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Artykuły w czasopismach na temat „Citrus Seedlings”

Autor: Grafiati
Data publikacji: 4 czerwca 2021
Data aktualizacji: 30 stycznia 2023

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1

Liberato, Érica Maria Sauer, Sarita Leonel, Jackson Mirellys Azevedo Souza, and Gabriel Maluf Napoleão. "SUBSTRATE MIXING FORMULATIONS FOR CITRUS NURSERY MANAGEMENT." Nativa 9, no. 5 (December 18, 2021): 500–507. http://dx.doi.org/10.31413/nativa.v9i5.12777.

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The length of citrus seedling development is determined by several factors, including the physical and chemical qualities of the substrate, which affect rootstock growth and, as a result, the quality of field seedlings. The purpose of this study was to see how the ‘Swingle’ citrumelo rootstock developed with different substrate formulations. The experiment was carried out in a seedling nursery from seeding to grafting, and six treatments were carried out, as follows: 60% peat moss, 30% fine grade horticultural vermiculite, 10% rice hulls (1); 60% peat moss, 30% fine grade horticultural vermicu
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2

Albrecht, Ute, and Kim D. Bowman. "Candidatus Liberibacter asiaticus and Huanglongbing Effects on Citrus Seeds and Seedlings." HortScience 44, no. 7 (December 2009): 1967–73. http://dx.doi.org/10.21273/hortsci.44.7.1967.

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Huanglongbing (HLB) is a devastating disease of citrus and threatens the citrus industry worldwide. The suspected causal agent of the disease is a phloem-limited bacterium of the genus Candidatus Liberibacter transmitted through insect vector or grafting with diseased budwood. Currently, most seed source trees for citrus rootstock propagation are located outdoors and unprotected from disease transmission. In addition, fruit from HLB-affected scion varieties in Florida containing seeds enter the commercial trade and move into other citrus-growing areas. The objective of this study was to determ
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3

Rieger, Mark. "Growth, Gas Exchange, Water Uptake, and Drought Response of Seedling- and Cutting-propagated Peach and Citrus Rootstocks." Journal of the American Society for Horticultural Science 117, no. 5 (September 1992): 834–40. http://dx.doi.org/10.21273/jashs.117.5.834.

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Growth, gas exchange, root hydraulic conductivity, and drought response of seedling and rooted cuttings of Lovell and Nemaguard peach [Prunus persica (L.) Batsch], and Carrizo (Poncirus trifoliata × Citrus sinensis) and sour orange (C. aurantium L.) citrus rootstocks were compared to determine the influence of propagation method on these characteristics. Rooted peach cuttings had a higher proportion of root biomass in fibrous roots (≤ mm in diameter) and lower root: shoot ratios than seedlings, although this did not occur in citrus. Net CO2 assimilation (A) was higher for peach seedlings than
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dos Santos, Maria Ângela Cruz Macêdo, Mauricio Antônio Coelho Filho, Francisco José Nunes Modesto, Joseph M. Patt, and Marilene Fancelli. "Behavioral Responses of Asian Citrus Psyllid (Hemiptera: Liviidae) to Salinity-Stressed Citrus." Environmental Entomology 50, no. 3 (April 14, 2021): 719–31. http://dx.doi.org/10.1093/ee/nvab028.

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Abstract Most commercial citrus varieties are intolerant of salinity stress, but some rootstocks, such as Rangpur lime, tolerate moderately saline irrigation water. Development of salinity-tolerant citrus may allow for citriculture in semiarid and arid regions where salinity stress is problematic. Because salinity stress influences shoot growth in citrus, we compared the behavioral responses of Asian citrus psyllid, Diaphorina citri Kuwayama, to salinity-stressed versus nonstressed Rangpur lime seedlings. The effects of salinity stress on key physiological processes in the seedlings were also
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5

Dixon, R. K., H. E. Garrett, and G. S. Cox. "Carbohydrate Relationships of Citrus jambhiri Inoculated with Glomus fasciculatum." Journal of the American Society for Horticultural Science 113, no. 2 (March 1988): 239–42. http://dx.doi.org/10.21273/jashs.113.2.239.

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Abstract Root exudation patterns and carbohydrate composition of roots and leaves of Citrus jambhiri Lush, were examined during the period of initial colonization by Glomus fasciculatum (Thaxt.) Gerd. and Trappe. Exudation of reducing sugars and amino acids from seedling roots decreased as soil and root P increased. Comparison of vesicular-arbuscular mycorrhizal (VAM) seedlings to nonmycorrhizal seedlings of similar size and P nutrition revealed root exudation in VAM plants decreased following fungal colonization. Root reducing sugars increased and root starch content decreased in VAM seedling
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6

Sykes, SR. "Effects of seedling age and size on chloride accumulation by juvenile citrus seedlings treated with sodium chloride under glasshouse conditions." Australian Journal of Experimental Agriculture 25, no. 4 (1985): 943. http://dx.doi.org/10.1071/ea9850943.

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Chloride accumulation by juvenile citrus seedlings treated with sodium chloride for 56 days, using either nutrient solution culture (50 mM NaCl) or pot culture (75 mM NaCl) techniques under glasshouse conditions, was investigated in relation to seedling age. Ranking of cultivars on the basis of leaf chloride concentrations varied according to the age of seedlings examined. Leaf chloride concentrations of 6-, 5-, 4- and 3-month-old seedlings of eight cultivars examined in solution culture decreased with seedling age and were negatively correlated with seedling dry weight within some cultivars.
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7

Bowman, Kim D., Frederick G. Gmitter, and Xulan Hu. "Relationships of Seed Size and Shape with Polyembryony and the Zygotic or Nucellar Origin of Citrus spp. Seedlings." HortScience 30, no. 6 (October 1995): 1279–82. http://dx.doi.org/10.21273/hortsci.30.6.1279.

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We examined the relationship between seed size and shape in Citrus and the number and type of seedlings produced by individual seeds for each of three citrus cultivars. Seed size and shape were related to the number of seedlings produced and the likelihood of recovering a zygotic seedling. The relationship between seed size and shape and the likelihood of recovering a zygotic seedling most often was connected with weight and thickness of a seed. This relationship might be of sufficient strength to use in some aspects of cultivar development. However, the relationship did not appear strong enou
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8

Bisi, Rayane Barcelos, Ute Albrecht, and Kim D. Bowman. "Seed and Seedling Nursery Characteristics for 10 USDA Citrus Rootstocks." HortScience 55, no. 4 (April 2020): 528–32. http://dx.doi.org/10.21273/hortsci14598-19.

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Six new hybrid rootstocks, ‘US-1279’, ‘US-1281’, ‘US-1282’, ‘US-1283’, ‘US-1284’, and ‘US-1516’, were released from the U.S. Department of Agriculture (USDA) citrus breeding program to provide improved tree tolerance to huanglongbing (HLB), the most destructive disease facing the citrus industry in the United States and many other parts of the world. Five of these new rootstocks were released based on field performance in trials with the rootstocks propagated by stem cuttings, rather than the traditional propagation using nucellar seedlings. In this study, we evaluated the fruit, seed, and see
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9

Al-Shahwany, Ayyad W., Fatima K. Mohammad, and Ropak Tofiq. "Influence Soaking Gibberellin acid on seed germination for Citrus limetta and Citrus limonum and their seedlings growth." Journal of Biotechnology Research Center 8, no. 1 (January 1, 2014): 43–49. http://dx.doi.org/10.24126/jobrc.2014.8.1.301.

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Study was undertaken to test the effects of soaking seeds Citrus limetta and Citurs limonum in Gibberellic acid (GA3) solutions 0, 100, 500, 1000 mg / L for 24 hours prior on the rate of germination, some morphological characteristics for seedlings also were investigated in this study. Factorial experiment was carried out 4×2×5 in a randomized complete block design with five replicates for each type of seed during the period of March to September 2011. The results showed significant differences in most traits, as it reached the highest percentage of germination for the treatment with 500 mg/l
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10

Anderson, Catalina M., William S. Castle, and Gloria A. Moore. "Isozymic Identification of Zygotic Seedlings in Swingle Citrumelo Citrus paradisi × Poncirus trifoliata Nursery and Field Populations." Journal of the American Society for Horticultural Science 116, no. 2 (March 1991): 322–26. http://dx.doi.org/10.21273/jashs.116.2.322.

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Isozyme analysis was the basis for determining the frequency of occurrence and the characteristics of zygotic plants in Swingle citrumelo seedling populations from various sources of open-pollinated seeds, in a commercial nursery of Swingle citrumelo before and after roguing, and in commercial orchards and rootstock trials where this rootstock was used. Most zygotic seedlings identified by isozyme analysis could be distinguished by careful examination of morphological characteristics. Frequencies of zygotic seedlings varied among seedling populations, but were in the range (≈5% to 10%) found i
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11

Williamson, Jeffrey G., Karen E. Koch, and William S. Castle. "CITRUS ROOTSTOCK SHOOTS ENHANCE SCION GROWTH AFTER BUD FORCING." HortScience 25, no. 9 (September 1990): 1152d—1152. http://dx.doi.org/10.21273/hortsci.25.9.1152d.

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Carrizo citrange [Citrus sinensis (L.) Osb. × Poncirus trifoliata (L.) Raf.] seedlings were budded with `Hamlin' orange [Citrus sinensis (L.) Osb.] and subjected to 3 bud forcing treatments: (1) topping [T] by removing the seedling above the bud union; (2) lopping [L] by cutting half way through the seedling above the bud union and breaking the rootstock over; or, (3) bending [B] the seedling top over and tying it to the base of the plant. As scion buds emerged and grew, plants were sacrificed for dry weight measurements; also, the portion of the rootstock seedling above the bud union was expo
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12

Bamisile, Bamisope Steve, Komivi Senyo Akutse, Chandra Kanta Dash, Muhammad Qasim, Luis Carlos Ramos Aguila, Hafiza Javaria Ashraf, Wei Huang, Mubasher Hussain, Shiman Chen, and Liande Wang. "Effects of Seedling Age on Colonization Patterns of Citrus limon Plants by Endophytic Beauveria bassiana and Metarhizium anisopliae and Their Influence on Seedlings Growth." Journal of Fungi 6, no. 1 (February 25, 2020): 29. http://dx.doi.org/10.3390/jof6010029.

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The inoculation methods, the fungal strains, and several other factors are known to influent the success of fungal entomopathogens colonization in plants. The physiological status of the plant could also be another determinant. In the present study, the ability of three strains of Beauveria bassiana and one strain of Metarhizium anisopliae to successfully colonize Citrus limon plants and the influence of seedling age on endophytic colonization success was examined. Three, 4, and 6 months old seedlings were inoculated with 10 mL of 1 × 108 conidial·mL−1 suspensions of each of the four fungal st
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13

Snowball, Angela M., Elizabeth A. Halligan, I. J. Warrington, and M. G. Mullins. "Phase change in citrus: Growth and flowering of citrus seedlings from thirteen genetically diverse seedling families." Journal of Horticultural Science 69, no. 1 (January 1994): 141–48. http://dx.doi.org/10.1080/14620316.1994.11515260.

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14

Singh, Megh, and Wondimagegnehu Mersie. "Metalaxyl Toxicity to Citrus with or without Herbicides." Weed Technology 7, no. 2 (June 1993): 511–14. http://dx.doi.org/10.1017/s0890037x00027962.

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The response of potted ‘Cleopatra’ mandarin citrus seedlings to metalaxyl applied as a mixture with metolachlor, simazine, or bromacil, or as a sequential application after the herbicides was investigated under screen house conditions. The soils were drenched with herbicides at 2.5 ppmw (mg kg−1 soil dry wt basis) in tank-mixes with metalaxyl or metalaxyl was applied as a soil drench at 5, 50, and 250 ppmw 1, 2, 3, and 4 wk after herbicide application. Citrus seedling response to treatment was dependent on the presence or absence of herbicide, metalaxyl concentration, and the time following ap
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15

Rouse, Robert E. "Controlling Citrus Rootstock Sprouting in the Nursery Using Commercially Available NAA." HortScience 30, no. 4 (July 1995): 888F—888. http://dx.doi.org/10.21273/hortsci.30.4.888f.

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Tre-Hold, a commercially available sprout inhibitor containing ethylnaphthaleneacetate (NAA) for newly planted citrus trees in orchards was effective to prevent axillary bud growth on rootstock seedlings in the nursery. Tre-Hold applied at formulated concentration (1×), three-fourths (3/4×), and one-half (1/2×) to field-grown and container-grown greenhouse seedlings prevented sprouting. It was possible to control dormancy of individual buds without affecting adjacent buds. When applied to green citrus tissue, no phytotoxicity occurred. Full concentration of Tre-Hold was found to prevent scion
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16

Eissenstat, David M., Javier F. Espeleta, and Eric L. Whaley. "Responses of the Fine Roots of Citrus to Dry Surface Soil." HortScience 31, no. 4 (August 1996): 577a—577. http://dx.doi.org/10.21273/hortsci.31.4.577a.

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Despite the frequent occurrence of hot, dry surface soil, little is known about the fate of roots in this soil layer during and following periods of surface drought. Phosphorus uptake kinetics were examined in surface roots of citrus seedlings exposed to different periods of drought. Exposure to dry soil for up to 43 days had no effect on phosphate uptake of excised roots measured at solution concentrations of 50, 750, and 1500 μm phosphate. Effects of surface drought on fine root behavior of seedlings and bearing trees were examined in the field using a split-pot arrangement. At the end of 5
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17

Reddy, Krishna N., and Megh Singh. "Response of Citrus (Citrus spp.) Rootstock Seedlings to Soil-Applied Herbicides." Journal of Environmental Horticulture 11, no. 1 (March 1, 1993): 39–40. http://dx.doi.org/10.24266/0738-2898-11.1.39.

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Abstract A greenhouse study was conducted to evaluate the response of Carrizo citrange [Citrus sinensis (L.) Obs. × Poncirus trifoliata (L.) Raf.], Cleopatra mandarin (C. reticulata Blanco), sour orange (C. aurantium L.), and Swingle citrumelo [C. paradisi Macf. × P. trifoliata (L.) Raf.] citrus rootstock seedlings to multiple applications of Premier (fluometralin), Dual (metolachlor), Devrinol (napropamide), Solicam (norflurazon), Surflan (oryzalin), Prowl (pendimethalin), and Treflan trifluralin). The citrus rootstock responses ranged from a 11% reduction in shoot weight of sour orange with
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18

Peres, Natália A. R., Soonho Kim, Howard W. Beck, Nilton L. Souza, and Lavern W. Timmer. "A Fungicide Application Decision (FAD) Support System for Postbloom Fruit Drop of Citrus (PFD)." Plant Health Progress 3, no. 1 (January 2002): 16. http://dx.doi.org/10.1094/php-2002-0731-01-rv.

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Surveys were conducted to identify fungi associated with postemergence cotton seedling disease in Missouri. Samples consisted of 10 cotton seedlings, 2 to 3 weeks after emergence, with symptoms of seedling diseases collected from a 0.25 ha area in each of 60 fields in 1997 and 1998. Four genera of fungi were cultured from the roots (Fusarium, Pythium, Rhizoctonia, and Thielaviopsis) and three species were identified: Rhizoctonia solani, Thielaviopsis basicola, and Pythiumultimum. Rhizoctonia solani, T. basicola, and P. ultimum were cultured from seedlings in 70%, 47%, and 15% of fields sampled
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Vashisth, Tripti, Changpin Chun, and Monica Ozores Hampton. "Florida Citrus Nursery Trends and Strategies to Enhance Production of Field-Transplant Ready Citrus Plants." Horticulturae 6, no. 1 (February 1, 2020): 8. http://dx.doi.org/10.3390/horticulturae6010008.

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The Florida citrus industry is going through major changes and considerable replanting. Many growers are planting varieties, especially rootstocks, that are potentially productive under Huanglongbing (HLB; Candidatus Liberibacter asiaticus) prevalent conditions. However, the high demand for new plant material has put tremendous pressure on citrus nurseries and has created a bottleneck in production. Often it can take more than one year to produce field-transplant ready plants in nurseries; therefore, there is a critical need to accelerate plant production. This three-part study was conducted w
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Oiyama, Iwao, and Shozo Kobayashi. "Citrus Pentaploids from Small Seeds of Diploid × Diploid Crosses." HortScience 26, no. 3 (March 1991): 292–93. http://dx.doi.org/10.21273/hortsci.26.3.292.

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Seedlings from some small seeds of diploid × diploid crosses using `Miyauchi iyokan' (Citrus iyo Hort. ex Tanaka) as the seed parent were found to be pentaploid (2n = 5x = 45). The growth of pentaploid seedlings was extremely weak on their own roots, but was much more vigorous when micrografted on seedlings of tetraploid trifoliate orange [Poncirus trifoliata (L.) Raf.]. Diploid `Miyauchi iyokan' produced hexaploid seedlings from small seeds in addition to triploid and tetraploid seedlings from normal seeds when crossed with tetraploid `Funadoko' (C. funadoko Hort. ex Y. Tanaka) and `Trovita'
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21

Albrecht, Ute, and Kim D. Bowman. "Tolerance of the Trifoliate Citrus Hybrid US-897 (Citrus reticulata Blanco × Poncirus trifoliata L. Raf.) to Huanglongbing." HortScience 46, no. 1 (January 2011): 16–22. http://dx.doi.org/10.21273/hortsci.46.1.16.

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Huanglongbing (HLB) is a destructive disease of citrus in most citrus-producing countries worldwide. The disease, presumably caused by phloem-limited bacteria of the genus Candidatus Liberibacter, affects all known citrus species and citrus relatives with little known resistance. Typical disease symptoms are the production of abnormal-looking fruit and chlorosis or blotchy mottle of the leaves followed at advanced stages by tree decline and death. Trifoliate orange (P. trifoliata L. Raf.) and some of its hybrids reportedly lack distinct disease symptoms despite infection with the pathogen. US-
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Scholberg, J. M. S., L. R. Parsons, and T. A. Wheaton. "507 Nitrogen Uptake Dynamics of Citrus Seedlings." HortScience 35, no. 3 (June 2000): 482B—482. http://dx.doi.org/10.21273/hortsci.35.3.482b.

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Improving our understanding of processes that control and limit nitrogen uptake by citrus can provide a scientific basis for enhancing nitrogen fertilizer use efficiency. Nitrogen uptake dynamics of two rootstock seedlings will be compared to those of young budded trees. Three-month old Swingle citrumelo [Citrus paradisi Macf. × Poncirus trifoliata (L.) Raf.] and Volkamer lemon (C. volkameriana Ten. & Pasq.) trees were planted in PVC columns filled with a Candler fine sand. Field experiments were conducted using 4-year-old `Hamlin' orange trees [Citrus sinensis (L.) Osb.] grafted on `Carri
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FONSECA, ANTONIO EDUARDO, BRUNO DE MORAES NUNES, and JOÃO BATISTA FERREIRA JÚNIOR. "TENACITY AND PERSISTENCE OF COPPER FUNGICIDES IN CITRUS SEEDLINGS UNDER SIMULATED RAINFALL." Revista Caatinga 29, no. 3 (September 2016): 677–84. http://dx.doi.org/10.1590/1983-21252016v29n318rc.

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ABSTRACT The amount of fungicide that adheres to the leaf during spraying and the amount that remain on the leaf after weathering are the main factors that defines the amount of active residue on the leaf surface to effectively control plant pathogens. Thus, the objective of this work was to evaluate the tenacity and persistence of copper in citrus seedling leaves under simulated rainfall in Jaboticabal, State of São Paulo, Brazil. The evaluated variables were copper content, solution retention, surface tension and drop spectrum. A significant and inversely proportional linear relationship to
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GAFNY, R., N. MOGILNER, Y. NITZAN, J. BEN-SHALOM, and M. BAR-JOSEPH. "The movement and distribution of citrus tristeza virus and citrus exocortis viroid in citrus seedlings." Annals of Applied Biology 126, no. 3 (June 1995): 465–70. http://dx.doi.org/10.1111/j.1744-7348.1995.tb05381.x.

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Baron, Daniel, Gisela Ferreira, Carmen Sílvia Fernandes Boaro, and Martha Maria Mischan. "Evaluation of substrates on the emergence of "araticum-de-terra-fria" (Annona emarginata (Schltdl.) H. Rainer) Seedlings." Revista Brasileira de Fruticultura 33, no. 2 (May 27, 2011): 575–86. http://dx.doi.org/10.1590/s0100-29452011005000053.

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Choosing a substrate is the determinant factor for the seedling producer; thus, the aim of this study was to evaluate the effect of different types of substrates on the emergence of "araticum-de-terra-fria" (Annona emarginata (Schltdl.) H. Rainer) seedlings. The experiment was carried out in a greenhouse and the experimental design was in randomized blocks, with three treatments and five replicates of 72 seeds per plot. The treatments consisted of the following substrates: coconut fiber, vermiculite and Plantmax® Citrus. The number of emerged seedlings was weekly counted for 105 days. Data reg
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Wu, Q. S., Y. N. Zou, W. Liu, X. F. Ye, H. F. Zai, and L. J. Zhao. "Alleviation of salt stress in citrus seedlings inoculated with mycorrhiza: changes in leaf antioxidant defense systems." Plant, Soil and Environment 56, No. 10 (October 20, 2010): 470–75. http://dx.doi.org/10.17221/54/2010-pse.

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Citrus is a salt-sensitive plant. In the present study, the salt stress ameliorating the effect of arbuscular mycorrhizal fungi through antioxidant defense systems was reported. Three-month-old trifoliate orange (Poncirus trifoliata) seedlings colonized by Glomus mosseae or G. versiforme were irrigated with 0 and 100 mmol NaCl solutions. After 49 days of salinity, mycorrhizal structures were obviously restrained by salt stress. Mycorrhizal inoculation especially G. mosseae significantly alleviated the growth reduction of salinity. There were notably lower malondialdehyde and hydrogen peroxide
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Singh, Jagveer, Harvinder Singh Dhaliwal, Anirudh Thakur, Gurupkar Singh Sidhu, Parveen Chhuneja, and Frederick G. Gmitter. "Optimizing Recovery of Hybrid Embryos from Interspecific Citrus Crosses of Polyembryonic Rough Lemon (Citrus jambhiri Lush.)." Agronomy 10, no. 12 (December 10, 2020): 1940. http://dx.doi.org/10.3390/agronomy10121940.

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The prevalence of rough lemon rootstock in India is presently threatened by the spread of Phytophthora root rot. Developing an alternative Phytophthora-resistant rootstock that also withstands other abiotic constraints is a priority for a sustainable citrus industry in India. Complementary progenitors can be found in citrus germplasm to combine the desired traits, particularly between Citrus and Poncirus, a closely related genus. The production of hybrids accumulating the desired dominant traits, irrespective of the heterozygosity level of the parents, is an effective way to develop new candid
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Marques, Léo O. D., Paulo Mello-Farias, Roberto P. de Oliveira, Maximiliano Dini, Walter S. Soares Filho, and Marcelo B. Malgarim. "Emergence Percentage and Speed of Rootstocks for Citriculture in South of Brazil." Journal of Agricultural Science 11, no. 5 (April 15, 2019): 49. http://dx.doi.org/10.5539/jas.v11n5p49.

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The fact that Brazilian citriculture has focused on few rootstocks poses several phytosanitary risks to the culture and has made genetic improvement programs develop hybrid genotypes to be used as novel alternatives. This study aimed at evaluating the behavior of 42 different rootstocks regarding their emergence percentage and speed in weather conditions experienced in the extreme south of Brazil. Seeds of hybrids developed by the Citrus Genetic Improvement Program (PMG Citros) at the Embrapa Mandioca e Fruticultura (PMG Citros) and cultivars from other citrus growing regions were sown in coni
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Sorgonà, A., and G. Cacco. "Linking the physiological parameters of nitrate uptake with root morphology and topology in wheat (Triticum durum) and citrus (Citrus volkameriana) rootstock." Canadian Journal of Botany 80, no. 5 (May 1, 2002): 494–503. http://dx.doi.org/10.1139/b02-029.

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The relationships between net nitrate uptake and root morphology and topology were investigated in wheat (Triticum durum Desf.) and citrus (Citrus volkameriana Ten. & Pasq.) seedlings in which root systems were modified by supplying different nutrient concentrations. Root morphological and topological changes were assessed by the number of root tips, the total root length, and the topological index. The net nitrate uptake process was evaluated during the induction and inhibition "feedback" regulation phases. In wheat seedlings, an increase in the external nitrate concentration, at either h
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Hilf, Mark E. "Colonization of Citrus Seed Coats by ‘Candidatus Liberibacter asiaticus’: Implications for Seed Transmission of the Bacterium." Phytopathology® 101, no. 10 (October 2011): 1242–50. http://dx.doi.org/10.1094/phyto-11-10-0323.

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Huanglongbing is an economically damaging disease of citrus associated with infection by ‘Candidatus Liberibacter asiaticus’. Transmission of the organism via infection of seeds has not been demonstrated but is a concern since some citrus varieties, particularly those used as rootstocks in commercial plantings are propagated from seed. We compared the incidence of detection of ‘Ca. Liberibacter asiaticus’ DNA in individual fruit peduncles, seed coats, seeds, and in germinated seedlings from ‘Sanguenelli’ sweet orange and ‘Conners’ grapefruit fruits sampled from infected trees. Using real-time
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31

Cheng, Frank Suozhan, and Mikeal L. Roose. "Origin and Inheritance of Dwarfing by the Citrus Rootstock Poncirus trifoliata `Flying Dragon'." Journal of the American Society for Horticultural Science 120, no. 2 (March 1995): 286–91. http://dx.doi.org/10.21273/jashs.120.2.286.

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`Flying Dragon' Poncirus trifoliata L. Raf. is a dwarfing rootstock for citrus. Inheritance of dwarfing ability was studied in a population of open-pollinated seedlings of `Flying Dragon'. Molecular marker genotypes suggest that all seedlings originated from selfing. Progeny seedlings were budded with `Cutter Valencia' orange and planted in the field to evaluate the dwarfing effect of the seedling rootstock. At 5 years after planting, rankit analysis of the frequency distributions of trunk cross-sectional area and canopy volume suggested the presence of two overlapping distributions of 34 dwar
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32

Tignor, Milton E., and Peter J. Stoffella. "595 Computer Root Image Analysis of Citrus Rootstock Seedlings." HortScience 35, no. 3 (June 2000): 499D—499. http://dx.doi.org/10.21273/hortsci.35.3.499d.

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Florida citrus has had an average annual on-tree-value of ≈1 billion dollars during the past decade in Florida. Nearly all of the 845,260 acres of citrus in Florida is produced on grafted trees consisting of a commercial scion cultivar and a rootstock selected specifically for local soil, environment, and pest pressures. With vastly different root-zone environments, ranging from deep sands to drained and cleared pine Flatwoods, a large number of different rootstocks are utilized. These rootstocks are started from seed at more than 100 commercial nurseries statewide, which currently produce an
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33

Widmer, T. L., J. H. Graham, and D. J. Mitchell. "Composted Municipal Waste Reduces Infection of Citrus Seedlings by Phytophthora nicotianae." Plant Disease 82, no. 6 (June 1998): 683–88. http://dx.doi.org/10.1094/pdis.1998.82.6.683.

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Most citrus nurseries and orchards in Florida are infested with Phytophthora nicotianae, the causal agent of Phytophthora root rot. Although fungicides control the disease and increase seedling growth and tree yields, they are not always economically or environmentally sustainable. Amendment of citrus soils with composted municipal waste (CMW) may provide an alternative to fungicides for disease management. Citrus seedling growth decreased with increasing proportions of one CMW source, indicating the potential for phytotoxicity from soluble salts and acetic acid when the proportion of CMW in s
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34

Krueger, Robert R., and Mikeal L. Roose. "Use of Molecular Markers in the Management of Citrus Germplasm Resources." Journal of the American Society for Horticultural Science 128, no. 6 (November 2003): 827–37. http://dx.doi.org/10.21273/jashs.128.6.0827.

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New potential citrus germplasm accessions may be received as seed rather than budwood, thereby reducing phytosanitary risks. However, trueness-to-type may be an issue with seed materials because many varieties produce both apomictic (nucellar) and sexual (zygotic) embryos and most citrus is fairly heterozygous. To identify nucellar seedlings of polyembryonic types and to retain these as representing the type, we screened 1340 seedlings from 88 seed sources for markers amplified with two inter-simple sequence repeat (ISSR) primers. Sixteen seed sources produced no seedlings classified as being
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35

Gonzalez, Pedro, James P. Syvertsen, and Ed Etxeberria. "Sodium Distribution in Salt-stressed Citrus Rootstock Seedlings." HortScience 47, no. 10 (October 2012): 1504–11. http://dx.doi.org/10.21273/hortsci.47.10.1504.

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Although citrus trees are considered relatively salt-sensitive, there are consistent differences in Na+ and Cl– tolerance among different citrus rootstocks. We grew uniform seedlings of rough lemon (RL) and the more Na+-tolerant Swingle citrumelo (SC) with and without 50 mm NaCl for 42 days. Salinity reduced leaf chlorophyll and plant transpiration rate (Ep) more in RL than SC. Confocal laser scanning analyses using the Na+-specific cell-permeant fluorescent probe CoroNa-Red revealed a higher capacity for Na+ sequestration in root tissue vacuoles of SC than in RL roots and that cell walls with
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36

YAMAMOTO, Masashi, Ryoji MATSUMOTO, Naomi OKUDAI, and Kensuke ASADA. "Segregation for Rind Texture in Citrus Hybrid Seedlings." Journal of the Japanese Society for Horticultural Science 59, no. 1 (1990): 15–21. http://dx.doi.org/10.2503/jjshs.59.15.

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37

Westbrook, Catherine J., David G. Hall, Ed Stover, Yong Ping Duan, and Richard F. Lee. "Colonization of Citrus and Citrus-related Germplasm by Diaphorina citri (Hemiptera: Psyllidae)." HortScience 46, no. 7 (July 2011): 997–1005. http://dx.doi.org/10.21273/hortsci.46.7.997.

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Huanglongbing (HLB) is a serious and devastating disease of citrus caused by Candidatus Liberibacter spp. and vectored by the Asian citrus psyllid, Diaphorina citri Kuwayama (Hemiptera: Psyllidae). The disease has the potential to greatly limit the production of citrus in Florida and other citrus-growing regions worldwide. Current control of D. citri and HLB is inadequate, but the identification and incorporation of D. citri resistance traits from uncultivated Citrus spp. and Citrus relatives is seen as a potential disease management strategy. In this study, seedlings of 87 Rutaceae seed-sourc
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38

YILDIZ, Ercan, Mustafa KAPLANKIRAN, Turan Hakan DEMİRKESER, Aydin UZUN, and Celil TOPLU. "Identification of Zygotic and Nucellar Individuals Produced from Several Citrus Crosses Using SSRs Markers." Notulae Botanicae Horti Agrobotanici Cluj-Napoca 41, no. 2 (December 6, 2013): 478. http://dx.doi.org/10.15835/nbha4129037.

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Turkey is an important citrus-producing country. However, new cultivars are needed to sustain citrus production and ensure its competitiveness against other crops. There are currently several citrus breeding programs that aim to help overcome the lack of local commercial varieties and to contribute to Turkey’s competitive capacity in the citrus market. In this study, we report the utilization of molecular markers in one such breeding program. Simple sequence repeat (SSR) markers were employed to eliminate nucellar individuals from a hybrid population produced by crossing. The crosses included
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39

Usman, M., T. Saeed, M. M Khan, and B. Fatima. "Occurrence of spontaneous polyploids in Citrus." Horticultural Science 33, No. 3 (November 23, 2011): 124–29. http://dx.doi.org/10.17221/3751-hortsci.

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Seedlings recovered from underdeveloped seeds of different commercial cultivars of Citrus were studied for their ploidy level. Cytological examination revealed that maximum triploid plants were found in lime Kaghzi (15.5%) followed by grapefruit Foster, mandarin Kinnow, sweet orange Musambi and mandarin Feutrell’s Early (7.3%). Lime also produced the highest percentage of tetraploids (9.1%) followed by mandarin Kinnow and grapefruit Foster, while the minimum was found in mandarin Feutrell’s Early. The polyploids were transplanted in pots and after hardening they were grown
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40

Singh, Jagveer, H. S. Dhaliwal, Anirudh Thakur, G. S. Sidhu, P. Chhuneja, and Kuldeep Pandey. "Ex vitro recovery of rough lemon (Citrus jambhiri) hybrids and identification with SSR markers." Indian Journal of Agricultural Sciences 90, no. 4 (July 10, 2020): 823–27. http://dx.doi.org/10.56093/ijas.v90i4.102232.

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Rough lemon (Citrus jambhiri Lush) is one of the leading citrus rootstock around the world besides sour orange. In the present studies, rough lemon was crossed with X 639 and Swingle citrumelo at Department of Fruit Science, PAU Ludhiana during 2015-16. Cent per cent seed germination was recorded for both the crosses under in vitro conditions but, the germination rates with growing media in plug trays were significantly lower (91.3 and 89.2% for RL× X and RL × SC, respectively). Higher proportion of multi-foliate seedlings (26.89%) was recovered by in vitro seed culture over the ex vitro seed
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41

Nemec, S., J. Syversten, and Y. Levy. "Water relations of rough lemon (Citrus jambhiri Lush.) citrus seedlings infected withFusarium solani." Plant and Soil 93, no. 2 (June 1986): 231–39. http://dx.doi.org/10.1007/bf02374225.

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42

Syvertsen, J. P., and J. M. Dunlop. "Hydrophilic Gel Amendments to Sand Soil Can Increase Growth and Nitrogen Uptake Efficiency of Citrus Seedlings." HortScience 39, no. 2 (April 2004): 267–71. http://dx.doi.org/10.21273/hortsci.39.2.267.

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We tested the hypothesis that amendments of two hydrophilic gels to a sand soil would reduce N leaching losses and increase growth of citrus seedlings. Three-month-old seedlings of `Swingle' citrumelo [Citrus paradisi Macf. × Poncirus trifoliata (L.) Raf.] were transplanted into containers of steam-sterilized Candler sand, amended with a linear acrylamide/acrylate copolymer (PAM), and/or a cross-linked copolymer agronomic gel (AGRO). Two rates of each amendment were applied either alone or together and were either mixed into dry sand prior to seedling transplant, used as a root-dip slurry at t
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43

Mendes, Beatriz Madalena Januzzi, Raquel Luciana Boscariol, Francisco de Assis Alves Mourão Filho, and Weliton Antonio Bastos de Almeida. "Agrobacterium-mediated genetic transformation of 'Hamlin' sweet orange." Pesquisa Agropecuária Brasileira 37, no. 7 (July 2002): 955–61. http://dx.doi.org/10.1590/s0100-204x2002000700009.

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The development and optimization of efficient transformation protocols is essential in new citrus breeding programs, not only for rootstock, but also for scion improvement. Transgenic 'Hamlin' sweet orange (Citrus sinensis (L.) Osbeck) plants were obtained by Agrobacterium tumefaciens-mediated transformation of epicotyl segments collected from seedlings germinated in vitro. Factors influencing genetic transformation efficiency were evaluated including seedling incubation conditions, time of inoculation with Agrobacterium and co-culture conditions. Epicotyl segments were adequate explants for t
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44

Chilembwe, Eric H. C., William S. Castle, and Daniel J. Cantliffe. "Grading, Hydrating, and Osmotically Priming Seed of Four Citrus Rootstock to Increase Germination Rate and Seedling Uniformity." Journal of the American Society for Horticultural Science 117, no. 3 (May 1992): 368–72. http://dx.doi.org/10.21273/jashs.117.3.368.

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Commercially processed citrus seeds of Carrizo citrange [Citrus sinensis (L.) Osb. × Poncirus trifoliata (L) Raf.], Swingle citrumelo (C. paradisi Macf. × P. trifoliata), Cleopatra mandarin (C. reticulate Blanco), and sour orange (C. aurantium L.) were used to test the effects of grading, hydrating, and priming on the rate of germination and seedling emergence. Sorting seed into groups by fresh weight or diameter did not generally improve seed performance. Seed fresh weight was highly correlated with maximum seed diameter; also, large seed weight and size were associated with a larger number o
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45

MOHAMMED, A. J., and ALI S. A. AL-JANABI. "LIQUEFIED WATER AND ANTIOXIDANTS INFLUENCE ON VEGETATIVE GROWTH AND PHYSIOLOGICAL TRAITS OF SWEET ORANGE." SABRAO Journal of Breeding and Genetics 54, no. 4 (October 31, 2022): 917–26. http://dx.doi.org/10.54910/sabrao2022.54.4.22.

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Citrus production faces many problems; a major one consists of irrigating citrus seedlings grown at Agricultural Research Stations and various nurseries with saline well water, which determines the growth, reproduction, and spread of citrus in Iraq. The said problem needs addressing to reduce its effects on the growth and reproduction of citrus fruits. Therefore, the latest research aimed to determine the effects of regular liquefied water and saline well water, in addition to a foliar spray of aspartic and ascorbic acids, on the growth and physiological properties of the grafted orange seedli
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46

Wu, Qiang Sheng, and Qiu Dan Ni. "Selection of an Efficient Growth Container for Mycorrhization of Trifoliate Orange Seedlings in Nursery." Advanced Materials Research 726-731 (August 2013): 4517–20. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.4517.

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Citrus plants strongly depend on arbuscular mycorrhizas (AMs) but low AM colonization found in the field. Therefore, mycorrhization of seedlings is vital for better citrus growth vigor. The study evaluated the effects of four containers (earthen pot, plastic pot, nursery cylinder, and nursery bag) on growth, mycorrhizal development, root system architecture (RSA) and chlorophyll concentration of trifoliate orange (Poncirus trifoliata) seedlings inoculated withGlomus versiforme. After five months, AM seedlings grown in an earthen pot displayed the best AM colonization, vesicles, entry points, s
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47

Ferguson, J. J., and J. A. Menge. "Response of Citrus Seedlings to Various Field Inoculation Methods with Glomus deserticola in Fumigated Nursery Soils." Journal of the American Society for Horticultural Science 111, no. 2 (March 1986): 288–92. http://dx.doi.org/10.21273/jashs.111.2.288.

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Abstract Broadcasting, banding, and drilling were more effective in the field inoculation of plants with the vesicular arbuscular mycorrhizal fungus, Glomus deserticola Trappe, Bloss and Menge than seed inoculation or the application of lyophilized roots to both direct-seeded and transplanted citrus seedlings. Mechanized field inoculation of direct seeded and transplanted citrus seedlings is feasible, using fertilizer banding equipment, and seeding machines. In oculum remained consistently infective after soil inoculation for up to 2.5 months in fumigated field soil and for up to 1.5 months in
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48

Beloti, Vitor H., Gustavo R. Alves, Helvécio D. Coletta-Filho, and Pedro T. Yamamoto. "The Asian Citrus Psyllid Host Murraya koenigii Is Immune to Citrus Huanglongbing Pathogen ‘Candidatus Liberibacter asiaticus’." Phytopathology® 108, no. 9 (September 2018): 1089–94. http://dx.doi.org/10.1094/phyto-01-18-0012-r.

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The Asian citrus psyllid (ACP) Diaphorina citri, vector of ‘Candidatus Liberibacter asiaticus’ (CLas), the putative causal agent of citrus Huanglongbing (HLB), is controlled by application of insecticides, which, although effective, has resulted in serious biological imbalances. New management tools are needed, and the technique known as “trap crop” has been attracting attention. A potential plant for use as a trap crop in the management of the ACP is Murraya koenigii (curry leaf). However, for this plant to be used in the field, it needs to be attractive for the vector and must not harbor CLa
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49

Yin, Hang, Junxiu Wang, Yao Zeng, Xinjian Shen, Yizhong He, Lili Ling, Li Cao, Xingzheng Fu, Liangzhi Peng, and Changpin Chun. "Effect of the Rare Earth Element Lanthanum (La) on the Growth and Development of Citrus Rootstock Seedlings." Plants 10, no. 7 (July 6, 2021): 1388. http://dx.doi.org/10.3390/plants10071388.

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Rare earth elements (REEs) can affect the growth and development of plants. However, few studies have been carried out on the effects of REEs on citrus seedlings. In this study, the growth parameters, toxicity symptoms, chlorophyll content, and La content of three citrus rootstocks are analyzed under different concentrations of La, a representative REE. The results show that the growth of citrus rootstock seedlings was stimulated at La ≤ 0.5 mmol·L−1 and inhibited at concentrations above 1 mmol·L−1. The chlorophyll and carotenoid contents of trifoliate orange (Poncirus trifoliata L. Raf.) and
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50

Huang, Wei-Tao, Yi-Zhi Xie, Xu-Feng Chen, Jiang Zhang, Huan-Huan Chen, Xin Ye, Jiuxin Guo, Lin-Tong Yang, and Li-Song Chen. "Growth, Mineral Nutrients, Photosynthesis and Related Physiological Parameters of Citrus in Response to Nitrogen Deficiency." Agronomy 11, no. 9 (September 16, 2021): 1859. http://dx.doi.org/10.3390/agronomy11091859.

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Limited data are available on the physiological responses of Citrus to nitrogen (N) deficiency. ‘Xuegan’ (Citrus sinensis (L.) Osbeck) and ‘Shantian pummelo’ (Citrus grandis (L.) Osbeck) seedlings were fertilized with nutrient solution at a N concentration of 0, 5, 10, 15 or 20 mM for 10 weeks. N deficiency decreased N uptake and N concentration in leaves, stems and roots and disturbed nutrient balance and homeostasis in plants, thus inhibiting plant growth, as well as reducing photosynthetic pigment levels and impairing thylakoid structure and photosynthetic electron transport chain (PETC) in
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