza Janka) devido ao ataque dos térmitas Nasutitermes.Palavras-chave: biodeterioração, cupins, propriedades tecnológicas, espécies florestais. TECHNOLOGICAL PROPERTIES CHARACTERIZATION OF FOUR HARDWOODS DETERIORATED BY GENDER Nasutitermes TERMITES ABSTRACT:The objective of this work was to analyze the deterioration caused by termites in woods of Mezilaurus itauba (Meisn.) Taub. ex Mez, Cordia americana (L.) Gottshling & J. E. Mill., Melia azedarach L. and Parapiptadenia rigida (Benth.) Brenan, after food preference assay. Were made 20 test specimens of each species, with dimensions of 15 x 15 x 260 mm (tangential x radial x longitudinal). The physical parameters were the basic mass (ρb), the mass loss (PM), the modulus of elasticity (MOE) and rupture (MOR) from the static bending test and Janka hardness. After the test, the species with the lowest mass loss was Melia azedarach, possibly due to your extractives composition. For the species Cordia americana and Parapiptadenia rigida, about the mechanical properties, it was observed significant reduction only in the MOE of deteriorated samples compared to the control group. It's concluded that the Melia azedarach specie higher resistance it’s associated with your chemical composition, and in almost all wood species there was a decrease in mechanical parameters (MOE, MOR and Janka hardness) due to attack of Nasutitermes termites.Keywords: biodeterioration, termites, technological properties, forest species.
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Sousa, Valéria F. de O., Caciana C. Costa, Genilson L. Diniz, João B. dos Santos, Marinês P. Bomfim, and Kilson P. Lopes. "Growth and gas changes of melon seedlings submitted to water salinity." Revista Brasileira de Engenharia Agrícola e Ambiental 23, no. 2 (February 2019): 90–96. http://dx.doi.org/10.1590/1807-1929/agriambi.v23n2p90-96.
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ABSTRACT The melon is an outstanding fruit crop in Brazil, mainly in the Northeast region due to favorable conditions for cultivation. Water salinity affects the growth and production of several species, but there is tolerance among cultivars of the same species. The objective of this study was to evaluate the growth and gas exchange in melon seedlings subjected to water salinity. Experiment was carried out in a greenhouse belonging to the Center of Sciences and Agri-Food Technology, Federal University of Campina Grande, Pombal, PB, Brazil, from September to October 2016. The experimental design was a randomized complete block design in a 6 x 5 factorial scheme, with four replicates, for six cultivars of melon (Natal, Solares, Goldex, Iracema, Mandacaru and Amarelo Ouro) and five irrigation water salinity levels with the following electrical conductivities: 0.3, 1.1, 1.9, 2.7 and 3.5 dS m-1. Each experimental unit consisted of a polypropylene container with a volume capacity of 0.350 dm3, which contained soil + Basaplant® commercial substrate at a ratio of 2:1. At 25 days after sowing, the plants were evaluated for growth, gas exchange and dry mass accumulation. Increased salinity of irrigation water inhibits the growth, dry mass accumulation and physiological processes of melon cultivars. The cultivar Natal showed to be more tolerant, while the cultivars Solares, Goldex, Iracema and Mandacaru were moderately sensitive and the cultivar Amarelo Ouro was more sensitive to the salinity of irrigation water.
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SHALABY, Osama Abd El-Salam, and Mohamed Moustafa EL-MESSAIRY. "Humic acid and boron treatment to mitigate salt stress on the melon plant." Acta agriculturae Slovenica 111, no. 2 (October 29, 2018): 349. http://dx.doi.org/10.14720/aas.2018.111.2.10.
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<p>Salinity is one of the main abiotic stress factors which limit the growth and productivity of plants, however, the nutritional status of plants is the first brick in the resistance wall against stresses. Therefore, a factorial experiment was undertaken to investigate effects of soil applied humic acid (0, 7, 14, 21 l.ha<sup>-1</sup>) and boron foliar spraying (0, 50, 100 ppm) and their interaction on growth and yield of melon plant under saline conditions. The results suggested that the treatments soil application of humic acid and the boron spraying successfully mitigated the deleterious effects of salt stress and influenced growth and yield of melon plant. Humic acid at 21 l.ha<sup>-1</sup> or boron spray at 50 ppm exhibited an improvement in growth and yield of melon, in terms of plant length, plant fresh and dry mass, chlorophyll (SPAD), fruit mass, total yield, and also leaf nutrient content (N and K) and total soluble solids (TSS) of fruits, while reduced the sodium content of leaves. The combined treatment of humic acid at 21 l.ha<sup>-1</sup> and boron spraying at 50 ppm was found to be more effective for the melon plant to improving growth performance and the crop yield by 21 % as compared with the control group under saline conditions.</p>
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Yonny, Melisa E., Ariel Rodríguez Torressi, Mónica A. Nazareno, and Soledad Cerutti. "Development of a Novel, Sensitive, Selective, and Fast Methodology to Determine Malondialdehyde in Leaves of Melon Plants by Ultra-High-Performance Liquid Chromatography-Tandem Mass Spectrometry." Journal of Analytical Methods in Chemistry 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/4327954.
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Early production of melon plant(Cucumis melo)is carried out using tunnels structures, where extreme temperatures lead to high reactive oxygen species production and, hence, oxidative stress. Malondialdehyde (MDA) is a recognized biomarker of the advanced oxidative status in a biological system. Thus a reliable, sensitive, simple, selective, and rapid separative strategy based on ultra-high-performance liquid chromatography coupled to positive electrospray-tandem mass spectrometry (UPLC-(+)ESI-MS/MS) was developed for the first time to measure MDA, without derivatization, in leaves of melon plants exposed to stress conditions. The detection and quantitation limits were 0.02 μg·L−1and 0.08 μg·L−1, respectively, which was demonstrated to be better than the methodologies currently reported in the literature. The accuracy values were between 96% and 104%. The precision intraday and interday values were 2.7% and 3.8%, respectively. The optimized methodology was applied to monitoring of changes in MDA levels between control and exposed to thermal stress conditions melon leaves samples. Important preliminary conclusions were obtained. Besides, a comparison between MDA levels in melon leaves quantified by the proposed method and the traditional thiobarbituric acid reactive species (TBARS) approach was undertaken. The MDA determination by TBARS could lead to unrealistic conclusions regarding the oxidative stress status in plants.
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Carvalho, Sindoval C., Paulo A. S. Junior, Poliana S. Pereira, Renato A. Sarmento, Elizeu S. Farias, Carlos H. O. Lima, Gil R. Santos, and Marcelo C. Picanço. "Spatial Distribution of Frankliniella schultzei (Thysanoptera: Thripidae) in Open-Field Yellow Melon, With Emphasis on the Role of Surrounding Vegetation as a Source of Initial Infestation." Journal of Economic Entomology 113, no. 6 (September 29, 2020): 2997–3003. http://dx.doi.org/10.1093/jee/toaa219.
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Abstract Frankliniella schultzei (Trybom) is a serious pest of melon crops and is commonly found in the main producing areas of melon in Brazil (North and Northeast regions). This pest causes significant losses, damaging plants through feeding and tospovirus vectoring. Thus, the proper management of F. schultzei is crucial to prevent economic losses, and knowledge of the within-field distribution patterns of F. schultzei can be used to improve this pest management. This study aimed to determine the within-field distribution (through semivariogram modeling and kriging interpolation) and the factors associated with F. schultzei abundance in open-field yellow melon crops. We surveyed four yellow melon fields located in Formoso do Araguaia (Tocantins state, North Brazil) for thrips abundance in various crop stages (vegetative, flowering, and fruiting) in 2015 and 2016. Twelve models were fitted and it was determined that F. schultzei counts were strongly aggregated. The median spatial dependence was 4.79 m (range 3.55 to 8.02 m). The surface maps generated by kriging depicted an edge effect in fields 3 and 4. In addition, correlation analyses indicated that air temperature and presence of surrounding cucurbits are positively associated with F. schultzei abundance in yellow melon fields. Altogether, these insights can be combined for spatially based pest management, especially when the conditions (cucurbits in the surroundings and warmer periods) are favorable to F. schultzei.
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Jovanovic, Olga, and Gordana Stojanovic. "Headspace volatiles of selected melon, pear and carrot cultivars." Facta universitatis - series: Physics, Chemistry and Technology 12, no. 1 (2014): 41–46. http://dx.doi.org/10.2298/fupct1401041j.
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Herein, we report on the results of solvent- and sorbent-free HS-GC-MS (headspace - gas chromatography - mass spectrometry) analysis of the headspace volatiles (HSVs) of fruits of cultivated melon (Cucumis melo L. cultivar ?ananas dinja? [pineapple melon]) and pear (Pyrus communis L. cultivar ?Julska lepotica? [the beauty of July]), as well as of underground parts of carrot (Daucus carota L. cultivar ?nantes?). The obtained results are comparable to those of the traditional HS method. The main HSVs of melon were 2-methylbutyl acetate (42.9%), ethyl butanoate (11.4%), butyl acetate (10.1%), and methyl 2-methylbutanoate (9.8%); these are mostly biosynthetically related to amino acids. LOX (lipoxygenase) pathway products, hexanal (32.9%) and 1-hexanol (20.8%), and s sesquiterpene hydrocarbon, (E,E)-?-farnesene (24.9%), were found to be the dominant constituents of the pear headspace profile. The dominant HSVs of carrot underground parts were the monoterpenes sabinene (29.2%) and ?-pinene (21.5%).
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Cornelio, Vivian, Moacir Forim, Bruno Perlatti, João Fernandes, Paulo Vieira, Michael Napolitano, Richard Yost, and Maria da Silva. "Identification of Meliatoxins in Melia azedarach Extracts Using Mass Spectrometry for Quality Control." Planta Medica 83, no. 03/04 (September 6, 2016): 312–17. http://dx.doi.org/10.1055/s-0042-115773.
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Oliveira, Odair Honorato de, Roberto Cleiton Fernandes de Queiroga, Franciscleudo Bezerra da Costa, Evandro Franklin de Mesquita, Francisco Alves da Silva, Higínio Luan Oliveira Silva, and Alvaro Gustavo Ferreira da Silva. "Use of colored agrotextiles and length of stay in the cultivation of yellow melons." Research, Society and Development 10, no. 6 (June 6, 2021): e44610615951. http://dx.doi.org/10.33448/rsd-v10i6.15951.
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The coverage of plants with agrotextiles of different colors and length of stay may influence the productivity of the crop. The objective of this study was to evaluate the influence of the use of colored agrotextiles and their length of stay on the cultivation of melon plants in the conditions of the semiarid region of Paraíba. The experiment was fulfilled out at the Experimental Farm of the Federal University of Campina Grande, located in the municipality of São Domingos – PB. The treatments were distributed in a randomized block design in a 4 x 4 factorial scheme, with four repetitions and consisting of four colors of agrotextile (orange, white, gray, and blue) and four lengths of stay (15, 18, 21, and 24 days after transplanting). The following characteristics were evaluated: active photosynthetic radiation, average temperature, number of fruits per plant, average fruit mass and total productivity. The use of colored agrotextiles associated with the length of stay promoted a change in the production characteristics of the yellow melon fruits. The highest productivity, number of fruits, and mass of the melon fruits were obtained when the plants were covered with the orange-colored agrotextile at 15, 18, and 24 days after transplantation, respectively. The long stay of the agrotextile affected the content of total soluble solids.
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Nugent, Perry E., and P. D. Dukes. "Root-knot Nematode Resistance in Cucumis Species." HortScience 32, no. 5 (August 1997): 880–81. http://dx.doi.org/10.21273/hortsci.32.5.880.
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The southern root-knot nematode, Meloidogyne incognita [(Kofoid & White) Chitwood], causes serious economic losses to melon (Cucumis melo L.) production in the United States. The present study was conducted to determine if separable differences in nematode resistance of Cucumis melo could be found at some inoculum level. Five C. melo lines were compared with Cucumis metuliferus Naud. (C701A), a highly resistant species, for root necrosis, galling, egg mass production, and reproduction when inoculated at 0, 500, 1000, 2000, or 5000 nematode eggs per plant. Using these criteria, melon line C880 inoculated with 1000 eggs per plant was highly susceptible, while PI140471, PI 183311, and the cultivars Chilton, Georgia 47, Gulf Coast, Planters Jumbo, and Southland were less susceptible. In greenhouse tests with an inoculum level of 1000 eggs per plant, low levels of resistance were evident. A thorough screening of the available germplasm against M. incognita may identify higher levels of root-knot nematode resistance for incorporation into improved melon cultivars.
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Shahjahan, Reza M., and Farzana Yesmin. "Polytene chromosome maps of the melon fly Bactrocera cucurbitae (Diptera: Tephritidae)." Genome 45, no. 6 (December 1, 2002): 1167–74. http://dx.doi.org/10.1139/g02-081.
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Standard photographic maps of the polytene chromosomes are presented for the melon fly Bactrocera cucurbitae, a serious pest of fleshy fruits and vegetables. Five larval salivary gland polytene chromosomes (10 polytene arms) were isolated, and their characteristic features and landmarks have been recognized. Banding patterns of each of the polytene arms are presented, where variation in band intensity and puffs appear to reflect fundamental differences in chromosomes. The whole polytene genome has been typically mapped by dividing it into 100 sections and the subsections were lettered. The mitotic chromosomes of larval brain ganglia are also examined, five pairs of autosomes and an XX/XY sex chromosome pair. In addition, a heterochromatic mass corresponding to the sex chromosomes are observed in the polytene nuclei of salivary gland tissue. This investigation showed that B. cucurbitae has excellent cytological material for polytene chromosome analysis and proved to be very useful for obtaining more detailed genetic information on the pest's natural populations.Key words: Bactrocera cucurbitae, salivary gland, banding patterns, polytene maps.
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Soukup, J., M. Jursík, P. Hamouz, J. Holec, and J. Krupka. "Influence of soil pH, rainfall, dosage, and application timing of herbicide Merlin 750 WG (isoxaflutole) on phytotoxicity level in maize (Zea mays L.)." Plant, Soil and Environment 50, No. 2 (November 21, 2011): 88–94. http://dx.doi.org/10.17221/3687-pse.
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Pot trials and field studies were carried out to describe the influence of soil pH and rainfall on the phytotoxic effect of the herbicide Merlin 750 WG (isoxaflutole) in maize. Symptoms as bleaching, and root and shoot weight reduction in early growth of maize were found. In pot trials, a statistically significant crop injury in early growth of maize was found only at the herbicide dose of 100 and 130 g/ha followed by 30 mm precipitation directly after herbicide application in soils with pH 6.5 and 7.2. Bleaching and significant weight reduction of maize up to growth stage BBCH 13 were observed in field trials at treatments with early post-emergence application of Merlin and 20 mm precipitations. Bleaching symptoms recovered up to BBCH 19. Significant differences were found in maize shoot weight and cob yield between treatments with and without watering (20 mm irrigation), and between pre- and post-emergence application of Merlin under field conditions. No significant differences were found between herbicide doses tested.
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Pinheiro, Daniel Teixeira, Denise Cunha Fernandes dos Santos Dias, and Joyce de Oliveira Araújo. "Germination of melon seeds under water and thermal stress." Journal of Seed Science 39, no. 4 (December 2017): 440–47. http://dx.doi.org/10.1590/2317-1545v39n4188530.
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Abstract: Seeds vigor can influence seed performance under stress conditions. The objectives of this study were to evaluate the effect of water and thermal stress on germination and performance of melon seedlings, and to verify if germination under stress conditions is an efficient parameter to evaluate the vigor of these seeds. Four lots of ‘Golden Mine’ melon had their initial quality characterized by germination, first count, accelerated aging and seedling emergence tests. Germination under water stress was performed on a paper moistened with PEG 6000 solution at 0.06, -0.3, -0.6 and -0.9 MPa. The percentage and speed of germination, length and dry mass of the seedlings were evaluated. For the thermal stress experiment, cold test and germination at sub- (15 ºC) and supra-optimal (35 ºC) temperatures were performed, as well as at the ideal temperature (25 ºC). The germination of melon seeds under water stress induced by PEG 6000 at -0.3 and -0.6 MPa is an efficient method to detect differences in the physiological potential of lots of melon seeds, but these differences disappear under severe water stress (-0.9 MPa). Germination under sub-optimal temperatures also allows to identify differences in seeds performance and to classify them according to the vigor level.
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Demari, Gustavo Henrique, Ivan Ricardo Carvalho, Geri Eduardo Meneghello, Vinícius Jardel Szareski, João Roberto Pimentel, Ítala Thaísa Padilha Dubal, Cristian Troyjack, Tamires da Silva Martins, and Velci Queiróz De Souza. "PRODUCTION OF MELON (CUCUMISMELO L.) ELDORADO 300 SEEDLINGS GROWN IN DIFFERENT SUBSTRATES AND SOWING DEPTHS." Revista Científica Rural 21, no. 3 (December 12, 2019): 324–46. http://dx.doi.org/10.30945/rcr-v21i3.3078.
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Melon (Cucumis melo L.) is one of the most consumed vegetables in the world. In recent decades, sustainable production alternatives have been sought, replacing traditional substrates with the use of substrates from organic waste. The objective of this work was to evaluate the initial development of melon seedlings in different substrates and depths of sowing, as well as to identify relationships among the characters evaluated. The experiment was conducted in a greenhouse, with a randomized block experimental design arranged in a 3x4 factorial scheme, with three substrates (grape husk, rice husk, commercial substrate) and four sowing depths (1.0, 2, 0, 3.0 and 4.0 cm), with four replicates. The evaluated characters were index of emergency speed, shoot length and root, green and dry mass of the root and shoot. The analysis of variance revealed significant interaction between substrates x depth of sowing for the character of shoot length and root length. Pearson's linear correlation revealed two significant positive associations. It is concluded that melon seedlings are affected by the substrate types and depths of sowing, the substratum based on grape bark can replace commercial substrates, the bark of charred rice does not have a positive response in the production of melon seedlings and the correlation Of Pearson showed a positive relationship between characters.
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Kinoshita, Hiroki, and Yasuyuki Ogata. "Effect of Bitter Melon Extracts on Lipid Levels in Japanese Subjects: A Randomized Controlled Study." Evidence-Based Complementary and Alternative Medicine 2018 (November 8, 2018): 1–6. http://dx.doi.org/10.1155/2018/4915784.
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Dyslipidemia is exemplified by high levels of low-density lipoprotein cholesterol (LDL-C) and represents a risk factor for cardiovascular diseases and requires therapeutic intervention. Several experimental studies suggest that bitter melon (Momordica charantia) improves lipid metabolism in animal models of dyslipidemia and diabetes. This study evaluated the effects of bitter melon extracts on lipid metabolism following a 30-day treatment period in Japanese adults. This randomized, double-blind, placebo-controlled trial included 43 adult volunteers who received either 100 mg of hot-water extracts of bitter melon (n = 23) or a placebo (n = 20) three times daily for 30 days. The body weight, blood pressure, and levels of LDL-C and other blood parameters of each subject were measured before and after the study period. The results showed that the intervention group exhibited significantly lower LDL-C levels (P = 0.02) as compared with the control group, and there were no significant changes in either group in terms of body weight, body mass index, systolic pressure, diastolic pressure, total cholesterol, high-density lipoprotein cholesterol, triglycerides, or blood glucose. These results suggested that bitter melon extracts might effectively lower LDL-C levels in humans and exhibit potential therapeutic value for the management of dyslipidemic conditions.
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Da Silva Gomes, Jonath Werissimo, Nildo Da Silva Dias, Maria Alejandra Moreno Pizani, Kariolania Fortunato de Paiva, Josinaldo Lopes Araujo Rocha, Erbia Bressia Gonçalves Araújo, and Cleyton Dos Santos Fernandes. "Growth and mineral composition of the melon with different doses of phosphorus and organic matter." DYNA 86, no. 211 (October 1, 2019): 363–68. http://dx.doi.org/10.15446/dyna.v86n211.69776.
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It was aimed to evaluate the effect of doses of phosphorus and different doses of bovine manure on growth of melon Galia. The experiment was carried out in greenhouse utilizing pots filled with soil Chromic Luvissoil in design completely randomized with a 5 x 2 factorial arrangement, comprising five doses of bovine manure (0, 12, 16, 20, 24 t ha-1) and two doses of phosphorus (0 and 400 mg dm-3), with three replicates, totaling 30 experimental units. The results indicated that interaction of phosphorus with organic matter was significant effect on total dry mass of the melon plant. There was a reduction of the total dry mass when the plants were fertilized at the highest doses of bovine manure. The P content from leaf and stem increased gradually at higher doses of phosphorus. The phosphorus content in the soil increased according to the doses of organic material available.
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Kato, K., K. Handa, and M. Kameya-Iwaki. "Melon yellow spot virus: A Distinct Species of the Genus Tospovirus Isolated from Melon." Phytopathology® 90, no. 4 (April 2000): 422–26. http://dx.doi.org/10.1094/phyto.2000.90.4.422.
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A tospovirus-like virus recovered from netted melon was transmitted by Thrips palmi in a persistent manner but had different cytopathological features from tospoviruses previously reported. Viral nucleocapsid (N) was purified with two protective reagents, 2-mercaptoethanol and L-ascorbic acid, and RNA extracted from the viral nucleocapsid was used for genomic analysis. The virus had a genome consisting of three single-stranded RNA molecules. The open reading frame on the viral complementary strand, located at the 3′ end of the viral S RNA, encoded the N protein. The 3′ terminus of this RNA also contained an eight-nucleotide sequence similar to the conserved sequence at the 3′ end of genomic RNA molecules of tospoviruses. These features of the viral genome are identical to those of tospoviruses; therefore, this virus is considered to belong to the genus Tospovirus. Its N protein comprised 279 amino acids and had a molecular mass of 31.0 kDa. Comparisons of its amino acid sequence with those of known tospoviruses revealed less than 60% identity. This melon virus is concluded to be a distinct species in the genus Tospovirus, and the name Melon yellow spot virus is proposed.
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Silva, Rosangela Sarmento, HEITOR LOPES FERREIRA, JOSÉ RIBAMAR TOMAZ DA SILVA FILHO, and DÉRCIA ANTUNES DE SOUZA. "FATORES MOTIVACIONAIS: Um Estudo Empírico em uma Indústria Têxtil no Centro Oeste do Brasil." Revista de Administração de Roraima - RARR 6, no. 2 (December 23, 2016): 299. http://dx.doi.org/10.18227/2237-8057rarr.v6i2.3602.
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que influenciam a motivação no trabalho. O objetivo específico buscou identificar os fatores relacionados à satisfação no trabalho por parte dos funcionários a partir da identificação dos fatores intrínsecos e extrínsecos de Herzberg (1986) que mais influenciam o processo motivacional. Para tanto, esta pesquisa descritiva de natureza quantitativa aplicou questionário estruturado baseado nos modelos proposto por Meliá; Peiró; Calatayd (1986) e Meliá; Peiró (1998) junto a 75 funcionários de uma indústria têxtil do município de Goiânia (GO). O método de tratamento empregado foi à análise de cluster buscando-se assim, auferir os fatores motivacionais mais relevantes. Os resultados evidenciam que o nível de satisfação identificado permite julgar que o desempenho dos funcionários está sendo afetado de forma negativa, confirmando assim a hipótese dessa pesquisa, que existe diferença entre as médias dos grupos motivacionais e de satisfação. Tais resultados corroboram com a teoria aborda, na qual o processo motivacional do indivíduo se dá de forma intrínseca, em que cada um desenvolve impulsos motivacionais distintos em momentos diferentes, reconhecendo que estas forças afetam diretamente a maneira de encarar o trabalho e suas próprias vidas.
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Duduchava, Roland, and Medea Tsaava. "Mixed boundary value problems for the Helmholtz equation in a model 2D angular domain." Georgian Mathematical Journal 27, no. 2 (June 1, 2020): 211–31. http://dx.doi.org/10.1515/gmj-2019-2031.
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AbstractThe purpose of the present research is to investigate model mixed boundary value problems (BVPs) for the Helmholtz equation in a planar angular domain {\Omega_{\alpha}\subset\mathbb{R}^{2}} of magnitude α. These problems are considered in a non-classical setting when a solution is sought in the Bessel potential spaces {\mathbb{H}^{s}_{p}(\Omega_{\alpha})}, {s>\frac{1}{p}}, {1<p<\infty}. The investigation is carried out using the potential method by reducing the problems to an equivalent boundary integral equation (BIE) in the Sobolev–Slobodečkii space on a semi-infinite axis {\mathbb{W}^{{s-1/p}}_{p}(\mathbb{R}^{+})}, which is of Mellin convolution type. Applying the recent results on Mellin convolution equations in the Bessel potential spaces obtained by V. Didenko and R. Duduchava [Mellin convolution operators in Bessel potential spaces, J. Math. Anal. Appl. 443 2016, 2, 707–731], explicit conditions of the unique solvability of this BIE in the Sobolev–Slobodečkii {\mathbb{W}^{r}_{p}(\mathbb{R}^{+})} and Bessel potential {\mathbb{H}^{r}_{p}(\mathbb{R}^{+})} spaces for arbitrary r are found and used to write explicit conditions for the Fredholm property and unique solvability of the initial model BVPs for the Helmholtz equation in the non-classical setting. The same problem was investigated in a previous paper [R. Duduchava and M. Tsaava, Mixed boundary value problems for the Helmholtz equation in arbitrary 2D-sectors, Georgian Math. J. 20 2013, 3, 439–467], but there were made fatal errors. In the present paper, we correct these results.
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Ostrovsky, Dmitry. "A review of conjectured laws of total mass of Bacry–Muzy GMC measures on the interval and circle and their applications." Reviews in Mathematical Physics 30, no. 10 (October 12, 2018): 1830003. http://dx.doi.org/10.1142/s0129055x18300030.
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Selberg and Morris integral probability distributions are long conjectured to be distributions of the total mass of the Bacry–Muzy Gaussian Multiplicative Chaos measures with non-random logarithmic potentials on the unit interval and circle, respectively. The construction and properties of these distributions are reviewed from three perspectives: Analytic based on several representations of the Mellin transform, asymptotic based on low intermittency expansions, and probabilistic based on the theory of Barnes beta probability distributions. In particular, positive and negative integer moments, infinite factorizations and involution invariance of the Mellin transform, analytic and probabilistic proofs of infinite divisibility of the logarithm, factorizations into products of Barnes beta distributions, and Stieltjes moment problems of these distributions are presented in detail. Applications are given in the form of conjectured mod-Gaussian limit theorems, laws of derivative martingales, distribution of extrema of [Formula: see text] noises, and calculations of inverse participation ratios in the Fyodorov–Bouchaud model.
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Santos, José Rayres Pereira dos, and José Márcio dos Santos. "ESTUDO DA COMPETITIVIDADE DAS EXPORTAÇÕES DE MELÃO NOS ESTADOS DE RIO GRANDE DO NORTE E CEARÁ DE 1997- 2014." RDE - Revista de Desenvolvimento Econômico 1, no. 39 (April 2016): 616. http://dx.doi.org/10.21452/rde.v2i34.3656.
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O Brasil ocupa grande espaço no mercado mundial de frutas. Atualmente, o melão ocupa posição de destaque na pauta de exportações nacionais, sendo a fruta mais exportada pelo país. Sua produção é concentrada nos Estados do Ceará e Rio Grande do Norte. Tais
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Jeyaleela, G. Dayana, S. Irudaya Monisha, J. Rosaline Vimala, and A. Anitha Immaculate. "ISOLATION OF 2-CHLOROBENZIMIDAZOLE FROM MELIA DUBIA LEAF EXTRACT AND ITS STRUCTURAL CHARACTERISATION." International Journal of Pharmacy and Pharmaceutical Sciences 9, no. 10 (October 2, 2017): 67. http://dx.doi.org/10.22159/ijpps.2017v9i10.20573.
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Objective: Natural products from medicinal plants, either as isolated compounds or as standardized plant extracts exhibit promising source of medicinal activity against various diseases. The aim of the present work was to make an attempt of isolation of bioactive principle and characterization of the isolated compound, from the medicinal plant Melia dubaiMethods: The extraction was done by a cold percolation method and the compound was separated and isolated by chromatography technique such as a thin layer chromatography (TLC), column chromatography and high-performance liquid chromatography (HPLC). The isolated compound was crystallized and the structural characterization of the isolated compound was made using UV-Visible, FT-IR, 1H-NMR, GC-MS and MS techniques which confirmed the structure of the isolated compound.Results: The separated and isolated compound was characterized by both physical and spectral methods like Ultraviolet-Visible spectroscopy (UV-Visible), Fourier transform infrared spectroscopy (FT-IR), Proton Nuclear Magnetic Resonance Spectroscopy (1H-NMR), Gas chromatography-mass spectrometry (GC-MS), and Mass spectrometry(MS). Based on the studies, organizational characteristics of one bioactive principle were deciphered. The results revealed that the isolated species is 2-chlorobenzimidazole and it agreed well with the reported value and spectra for 2-chlorobenzimidazole.Conclusion: The above results obtained in this research work clearly indicated the promising occurrence of 2-chlorobenzimidazole in Media dubia plant leaves. The future scope of these studies may guide us to view the biological activity of the isolated compound.
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Park, So Deuk, Dong Geun Kim, and Il Kweon Yeon. "Soil temperature and egg mass formation by Meloidogyne arenaria on oriental melon (Cucumis melo L.)." Nematology 5, no. 5 (2003): 721–25. http://dx.doi.org/10.1163/156854103322746896.
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AbstractEgg masses of Meloidogyne arenaria race 2 were observed on the second planting of oriental melon by the time of its first harvest under glasshouse conditions in Korea. Time and degree-days above 5°C (DD5) for egg mass formation after April were about 24.5 days and 500 DD5. Higher mean soil temperature shortened the days required for egg mass formation. A threshold temperature for degree-days accumulation of 12.2°C was selected on the basis of lowest coefficient of variation among data sets of time to egg mass formation. We propose the use of DD12.2 for predicting the time to egg mass formation of M. arenaria under these glasshouse conditions.
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Guan, Wenjing, Xin Zhao, Donald W. Dickson, Maria L. Mendes, and Judy Thies. "Root-knot Nematode Resistance, Yield, and Fruit Quality of Specialty Melons Grafted onto Cucumis metulifer." HortScience 49, no. 8 (August 2014): 1046–51. http://dx.doi.org/10.21273/hortsci.49.8.1046.
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Interest in specialty melons (Cucumis melo) with distinctive fruit characteristics has grown in the United States in recent years. However, disease management remains a major challenge in specialty melon production. In this study, grafting experiments were conducted to determine the effectiveness of using Cucumis metulifer, a species known for its genetic resistance to root-knot nematodes (RKNs; Meloidogyne spp.), as a potential rootstock for managing RKNs in susceptible specialty melon cultivars. In the greenhouse experiment, honeydew melon ‘Honey Yellow’ was grafted onto C. metulifer and inoculated with M. incognita race 1. The grafted plants exhibited significantly lower gall and egg mass indices and fewer eggs compared with non- and self-grafted ‘Honey Yellow’. Cucumis metulifer was further tested as a rootstock in conventional and organic field trials using honeydew melon ‘Honey Yellow’ and galia melon ‘Arava’ as scions. ‘Honey Yellow’ and ‘Arava’ grafted onto C. metulifer exhibited significantly lower galling and reduced RKN population densities in the organic field; however, total and marketable fruit yields were not significantly different from non- and self-grafted plants. Although the improvement of RKN resistance did not translate into yield enhancements, incorporating grafted specialty melons with C. metulifer rootstock into double-cropping systems with RKN-susceptible vegetables may benefit the overall crop production by reducing RKN population densities in the soil. At the conventional field site, which was not infested with RKNs, ‘Honey Yellow’ grafted onto C. metulifer rootstock had a significantly lower total fruit yield than non-grafted ‘Honey Yellow’ plants; however, fruit yields were similar for ‘Arava’ grafted onto C. metulifer rootstock and non-grafted ‘Arava’ plants. Although no significant impacts on the fruit quality attributes of ‘Honey Yellow’ were observed, grafting onto C. metulifer decreased the flesh firmness of ‘Arava’ in both field trials and resulted in a reduction in total soluble solids content under conventional production. In summary, grafting RKN-susceptible melons onto C. metulifer rootstock offers promise for growing these specialty melons; however, more studies are needed to elucidate the scion–rootstock interaction effect on fruit yield and quality.
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Unluoglu, Saime, Umit Bayol, Nilay Korkmaz, Bekir Ozenen, Fuat Ipekci, and Emel Ebru Pala. "Perivascular Epithelioid Cell Tumor of the Ileum Presenting as Diverticulitis." Case Reports in Pathology 2012 (2012): 1–4. http://dx.doi.org/10.1155/2012/476941.
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Perivascular epithelioid cell tumors (PEComas) are a group of rare mesenchymal neoplasms. Gastrointestinal PEComas are exceptionally rare, there being only a few case reports in the literature involving the colon and small intestine. Nearly all PEComas show immunoreactivity for both melanocytic (HMB45 and/or Melan-A) and smooth muscle (actin and/or desmin) markers. A 36-year-old male was admitted to the hospital with acut- abdomen. At laparatomy, a nodular mass protruding from the ileum which clinically simulated a diverticulitis was noticed. Gross examination of the specimen revealed a2×1,5×1 cm secondarily ulcerated, solid, nodular, gray white tumor mass in the ileal wall. Histologically, tumor cells were composed of nests of round-polygonal epithelioid cells with abundant clear to slightly eosinophilic granular cytoplasm and round vesicular nuclei. The nests were separated by thin fibrovascular septa. Minimal necrosis and low mitotic activity were noticed in the tumor. Immunohistochemically, tumor cells were positive for SMA, HMB45, and Melan-A and negative for CD10, RCC, CD45, CD117, CD34, EMA, and Desmin. Diagnosis was PEComa of the ileum. We report the case of ileal PEComa to remind the unusual presentation (diverticulitis) of these tumors, besides rarity and diagnostic difficulties.
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Edan, Yael, and James E. Simon. "Spatial and Temporal Distribution of Ripe Muskmelon Fruit." HortScience 32, no. 7 (December 1997): 1178–81. http://dx.doi.org/10.21273/hortsci.32.7.1178.
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The spatial distribution patterns of five melon cultivars (Cucumis melo L. var. reticulatus) were evaluated by measuring XY coordinates of ripe fruit locations in the field. Fruit ripeness distribution over time was also evaluated for three cultivars by measuring the number of ripe fruit, fruit mass, and location over time. Spatial distribution curves for distances between fruit clusters and individual fruit from cluster centroids varied between clusters and were derived for each cultivar from the best fit curves based on chi-square analysis from the two-dimensional spatial fruit distribution. These equations can be used for predicting actual fruit locations in the field. Ripeness distribution patterns indicated that, while the exact duration of the effective harvesting period is cultivar-dependent, the ripeness trend for each of the cultivars was similar. Spatial distribution patterns vary among melon cultivars and must be recognized in the design of automated harvesting systems.
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Gouttebroze, Jean-Guy. "Melkin et les treize boules de cristal." Journal of the International Arthurian Society 6, no. 1 (September 25, 2018): 70–94. http://dx.doi.org/10.1515/jias-2018-0005.
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Résumé Dans la Cronica sive Antiquitates Glastoniensis Ecclesiae de Jean de Glastonbury, telle que l’a publiée James P. Carley, apparaît en deux endroits un texte énigmatique qu’un devin, Melkin, qui fuit ante Merlinum, est censé avoir émis. Ce texte prophétique a sollicité la curiosité de plusieurs chercheurs, mais il reste de nombreuses zones d’ombre. Nous avons voulu, à notre tour, en donner une interprétation. Elle repose essentiellement sur la mise à jour d’un parallèle implicite, inhérent au texte, entre Glastonbury et Rome. Parallèle initié par la présence, à époque païenne, sur le site de l’abbaye, de devins qui pratiquent la cristallomancie et s’ouvrant, à la suite de la christianisation du lieu et de la découverte du tombeau de Joseph d’Arimathie, sur une perspective eschatologique qui concerne l’avenir du sanctuaire. Quand ce tombeau sera ouvert, une période de prospérité et de gràce, prédit Melkin sous une forme symbolique, s’étendra sur lui.
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Akiner, Muhammed Ernur, and Atilla Akkoyunlu. "Statistical approach for the estimation of watershed scale nitrate export: a case study from Melen watershed of Turkey." Archives of Environmental Protection 42, no. 2 (June 1, 2016): 44–51. http://dx.doi.org/10.1515/aep-2016-0019.
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Abstract Nutrient pollution such as nitrate (NO3−) can cause water quality degradation in rivers used as a source of drinking water. This situation raises the question of how the nutrients have moved depending on many factors such as land use and anthropogenic sources. Researchers developed several nutrient export coefficient models depending on the aforementioned factors. To this purpose, statistical data including a number of factors such as historical water quality and land use data for the Melen Watershed were used. Nitrate export coefficients are estimates of the total load or mass of nitrate (NO3−) exported from a watershed standardized to unit area and unit time (e.g. kg/km2/day). In this study, nitrate export coefficients for the Melen Watershed were determined using the model that covers the Frequentist and Bayesian approaches. River retention coefficient was determined and introduced into the model as an important variable.
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Shattuck-Eidens, D. M., R. N. Bell, S. L. Neuhausen, and T. Helentjaris. "DNA sequence variation within maize and melon: observations from polymerase chain reaction amplification and direct sequencing." Genetics 126, no. 1 (September 1, 1990): 207–17. http://dx.doi.org/10.1093/genetics/126.1.207.
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Abstract While compiling genetic linkage maps in several plant species based upon restriction fragment length polymorphisms (RFLPs), it was noted that the incidence of polymorphism differs among species. The basis of this disparity was investigated in this study by examining the nucleotide sequence at homologous loci among distinct cultivars within two species which exhibit considerably different levels of RFLPs. Using the polymerase chain reaction, homologous regions from different cultivars were first amplified and the nucleotide sequence of the products were determined. Four genomic regions of seven maize cultivars and three genomic regions of eight melon cultivars were examined to compare the respective levels of sequence variation between the two species. Levels of variation for both base substitutions and insertions/deletions varied widely among the maize sequences and between maize and melon for base substitutions. Estimates of theta (a measure of polymorphism) ranged from 0 to 0.002 in melon and from 0.006 to 0.040 for base substitutions and from 0.002 to 0.023 for insertions/deletions in maize. Critical value tests and chi-squared tests suggested that in maize the underlying processes generating and maintaining neutral mutations differ among the regions. The results not only suggest that several mechanisms are necessary to explain the variation seen in these two species, but also point to some basic dissimilarities in the organization and maintenance of the genomes of different plant species.
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VARGAS, PABLO FORLAN, ATALITA FRANCIS CARDOSO, HAMILTON CÉSAR DE OLIVIERA CHARLO, RENATA CASTOLDI, and LEILA TREVISAN BRAZ. "REUSE OF SUBSTRATE IN THE PROTECTED CULTIVATION OF MUSKMELON." Revista Caatinga 34, no. 3 (September 2021): 599–604. http://dx.doi.org/10.1590/1983-21252021v34n311rc.
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ABSTRACT Melon is a vegetable of great socioeconomic importance, and its cultivation is carried out under different production systems. The protected cultivation of melon can be carried out in coconut shell fiber, which is a substrate widely used in olericulture, but little information is available regarding its continuous use in more than one cultivation cycle. Therefore, this study aimed to evaluate the performance of muskmelon hybrids as a function of the reuse of coconut shell fiber with fertigation in a protected environment. The experiment was carried out in a greenhouse from March to July 2008 and designed in randomized blocks in a 2×3 factorial arrangement, with four replications. The factors consisted of two hybrids (‘Bonus 2’ and ‘Fantasy’) and three types of substrate (S1: new coconut shell fiber; S2: coconut shell fiber reused once in sweet pepper cultivation; and S3: coconut shell fiber reused twice, i.e., first in sweet pepper cultivation and then in melon cultivation). Transverse and longitudinal fruit diameter, fruit shape index, transverse and longitudinal locule diameter, locule shape index, peduncle insertion diameter, mesocarp thickness, firmness, skin netting, fresh mass, soluble solids, titratable acidity, pH, and yield were evaluated after harvest. Reusing twice the coconut shell fiber as a substrate did not affect the agronomic and physicochemical characteristics of the hybrids Bonus 2 and Fantasy.
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Zhang, Xudong, Yuzhuo Bai, Yun Wang, Chunlan Wang, Jianhua Fu, Longlan Gao, Yu Liu, et al. "Anticancer Properties of Different Solvent Extracts of Cucumis melo L. Seeds and Whole Fruit and Their Metabolite Profiling Using HPLC and GC-MS." BioMed Research International 2020 (February 26, 2020): 1–9. http://dx.doi.org/10.1155/2020/5282949.
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Honeydew melon (Cucumis melo L.) is an oval-shaped delicious fruit of one cultivar group of the muskmelon with immense nutritional importance and is extensively consumed by many tropical countries. The effect of various organic solvents on the recovery of phytochemicals from honeydew melon plant fruits and seeds was assessed. Further, High-Performance Liquid Chromatography (HPLC) was used to examine and assess the contents of phenolic acid (gallic acid) and flavonoid (rutin) compounds. The use of gas chromatography–mass spectrometry (GC-MS) analysis explained the presence of volatile phytocompounds in the extracts. The use of organic solvents had a substantial impact on the total dry weight and extract yield. In general, the solvent-extracted constituents remained in the order of methanol>chloroform>distilled water for both honeydew melon seeds and whole fruit. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) was used to assess the cytotoxicity effect against PC3, HCT116, HeLa, and Jurkat cell lines. The chloroform extract exhibited a good cytotoxic activity against all cell lines as compared to other solvent extracts. HPLC analysis revealed the occurrence of gallic acid content of 0.102±0.23 mg/10 mg of dry whole fruit extract, while 10 mg of dry seed extract contained only 0.022±0.12 mg of gallic acid content. Likewise, rutin content was observed to be 0.224±0.31 mg and 0.1916±0.82 mg/10 mg of dry whole fruit and seed extract, respectively. Further, GC-MS analysis revealed the presence of a total of 37 compounds in chloroform extract of whole fruit, while only 14 compounds were found in seed extract. Nevertheless, more examinations are needed to identify and characterize other metabolites from honeydew melon and evaluate their pharmacological importance.
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Ekinci, Mustafa Serhat, and Metin Gürü. "Extraction of phytosterols from melon (Cucumis melo) seeds by supercritical CO2 as a clean technology." Green Processing and Synthesis 8, no. 1 (January 28, 2019): 677–82. http://dx.doi.org/10.1515/gps-2019-0038.
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Abstract Extraction with supercritical carbon dioxide (SC-CO2) which is known as a clean technology was carried out to extract oil from melon (Cucumis melo) seeds. SC-CO2 extraction technique does not contaminate extracts. SC-CO2 is not a toxic and a flammable solvent. Phytosterols, natural and bioactive compounds, which is known to provide protection against various chronic diseases were examined in the seed oil by using gas chromatography – mass spectrometry (GC-MS). Stigmasterol and β-sitosterol were detected in the melon seed oil. SC-CO2 extractions were performed in a range of 30-55°C, 150-240 bar, 7-15 g CO2/min, 0.4-1.7 mm (mean particle size of the seeds) and 1-4 h. The optimal quantities of extracted oil, β-sitosterol and stigmasterol were 36.8 g/100 g seed, 304 mg/ kg seed and 121 mg/ kg seed, respectively, at 33°C, 200 bar, 11 g CO2/min, 0.4 mm and 3 h.
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Belisario, A., E. Forti, L. Corazza, and H. A. van Kesteren. "First Report of Myrothecium verrucaria from Muskmelon Seeds." Plant Disease 83, no. 6 (June 1999): 589. http://dx.doi.org/10.1094/pdis.1999.83.6.589c.
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Myrothecium verrucaria (Albertini & Schwein.) Ditmar:Fr. was isolated from muskmelon (Cucumis melo L.) seeds of Charentais-T, a culti var used as a differential host with no resistance to Fusarium oxysporum f. sp. melonis races. A white floccose mycelial mat developed on melon seeds during incubation on moist blotters. Mycelia were mass transferred from melon seeds onto potato dextrose agar (PDA) medium. At 25°C in the dark, a mycelial mat with characteristic annelations of greenish-black sporodochia, without setae, was produced. Conidia (2 to 3 × 6 to 10 μm) were lemon shaped, with a typical conical mucous appendage at one end, which was visible with Loeffer's flagella stain (1). Based on these characteristics, the fungus was identified as M. verrucaria. For pathogenicity studies, surface sterilized seeds of C. melo cv. Charentais-T were coated with M. verrucaria conidia by gently rubbing the seeds on sporodochia produced on 15-day-old cultures on PDA. Once coated, seeds were plated onto water agar and on sterile moist blotters in 9-cm-diameter petri dishes. Plates were incubated at 28°C in the dark. Five seeds per plate and three plates per experiment were used. Experiments were replicated three times. Control seeds were plated without coating. After 7 days, on water agar, 90% of melon seeds failed to germinate while the remaining 10% produced young seedlings that died from root rot and necrotic lesions on the hypocotyl. After 12 days on moist blotters, 100% of the melon seedlings died, showing necrotic lesions on the hypocotyl and on the main root. The pathogen was reisolated from symptomatic melon seedlings. All control seeds germinated and grew into healthy seedlings. M. verrucaria, known to be a seed-borne pathogen, has been isolated from soil and plants worldwide (2). This is the first report of M. verrucaria pathogen on muskmelon. This fungus is not a serious concern when seeds are dressed with fungicides. References: (1) K. V. A. Thompson and S. C. Simmens. Nature. 193:196, 1962. (2) S.-M. Yang and S. C. Jong. Plant Dis. 79:994, 1995.
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Lemos, Fernanda, Dalton Dittz, Verlane Santos, Simone Pires, Hélida de Andrade, Carlos Salas, and Miriam Lopes. "Cysteine Proteases from V. cundinamarcensis (C. candamarcensis) Inhibit Melanoma Metastasis and Modulate Expression of Proteins Related to Proliferation, Migration and Differentiation." International Journal of Molecular Sciences 19, no. 10 (September 20, 2018): 2846. http://dx.doi.org/10.3390/ijms19102846.
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Previous studies showed that P1G10, a proteolytic fraction from Vasconcellea cundinamarcensis latex, reduced the tumor mass in animals bearing melanoma, increased in vitro DNA fragmentation and decreased cell adhesion. Here, we present some molecular and cellular events related to the antimetastatic effect induced by the CMS-2 fraction derived from P1G10 in metastatic melanoma B16-F10 and melanocyte Melan-a. Using difference gel electrophoresis and mass spectrometry, we identified four proteins overexpressed in tumor cells, all of them related to proliferation, survival, migration and cell invasion, that had their expression normalized upon treatment with CMS-2: nucleophosmin 1, heat shock protein 65, calcyclin binding protein and eukaryotic translation initiation factor 4H. In addition, some antioxidant and glycolytic enzymes show increased expression after exposure to CMS-2, along with an induction of melanogenesis (differentiation marker). The down regulation of cofilin 1, a protein involved in cell motility, may explain the inhibition of cell migration and dendritic-like outgrowth in B16-F10 and Melan-a, observed after CMS-2 treatment. Taken together, it is argued that CMS-2 modulates the expression of proteins related to metastatic development, driving the cell to a more differentiated-like state. These effects support the CMS-2 antimetastatic activity and place this fraction in the category of anticancer agent.
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Rico, Xiana, Beatriz Gullón, and Remedios Yáñez. "Environmentally Friendly Hydrothermal Processing of Melon by-Products for the Recovery of Bioactive Pectic-Oligosaccharides." Foods 9, no. 11 (November 20, 2020): 1702. http://dx.doi.org/10.3390/foods9111702.
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Melon by-products, that currently lack high value-added applications, could be a sustainable source of bioactive compounds such as polysaccharides and antioxidants. In this work, melon peels were extracted with water to remove free sugars, and the water-insoluble solids (WISs) were subjected to hydrothermal processing. The effect of temperature on the composition of the obtained liquors and their total phenolic content was evaluated. The selected liquors were also characterized by matrix assisted laser desorption/ionization-time of flight mass spectroscopy (MALDI-TOF MS), fourier transform infrared spectroscopy (FTIR) and high performance anion exchange chromatography with pulsed amperometric detection (HPAEC–PAD), and its phenolic compounds were identified and quantified by high-performance liquid chromatography-diode array detector-tandem mass spectrometry (HPLC–DAD–MS/MS). In addition, the spent solids from the hydrothermal treatment were characterized and their potential use was assessed. At the optimal conditions of 140 °C (severity 2.03), the total oligosaccharide yield accounted for 15.24 g/100 g WIS, of which 10.07 g/100 g WIS were oligogalacturonides. The structural characterization confirmed the presence of partially methyl esterified oligogalacturonides with a wide range of polymerization degrees. After precipitation, 16.59 g/100 g WIS of pectin were recovered, with a galacturonic acid content of 55.41% and high linearity.
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Esteras, Cristina, Jose Luis Rambla, Gerardo Sánchez, Antonio Granell, and María Belén Picó. "Melon Genetic Resources Characterization for Rind Volatile Profile." Agronomy 10, no. 10 (October 6, 2020): 1512. http://dx.doi.org/10.3390/agronomy10101512.
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A melon core collection was analyzed for rind volatile compounds as, despite the fact that they are scarcely studied, these compounds play an important role in consumer preferences. Gas chromatography coupled to mass spectrometry allowed the detection of 171 volatiles. The high volatile diversity found was analyzed by Hierarchical Cluster Analysis (HCA), giving rise to two major clusters of accessions. The first cluster included climacteric and aromatic types such as Cantalupensis, Ameri, Dudaim and Momordica, rich in esters; the second one mainly included non-climacteric non-aromatic types such as Inodorus, Flexuosus, Acidulus, Conomon and wild Agrestis, with low volatiles content, specifically affecting esters. Many interesting accessions were identified, with different combinations of aroma profiles for rind and flesh, such as Spanish Inodorus landraces with low aroma flesh but rind levels of esters similar to those in climacteric Cantalupensis, exotic accessions sharing high contents of specific compounds responsible for the unique aroma of Dudaim melons or wild Agrestis with unexpected high content of some esters. Sesquiterpenes were present in rinds of some Asian Ameri and Momordica landraces, and discriminate groups of cultivars (sesquiterpene-rich/-poor) within each of the two most commercial melon horticultural groups (Cantalupensis and Inodorus), suggesting that the Asian germplasm is in the origin of specific current varieties or that this feature has been introgressed more recently from Asian sources. This rind characterization will encourage future efforts for breeding melon quality as many of the characterized landraces and wild accessions have been underexploited.
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Carrier, David R., Stephen M. Deban, and Jason Otterstrom. "The face that sank the Essex: potential function of the spermaceti organ in aggression." Journal of Experimental Biology 205, no. 12 (June 15, 2002): 1755–63. http://dx.doi.org/10.1242/jeb.205.12.1755.
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SUMMARY `Forehead to forehead I meet thee, this third time, Moby Dick!' [Ahab (Melville, 1851)] Herman Melville's fictional portrayal of the sinking of the Pequodwas inspired by instances in which large sperm whales sank whaling ships by ramming the ships with their heads. Observations of aggression in species of the four major clades of cetacean and the artiodactyl outgroup suggest that head-butting during male—male aggression is a basal behavior for cetaceans. We hypothesize that the ability of sperm whales to destroy stout wooden ships, 3-5 times their body mass, is a product of specialization for male—male aggression. Specifically, we suggest that the greatly enlarged and derived melon of sperm whales, the spermaceti organ, evolved as a battering ram to injure an opponent. To address this hypothesis, we examined the correlation between relative melon size and the level of sexual dimorphism in body size among cetaceans. We also modeled impacts between two equal-sized sperm whales to determine whether it is physically possible for the spermaceti organ to function as an effective battering ram. We found (i) that the evolution of relative melon size in cetaceans is positively correlated with the evolution of sexual dimorphism in body size and (ii) that the spermaceti organ of a charging sperm whale has enough momentum to seriously injure an opponent. These observations are consistent with the hypothesis that the spermaceti organ has evolved to be a weapon used in male—male aggression.