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Journal articles on the topic 'Downy mildew diseases. Cabbage'

Author: Grafiati

Published: 4 June 2021

Last updated: 13 February 2022

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1

Vuković, Slavica, Dragana Šunjka, Antonije Žunić, and Dragana Bošković. "Plant protection products in root vegetable." Biljni lekar 48, no. 6 (2020): 654–68. http://dx.doi.org/10.5937/biljlek2006654v.

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The production, value and quality of root vegetables are endangered by numerous phytopathogenic fungi and pests. Numerous causal agents cause economically significant diseases of root vegetables like carrot leaf blight and black rot of carrots (Alternaria dauci and Alternaria radicina), powdery mildew of carrot and sugar beet (Erysiphe heraclei and Erysiphe betae), Cercospora leaf spot of carrot (Cercospora carotae), black blight (Septoria apiicola), leaf bright parsley (Septo-ria petroselini), downy mildew (Peronospora farinosa f.sp. betae and P. farinosa f.sp. spinaciae), rust (Puccinia spp.

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Yu, Ling Chun, and Nai Qin Zhang. "A Study on Physical Technology of Induced-Resistance for Chinese Cabbages." Advanced Materials Research 159 (December 2010): 23–28. http://dx.doi.org/10.4028/www.scientific.net/amr.159.23.

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When magnetic fields with the magnetic induction intensity of 0.4T, 0.8T, 1.2T, 1.6T and 2.0T are used to deal with germinating cabbage seeds for 5min, 10min, 15min and 20min separately, the results show that the appropriate combination of field strength and time can activate peroxidase (POD) and polyphenol oxidase(PPO) apparently, and decrease the content of MDA at the same time. Through the downy mildew inoculation tests, the magnetic field effects on the induced-resistance of Chinese cabbage are significantly lower than control, indicating that magnetic field treatment improve the Chinese c

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3

Zakari, S. M., A. A. Aliko, H. Haruna, and A. Muazu. "Evaluation of qualitative phytochemicals and antifungal activity of aqueous leaf extract of Senna tora on downy mildew of cabbage." Bayero Journal of Pure and Applied Sciences 11, no. 1 (2018): 15–19. http://dx.doi.org/10.4314/bajopas.v11i1.3.

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This study was embarked upon to evaluate the efficacy of aqueous extracts of Senna tora leaf against Perenospora parasitica, causing downy mildew on cabbage. Phytochemical analysis of the leaf extracts revealed the presence of some secondary metabolites (Tannins, Saponins, Flavonoid, Glycosides, Alkaloids, Phenolic compounds and Carbohydrates) which have been reported to have antimicrobial effects. Assays were performed using extract concentrations of 1000, 500, 250, 125 mg/ml by agar well diffusion technique. Results obtained, revealed a significant difference in diameter of mycelial zone of

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4

Liu, Yan, Dalong Li, Na Yang, et al. "Genome-Wide Identification and Analysis of CC-NBS-LRR Family in Response to Downy Mildew and Black Rot in Chinese Cabbage." International Journal of Molecular Sciences 22, no. 8 (2021): 4266. http://dx.doi.org/10.3390/ijms22084266.

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The nucleotide-binding site–leucine-rich repeat (NBS–LRR) gene family is the largest group of plant disease resistance (R) genes widespread in response to viruses, bacteria, and fungi usually involved in effector triggered immunity (ETI). Forty members of the Chinese cabbage CC type NBS–LRR family were investigated in this study. Gene and protein characteristics, such as distributed locations on chromosomes and gene structures, were explored through comprehensive analysis. CC–NBS–LRR proteins were classified according to their conserved domains, and the phylogenetic relationships of CC–NBS–LRR

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MIRZAHOSEIN-TABRIZI, Maryam. "Identification of Downy Mildew Resistance Loci in Sunflower Germplasm." Notulae Scientia Biologicae 9, no. 4 (2017): 515–19. http://dx.doi.org/10.15835/nsb9410133.

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Downy mildew caused by Plasmopara halstedii is one of the most economically important fungal diseases on sunflower (Helianthus annuus). To date, several downy mildew resistance genes called Pl genes have been reported on sunflower genetic map. Previous findings have confirmed that Iranian sunflower germplasms are harbouring Pl resistance genes that may be used to control downy mildew. In the current study, there were investigated the Pl5 and Pl16 downy mildew resistance genes in 51 inbred lines of Iranian sunflower, using PCR-based method. Fifteen differential lines carrying Pl5 and Pl16 downy

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Gent, David H., Mark E. Nelson, Gary G. Grove, Walter F. Mahaffee, William W. Turechek, and Joanna L. Woods. "Association of Spring Pruning Practices with Severity of Powdery Mildew and Downy Mildew on Hop." Plant Disease 96, no. 9 (2012): 1343–51. http://dx.doi.org/10.1094/pdis-01-12-0084-re.

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Downy mildew (caused by Pseudoperonospora humuli) and powdery mildew (caused by Podosphaera macularis) are important diseases of hop in the Pacific Northwest United States, and cultural practices may affect the severity of both diseases. The association of spring pruning quality and timing with severity of downy mildew and powdery mildew was assessed through analysis of survey data collected from commercial hop yards in Oregon and Washington. Among 149 hop yards surveyed, the most common pruning method was chemical desiccation (48% of yards), mechanical pruning (23%), or a combination of these

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7

Subbarao, K. V., J. C. Hubbard, and K. F. Schulbach. "Comparison of Lettuce Diseases and Yield Under Subsurface Drip and Furrow Irrigation." Phytopathology® 87, no. 8 (1997): 877–83. http://dx.doi.org/10.1094/phyto.1997.87.8.877.

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Subsurface drip and furrow irrigation were compared on lettuce (Lactuca sativa) cvs. Salinas and Misty Day for yield and incidence and severity of three important diseases of lettuce in the Salinas Valley, CA. Experiments were conducted between 1993 and 1995 during the spring and fall seasons. The diseases examined included lettuce drop (Sclerotinia minor), downy mildew (Bremia lactucae), and corky root (Rhizomonas suberifaciens). Replicated plots of subsurface drip and furrow irrigation were arranged in a randomized complete-block design. All plants were inoculated with S. minor at the initia

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8

Álvarez-Romero, Pablo Israel, Virginia Mariño-Frías, Carlos Francisco Carpio-Coba, and Ana Francisca Ferreira-Ferreira. "Elaboração e validação de diagramas de área padrão (DAP) para avaliação da severidade do míldio (Peronospora variabilis Gäum) em quinoa (Chenopodium quinoa Willd)." Revista Agraria Academica 4, no. 4 (2021): 43–54. http://dx.doi.org/10.32406/v4n4/2021/43-54/agrariacad.

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The quinoa downy mildew is one of the major diseases affecting quinoa in Ecuador. Considering the lack of standardized methods to quantify this disease on leaves, the aim of this study was to develop a standard area diagram to quantify the severity of the quinoa downy mildew. To standardize the assessment, we developed two sets of standard area diagrams. To validate the diagram, twelve raters estimated the severity of 50 scanned leaf images at different severity levels. The proposed diagram with linear increments provided good levels of accuracy and precision, constituting thus a useful tool i

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9

Shidfar, Mina, Murat Akkurt, Arif Atak, Ali Ergül, and Gökhan Söylemezoğlu. "EVALUATION OF GRAPEVINE RESISTANCE TO DOWNY AND POWDERY MILDEW IN ‘REGENT’ × ‘BOĞAZKERE’ HYBRID POPULATION SEGREGATING FOR RESISTANCE GENES." Acta Scientiarum Polonorum Hortorum Cultus 18, no. 1 (2019): 181–88. http://dx.doi.org/10.24326/asphc.2019.1.18.

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Downy (Plasmopara viticola) and powdery mildew (Erysipha necator) is known as one of the most mischievous diseases for viticulture in Turkey as well as in the world. Therefore breeding studies play an important role for development of new cultivars resistant against fungal diseases. The aim of this research was to develop new F1 population and evaluate the resistance of hybrids to powdery and downy mildew via marker assisted selection (MAS). Resistant ‘Regent’ and susceptible ‘Boğazkere’ varieties were used to obtain hybrid population. A total of 6 markers belonging to 3 genomic regions were u

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10

Purayannur, Savithri, Timothy D. Miles, David H. Gent, Stacey Pigg, and Lina M. Quesada-Ocampo. "Hop Downy Mildew Caused by Pseudoperonospora humuli: A Diagnostic Guide." Plant Health Progress 21, no. 3 (2020): 173–79. http://dx.doi.org/10.1094/php-10-19-0072-dg.

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Downy mildew, caused by Pseudoperonospora humuli, is one of the most destructive diseases of hop. The purpose of this article is to provide an overview of the pathogen, the host range and geographical distribution, and the means to diagnose the disease. It is important to be able to diagnose downy mildew and distinguish it from other diseases for the timely application of suitable management practices. The procedures for laboratory propagation and maintenance of isolates are also presented.

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11

Hamada, Emília, Raquel Ghini, Paulo Rossi, Mário José Pedro Júnior, and Jeferson Lobato Fernandes. "Climatic risk of grape downy mildew (Plasmopara viticola) for the State of São Paulo, Brazil." Scientia Agricola 65, spe (2008): 60–64. http://dx.doi.org/10.1590/s0103-90162008000700010.

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Viticulture in Brazil has been growing in importance in recent years. In the State of São Paulo, a significant percentage of the production is basically destined to in natura consumption and, more recently, much effort has been made by institutions to revitalize the viticulture in the State. Among fungal diseases, the downy mildew (Plasmopara viticola) is one of the main diseases affecting this crop in Brazil, with extreme damage effects on its production. The objective of this study was to estimate the incidence of the downy mildew on grape under the climatic conditions of the State of São Pa

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12

Thomas, Claude E., and E. L. Jourdain. "Resistance to Race 2 of Peronospora parasitica in U.S. Plant Introductions of Brassica oleracea var. capitata." HortScience 27, no. 10 (1992): 1120–22. http://dx.doi.org/10.21273/hortsci.27.10.1120.

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Evaluations for resistance against race 2 of downy mildew, incited by Peronosporu parasitica Pers. ex Fr., were conducted on 325 U.S. Plant Introductions (PI) classified as Brassicu oleracea var. capitata L. (cabbage). A disease index (DI) was calculated for each entry. In 77 of the tested PIs, from 2% to 100% of the plants had reaction phenotypes ≥ 3. The DIs for 24 PIs were significantly lower than the DI for the most resistant cabbage control, `Headstart' (DI = 5.9). Eight of these PIs were highly resistant, because all plants had a reaction phenotype ≥ 3. However, most of these eight are a

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13

Xu, Hui, Fang Lv, and Xian Mei Yue. "Discussion on Sunflower Leaf Disease Diagnosis Based on Imaging Identification." Applied Mechanics and Materials 577 (July 2014): 1202–6. http://dx.doi.org/10.4028/www.scientific.net/amm.577.1202.

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This paper focused on three common diseases, respectively, bacterial leaf spot, black spot and downy mildew as research targets, developed and designed a system to diagnose leaf diseases of sunflowers based on image identification. The system used MATLAB as platform and developed the system by utilizing GUI tool kit. Passing several tests, the system was believed to be able to identify three types of sunflower diseases effectively, respectively, bacterial leaf spot, black spot and downy mildew. The results basically met the requirements set before the design of this system.

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14

Stein, A. "A Geostatistical Analysis of the Spatio-Temporal Development of Downy Mildew Epidemics in Cabbage." Phytopathology 84, no. 10 (1994): 1227. http://dx.doi.org/10.1094/phyto-84-1227.

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15

Brophy, T. F., and M. D. Laing. "Screening of fungicides for the control of downy mildew on container-grown cabbage seedlings." Crop Protection 11, no. 2 (1992): 160–64. http://dx.doi.org/10.1016/0261-2194(92)90100-j.

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16

Sharma, Rajan, V. P. Rao, H. D. Upadhyaya, V. Gopal Reddy, and R. P. Thakur. "Resistance to Grain Mold and Downy Mildew in a Mini-Core Collection of Sorghum Germplasm." Plant Disease 94, no. 4 (2010): 439–44. http://dx.doi.org/10.1094/pdis-94-4-0439.

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Grain mold and downy mildew are important biotic constraints to grain sorghum (Sorghum bicolor) production worldwide and are best managed through host plant resistance. A sorghum mini-core collection composed of 242 germplasm accessions developed from a core collection of 2,246 landrace accessions from 58 countries was evaluated to identify sources of grain mold and downy mildew resistance. Of the 242 accessions, 140 that flowered during the rainy season (the other 102 accessions were photoperiod sensitive) were screened for grain mold resistance in a grain mold nursery under field epiphytotic

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17

Standish, Jeffrey R., Richard N. Raid, Stacey Pigg, and Lina M. Quesada-Ocampo. "A Diagnostic Guide for Basil Downy Mildew." Plant Health Progress 21, no. 2 (2020): 77–81. http://dx.doi.org/10.1094/php-09-19-0062-dg.

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Downy mildew, caused by the oomycete pathogen Peronospora belbahrii, is one of the most important diseases affecting sweet basil worldwide. Field- and greenhouse-grown basil may be affected, and crop losses are observed as the reduction of marketable leaves during both the production and postharvest handling stages. As an obligate biotroph, P. belbahrii cannot be cultured and maintained without live plant tissue, which may complicate efforts to diagnose and identify the causal agent. Thus, the goal of this diagnostic guide is to outline the appropriate methods required to identify basil downy

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18

Wyenandt, Christian A., Margaret T. McGrath, Kathryne L. Everts, Steven L. Rideout, Beth K. Gugino, and Nathan Kleczewski. "Fungicide Resistance Management Guidelines for Cucurbit Downy and Powdery Mildew Control in the Mid-Atlantic and Northeast Regions of the United States in 2018." Plant Health Progress 19, no. 1 (2018): 34–36. http://dx.doi.org/10.1094/php-12-17-0077-br.

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In the mid-Atlantic and Northeast regions of the United States, more than 163,000 acres of fresh-market vegetable crops are grown annually. Two important diseases of cucurbit crops across the Unites States and world are powdery mildew caused by Podosphaera xanthii (formerly Sphaerotheca fuliginea [Schlecht ex Fr.] Poll.) and downy mildew caused by Pseudoperonospora cubensis. Resistance to a number of high-risk fungicides has been detected in both pathogens. To help cucurbit growers in the mid-Atlantic and Northeast regions properly manage both diseases, an updated fungicide resistance manageme

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19

Buffara, Cláudia Regina Scapin, Francislene Angelotti, Rafael Augusto Vieira, Amauri Bogo, Dauri José Tessmann, and Betina Perreira de Bem. "Elaboration and validation of a diagrammatic scale to assess downy mildew severity in grapevine." Ciência Rural 44, no. 8 (2014): 1384–91. http://dx.doi.org/10.1590/0103-8478cr20131548.

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The downy mildew, caused by Plasmopora viticola, is one of the most important grapevine (Vitis vinifera) diseases in Southern Brazil, causing defoliation and economic losses. The evaluation of disease severity is an important decision for adoption of strategies and tactics for disease control. Therefore, the objective of this work was to elaborate and to validate a diagrammatic scale to assess downy mildew severity in grapevine, respecting the limitations of visual acuity. The diagrammatic scale with seven levels of disease severity of 1, 3, 6, 12, 25, 50 and 75% was developed in two versions

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20

Sireesha, Y., and R. Velazhahan. "Biological control of downy mildew of maize caused by Peronosclerospora sorghi under environmentally controlled conditions." Journal of Applied and Natural Science 8, no. 1 (2016): 279–83. http://dx.doi.org/10.31018/jans.v8i1.786.

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Downy mildew disease, caused by Peronosclerospora sorghi, is one of the most serious diseases of maize. The disease is currently managed by seed treatment with metalaxyl fungicides. However, problems regarding environmental pollution resulting from the use of fungicides and development of fungicide resistance within populations of P. sorghi are of increasing concern. Assuming that biological control by means of using antagonistic microorganisms may be an alternative for the management of this disease, the efficacy of biocontrol agents viz., Bacillus subtilis G1, Bacillus amyloliquefaciens B2,

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21

SATOU, Mamoru, and Fumiyoshi FUKUMOTO. "The Host Range of Downy Mildew, Peronospora parasitica, from Brassica oleracea, Cabbage and Broccoli Crops." Japanese Journal of Phytopathology 62, no. 4 (1996): 393–96. http://dx.doi.org/10.3186/jjphytopath.62.393.

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22

Damiri, N., Mulawarman, A. Umayah, S. E. Agustin, and M. Rahmiyah. "Effect ofPseudomonas sppon infection ofPeronosporaparasitica(Pers. Fr), the pathogen of downy mildew on Chinese cabbage." IOP Conference Series: Earth and Environmental Science 102 (January 2018): 012065. http://dx.doi.org/10.1088/1755-1315/102/1/012065.

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23

Bahcevandziev, Kiril, Maria do Céu Silva, and António A. Monteiro. "Histological characterization of downy mildew (Hyaloperonospora brassicae) resistance in Portuguese cabbage (Brassica oleracea var. tronchuda)." European Journal of Plant Pathology 141, no. 1 (2014): 199–207. http://dx.doi.org/10.1007/s10658-014-0522-6.

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24

Borovskaya, I., and V. Petrenkova. "Zonal pathogen complex of sunflower in the left bank Forest-Steppe of Ukraine." Agricultural Science and Practice 5, no. 1 (2018): 67–72. http://dx.doi.org/10.15407/agrisp5.01.067.

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Aim. To determine a set of sunfl ower pathogens and their variability infl uenced by hydrothermal conditions of the crop growing season. Methods. Over the period of 2007–2016, due to phytosanitary monitoring of breeding crops of the scientifi c crop rotation of the Plant Production Institute named after V.Ya. Yuriev of NAAS, the prevalence degree, development intensity and variability of sunfl ower diseases in the Eastern Forest-Steppe of Ukraine were estimated. The hydrothermal coeffi cient (HTC) is presented for the sunfl ower growing season and by developmental phases of the crop. Results.

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25

Jones, David S., and Patricia S. McManus. "Susceptibility of Cold-Climate Wine Grape Cultivars to Downy Mildew, Powdery Mildew, and Black Rot." Plant Disease 101, no. 7 (2017): 1077–85. http://dx.doi.org/10.1094/pdis-01-17-0022-re.

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Lack of knowledge regarding the susceptibility of cold-climate hybrid wine grape cultivars may be leading to the overuse of fungicides and underutilization of plant host resistance to combat disease in the northern United States. To provide new insights on diseases of cold-climate cultivars and to update management recommendations, disease was evaluated in three vineyards containing eight cultivars that were not sprayed with fungicides in 2015 and 2016. Disease severity or incidence of downy mildew (Plasmopara viticola), powdery mildew (Erysiphe necator), and black rot (Guignardia bidwellii) w

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26

Banerjee, S., I. Bhattacharya, SA Khan, and AKS Huda. "Weather Sensitivity of Downy Mildew and Alternaria Blight of Mustard in the Gangetic West Bengal, India." Journal of Science Foundation 8, no. 1-2 (2013): 77–81. http://dx.doi.org/10.3329/jsf.v8i1-2.14629.

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The infestation of disease-pest poses a considerable threat to rapeseed-mustard production in India. Alternaria blight [A. brassicicola (Schw.)] and downy mildew [Peronospora parasitica (Pers.) Kuntze] are the major diseases in lower Gangetic plains of India. As the rate of disease increase are dependent on weather factors, weather-based forewarning system may enable to guide farmers to take protection measures timely. The paper aims at to find the effect of weather on alternaria blight and downy mildew infestations. The weather data were compared with Percent Disease Index and the prevailing

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Duvnjak, T., M. Vrataric, A. Sudaric, and J. Cosic. "Occurrence and intensity of more important fungal diseases on soybean (Glycine max (L.) Merrill) cultivars." Plant Protection Science 38, SI 2 - 6th Conf EFPP 2002 (2017): 590–92. http://dx.doi.org/10.17221/10563-pps.

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The main objective of this study was to determinate the occurrence and intensity of attack by the more important fungal diseases on soybean in Eastern Croatia. Four-year investigation (1998–2001) was undertaken on 10 domestic soybean cultivars with different level of disease resistance. The investigation was set in two planting date (optimal and delayed) on experimental fields of the Agricultural Institute Osijek. Following more important diseases were established: Downy mildew, Pod and stem blight and Stem canker. Significant differences in disease incidence were caused by genetic diversity o

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28

Wang, Min, Mark W. Farnham, and Claude E. Thomas. "Phenotypic Variation for Downy Mildew Resistance among Inbred Broccoli." HortScience 35, no. 5 (2000): 925–29. http://dx.doi.org/10.21273/hortsci.35.5.925.

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Downy mildew, caused by Peronospora parasitica (Pers. Fr.) Fr., is one of the most economically important diseases of broccoli (Brassica oleracea L. Italica group). Previous studies have shown that resistance to downy mildew in broccoli is dependent on plant age with seedling resistance being independent of mature-plant resistance. The objectives of this study were to: 1) determine if valid evaluations for downy mildew resistance can be conducted at both the cotyledon and the three to four true-leaf stages on the same plants of a given broccoli entry; 2) determine if doubled-haploid (DH) lines

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29

Pavloušek, Pavel. "Evaluation of resistance to downy mildew in grapevine genetic resources." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 54, no. 5 (2006): 99–106. http://dx.doi.org/10.11118/actaun200654050099.

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The evaluation of grapevine genetic resources is very important especially from the viewpoint of the use of some varieties within the process of grape breeding. At present, the breeding of grapevine is more and more focused upon selection of varieties showing an increased resistance to fungal diseases and, especially to downy mildew. At the Faculty of Horticulture, we have studied the resistance of 32 grapevine varieties to downy mildew resistance on leaves. This evaluation took place under field conditions in a vineyard that was not treated with pesticides within the period of 1996–2000. The

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Lamberth, Clemens. "Episodes from the Continuous Search for Solutions against Downy Mildew Diseases." CHIMIA International Journal for Chemistry 73, no. 7 (2019): 571–80. http://dx.doi.org/10.2533/chimia.2019.571.

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Lamberth, Clemens. "Episodes from the Continuous Search for Solutions against Downy Mildew Diseases." CHIMIA International Journal for Chemistry 73, no. 10 (2019): 850. http://dx.doi.org/10.2533/chimia.2019.850.

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Reuveni, Moshe. "Activity of trifloxystrobin against powdery and downy mildew diseases of grapevines." Canadian Journal of Plant Pathology 23, no. 1 (2001): 52–59. http://dx.doi.org/10.1080/07060660109506909.

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Andayani, Nining Nurini, Muzdalifah Isnaini, Muhammad Aqil, Amran Muis, Marcia Bunga Pabendon, and Muhammad Azrai. "Evaluation of Genetic Diversity of QPM, Provit-A, and Elite Maize Inbreds Resistant to Downy Mildew Disease Using Simple Sequence Repeats." Jurnal Penelitian Pertanian Tanaman Pangan 4, no. 3 (2020): 161. http://dx.doi.org/10.21082/jpptp.v4n3.2020.p161-170.

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<p>Functional maize tends to be more susceptible to major maize diseases, particularly Downy mildew. Among the functional maize are Quality Protein Maize (QPM) and Provit A maize. The presence of higher amino acid and beta carotene in functional maize might have caused these types of maize more susceptible to Downy mildew disease. The objective of the research was to identify the heterotic pairs among maize inbreds i.e. QPM, Provit A, and local maize varieties resistant to Downy mildew disease using Simple Sequence Repeats (SSR) marker. The research was conducted from April to July 2017

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Wang, Min, and Mark W. Farnham. "033 Characterization of Downy Mildew Resistance in USDA Broccoli Inbreds." HortScience 34, no. 3 (1999): 446E—447. http://dx.doi.org/10.21273/hortsci.34.3.446e.

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Downy mildew, caused by Peronospora parasitica (Pers. ex Fr.), is one of the most economically important diseases in broccoli (Brassica oleracea L. Italica group). Previous studies reported that resistance to downy mildew in broccoli depends on plant age and that seedling resistance appears to be independent of mature-plant resistance. The objectives of our studies were to evaluate resistance and susceptibility of USDA broccoli inbreds to downy mildew and to investigate the interaction between the host and pathogen at two plant stages with single or double inoculation. Multiple screening tests

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Andayani, Nining Nurini, Muzdalifah Isnaini, Muhammad Aqil, Amran Muis, Marcia Bunga Pabendon, and Muhammad Azrai. "Evaluation of Genetic Diversity of QPM, Provit-A, and Elite Maize Inbreds Resistant to Downy Mildew Disease Using Simple Sequence Repeats." Jurnal Penelitian Pertanian Tanaman Pangan 4, no. 3 (2020): 161. http://dx.doi.org/10.21082/jpptp.v4n3.2020.p161-170.

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<p>Functional maize tends to be more susceptible to major maize diseases, particularly Downy mildew. Among the functional maize are Quality Protein Maize (QPM) and Provit A maize. The presence of higher amino acid and beta carotene in functional maize might have caused these types of maize more susceptible to Downy mildew disease. The objective of the research was to identify the heterotic pairs among maize inbreds i.e. QPM, Provit A, and local maize varieties resistant to Downy mildew disease using Simple Sequence Repeats (SSR) marker. The research was conducted from April to July 2017

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36

Santos, Gil R. dos, Manoel D. de Castro Neto, Leandro N. Ramos, et al. "Reaction of melon genotypes to the gummy stem blight and the downy mildew." Horticultura Brasileira 27, no. 2 (2009): 160–65. http://dx.doi.org/10.1590/s0102-05362009000200007.

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The gummy stem blight (Didymella bryoniae) and the downy mildew (Pseudoperonospora cubensis) are two foremost melon (Cucumis melo) diseases, considering their effects on yield and fruit quality. Despite the importance of such diseases, relatively few studies have been done so far on the identification of resistance sources to D. bryoniae and P. cubensis in Brazil. This work aimed at evaluating the resistance of commercial melon genotypes to the gummy stem blight and the downy mildew. Firstly, the most aggressive and representative D. bryoniae isolate was selected. Subsequently, the resistance

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Yıldırım, Zeynep, Arif Atak, and Murat Akkurt. "Determination of downy and powdery mildew resistance of some Vitis spp." Ciência e Técnica Vitivinícola 34, no. 1 (2019): 15–24. http://dx.doi.org/10.1051/ctv/20193401015.

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The Black Sea region of Turkey receives an annual rainfall of 2000-2500 mm and viticulture in the region depends on the rainfall limits significantly. In this study, the resistance of eighty different Vitis species and cultivars/genotypes to downy and powdery mildew was assessed using Marker Assisted Selection coupled with inoculation observations. Six Simple Sequence Repeats (SSR) and one Sequence Characterized Amplified Region (SCAR) markers were developed for different resistance loci (Run1, Rpv1, Ren1, Rpv3, Ren3) from different Vitis genetic resources. Eight of the cultivars/genotypes wer

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Kamel, Said M., Mohamed M. I. Afifi, Fathia S. El-shoraky, and Mohamad M. El-Sawy. "Fulvic Acid: A Tool for Controlling Powdery and Downy Mildews in Cucumber Plants." International Journal of Phytopathology 3, no. 2 (2014): 101–8. http://dx.doi.org/10.33687/phytopath.003.02.0866.

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A greenhouse experiment was carried out on cucumber cultivar DP-164 during the seasons 2012-2013 to evaluate the efficacy of three concentrations of fulvic acid (FA) to control downy and powdery mildew diseases compared with the recommended fungicides and their effects on plant growth, chlorophyll content and yield of cucumber plants. Results revealed that all FA concentrations significantly reduced disease severity of both diseases. The highest reduction in disease severity of downy mildew was recorded using 75 ppm of FA, which was more effective than the recommended fungicide. The significan

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Chen, Xiaofeng, Xilin Hou, Jingyi Zhang, and Jiaqiu Zheng. "Molecular characterization of two important antifungal proteins isolated by downy mildew infection in non-heading Chinese cabbage." Molecular Biology Reports 35, no. 4 (2007): 621–29. http://dx.doi.org/10.1007/s11033-007-9132-0.

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Zhang, Shengju, Shuancang Yu, Fenglan Zhang, et al. "Inheritance of downy mildew resistance at different developmental stages in Chinese cabbage via the leaf disk test." Horticulture, Environment, and Biotechnology 53, no. 5 (2012): 397–403. http://dx.doi.org/10.1007/s13580-012-0057-8.

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ATAK, Arif, Zekiye GÖKSEL, and Hüseyin ÇELİK. "Relations between downy/powdery mildew diseases andsome phenolic compounds in Vitis spp." TURKISH JOURNAL OF AGRICULTURE AND FORESTRY 41 (2017): 69–81. http://dx.doi.org/10.3906/tar-1610-61.

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Ilnitskaya, E. T., M. V. Makarkina, and S. V. Tokmakov. "DNA marker identification of Rpv3 downy mildew resistance gene in seedless grape varieties." Plant Biotechnology and Breeding 2, no. 3 (2020): 15–19. http://dx.doi.org/10.30901/2658-6266-2019-3-o4.

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Table grapes are a valuable dietary product. Seedless grapes are in high demand among consumers. For this reason, the breeding of seedless varieties is one of the popular trends in modern viticulture, along with the production of environmentally friendly products. Downy mildew (Plasmopara viticola (Berk. & M.A. Curtis) Berl. & De Toni) is one of the most common fungal diseases of the grapevine. Most downy mildew resistant grape accessions belong to North American species like Vitis aestivalis Michx., V. berlandieri Planch., V. cinerea (Engelm. ex A. Gray) Engelm. ex Millard, V. riparia

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Fernández-González, M., A. Piña-Rey, E. González-Fernández, M. J. Aira, and F. J. Rodríguez-Rajo. "First assessment of Goidanich Index and aerobiological data forPlasmopara viticolainfection risk management in north-west Spain." Journal of Agricultural Science 157, no. 2 (2019): 129–39. http://dx.doi.org/10.1017/s0021859619000376.

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AbstractThe climate of north-western Spain, with high temperatures and relative humidity during the grapevine vegetative cycle, can especially favour the development of fungal diseases in vineyards. One of the most important diseases is downy mildew, caused by the fungusPlasmopara viticola. The aim of the current study is to propose a system containing phenological data, biological sensors of pathogen indicator and the agrometeorological Goidanich Index in order to optimize the application of downy mildew fungicide treatments. The study was conducted in a vineyard of the ‘Ribeiro’ Designation

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Miranda-Fuentes, Pedro, Ana B. García-Carneros, and Leire Molinero-Ruiz. "Updated Characterization of Races of Plasmopara halstedii and Entomopathogenic Fungi as Endophytes of Sunflower Plants in Axenic Culture." Agronomy 11, no. 2 (2021): 268. http://dx.doi.org/10.3390/agronomy11020268.

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The management of downy mildew (Plasmopara halstedii) in sunflower, is heavily dependent on genetic resistance, whilst entomopathogenic fungi (EF) can reduce other sunflower diseases. In this work, we characterized P. halstedii from Spain and other countries collected in the past few years. Twenty-three races were identified (the most frequent in Spain being 310, 304, 705 and 715), with an increasing proportion of highly virulent races. Five isolates from countries other than Spain overcame the resistance in RHA-340. In addition, we assessed the efficacy of five EF against downy mildew and the

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Sakr, Nachaat. "Can We Enhance Durable Resistance Against Plasmopara Halstedii (Sunflower Downy Mildew)?" Journal of Plant Protection Research 50, no. 1 (2010): 15–21. http://dx.doi.org/10.2478/v10045-010-0003-7.

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Can We Enhance Durable Resistance AgainstPlasmopara Halstedii(Sunflower Downy Mildew)?Sunflower downy mildew caused byPlasmopara halstediiis one of the most potentially important diseases. So far, a complete, major gene resistance (Pl) has been used successfully, but with the appearance of eight races in France since 2000, research on more durable resistance was undertaken. In this study, we present new results concerning the evolution of pathogenicity ofP. halstediiunder conditions of re-enforced infection and differentPlgene selection pressures. Moreover, we imagine the evolution of virulenc

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Li, Jingjuan, Qian Ding, Fengde Wang, et al. "Genome-wide gene expression profiles in response to downy mildew in Chinese cabbage (Brassica rapa L. ssp. pekinensis)." European Journal of Plant Pathology 151, no. 4 (2018): 861–73. http://dx.doi.org/10.1007/s10658-018-1427-6.

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Gondi, Shruti Prakash, V. M. Ganiger, Bhuvaneshwari G, M. B. Madalageri, Y. K. Kotikal, and Manjunatha G. "Evaluation of Oriental Pickling Melon (Cucumis melo L. Var. conomon) Genotypes for Pest and Disease Reaction under Northern Dry Zone of Karnataka." Journal of Environment and Ecology 7, no. 1 (2016): 29. http://dx.doi.org/10.5296/jee.v7i1.9630.

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<p>Cucurbits are the group of vegetables belongs to the family Cucurbitaceae. Oriental pickling melon (<em>Cucumis melo </em>var. <em>conomon)</em> is one among the melon group vegetables belongs to <em>Cucurbitaceae</em> family<em> </em>with a chromosomal number 2n=24. It is also called as golden melon or culinary melon in English. In Karnataka it is called by local names as <em>Sambar Southe, Mogghe kayi or Mangalore southe</em>. A field experiment was carried out at University of Horticultural Sciences Bagalkot, Karnataka to

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Pithan, Pâmela A., Jorge R. Ducati, Lucas R. Garrido, Diniz C. Arruda, Adriane B. Thum, and Rosemary Hoff. "Spectral characterization of fungal diseases downy mildew, powdery mildew, black-foot and Petri disease on Vitis vinifera leaves." International Journal of Remote Sensing 42, no. 15 (2021): 5680–97. http://dx.doi.org/10.1080/01431161.2021.1929542.

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Imperatore, Gaetano, Aurora Ghirardelli, Luca Strinna, et al. "Evaluation of a Fixed Spraying System for Phytosanitary Treatments in Heroic Viticulture in North-Eastern Italy." Agriculture 11, no. 9 (2021): 833. http://dx.doi.org/10.3390/agriculture11090833.

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Modern viticulture cannot be practiced without the use of plant protection products to control diseases like downy mildew, powdery mildew, and pests. In severely sloping vineyards, where mechanization is not possible, pesticide application is realized using spray guns, which is a laborious, expensive, and dangerous application technique. In these vineyards, where viticulture is defined as “heroic viticulture,” vine-growers could seriously take advantage of innovation in spray-technique applications. For this reason, several prototypes of a fixed spraying system (FSS) were realized in recent ye

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Ribeiro, Márcia NO, Elka FA Almeida, Simone N. Reis, Livia M. Carvalho, Júnia RM Figueiredo, and Pedro M. Ribeiro Júnior. "Manure effect on the incidence of rose diseases in the Integrated Production System." Horticultura Brasileira 34, no. 3 (2016): 412–15. http://dx.doi.org/10.1590/s0102-05362016003017.

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ABSTRACT Deficiency, excess or imbalance in the combinations of nutritional elements can influence the response of plants to pathogen infection by either increasing the level of defense or favoring the occurrence of diseases. The rose is susceptible to several pathogens and the consumer market requires flower stalks with no level of damage. Therefore, in the production of roses the application of pesticides is performed in a preventive and intensive way, which causes environmental contamination. This study evaluated the effects of chemical fertilization management and intercropping with green

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