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Vegetative Compatibility and Virulence Diversity of Verticillium dahliae from Okra (Abelmoschus esculentus) Plantations in Turkey and Evaluation of Okra Landraces for Resistance to V. dahliae

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Phyton-International Journal of Experimental Botany 2020年第2期89卷 303-314页

作者： Fatih M.Tok Sibel Dervis halit yetisir Hatay Mustafa Kemal University Department of Plant ProtectionFaculty of AgricultureAntakyaHatay31034Turkey Mardin Artuklu University Vocational School of KızıltepeDepartment of Plant and Animal ProductionMardin47000Turkey Erciyes University Department of HorticultureFaculty of AgricultureKayseri38225Turkey

Forty-four *** isolates were collected from symptomatic vascular tissues of okra plants each from a different field in eight provinces located in the eastern Mediterranean and western Anatolia regions of Turkey during ***-nonutilizing(nit)mutants of *** from okra were used to determine heterokaryosis and genetic relatedness among *** isolates from okra plants were grouped into two vegetative compatibility groups(VCGs)(1 and 2)and three subgroups as 1A(13.6%,6/44),2A(20.5%,9/44)and 2B(65.9%,29/44)according to international *** tests were performed on a susceptible local okra(***)landrace in greenhouse *** isolates from VCG1A and VCG2B induced defoliation(D)and partial defoliation(PD)symptoms,*** isolates from VCG2A gave rise to typical leaf chlorosis symptoms without *** obtained data showed that the virulence level of *** isolates from okra was related to their VCG *** okra landraces from diverse geographical origins were screened for resistance to VCG2B and VCG1A of *** results indicated that all landraces were more susceptible to highly virulent VCG1A-D pathotype displaying D or PD symptoms depending on their susceptibility levels with a mean disease severity index of 3.52 than to less virulent VCG2B-PD pathotype of *** displaying PD and ND symptoms with a mean disease severity index of *** differences were observed among the landraces;however,none of them exhibited a level of *** landraces;Çorum,Hatay Has and Sanlıurfa displayed the lowest level of susceptibility or little tolerance to both D and PD ***2B of PD was prevailing in the surveyed areas and VCG1A of D was the most virulent of the VCGs *** of resistant genotypes to Turkish okra germplasm from different sources and breeding new resistant okra cultivars are critical for the sustainability of okra production.

关键词： Landraces Malvaceae nit mutants pathotypes VCGs defoliating wilt

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Rootstocks effect on plant nutrition concentration in different organ of grafted watermelon

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Agricultural Sciences 2013年第5期4卷 230-237页

作者： halit yetisir A.Erhan Ozdemir Veysel Aras Elif Candır Omer Aslan Department of Horticulture Faculty of AgricultureUniversity of ErciyesKayseriTurkey Department of Horticulture Faculty of AgricultureUniversity of Mustafa KemalHatayTurkey Alata Horticultural Research Institute Erdemli MersinTurkey Ministry of Agriculture and Rural Affair Silifke District Directorate SilifkeMersinTurkey

In this study carried out in 2009 and 2010 growing seasons, effect of rootstocks on plant nutrition partitioning in grafted watermelon onto four gourd rootstocks was investigated. Ferro, RS841 (Cucurbita maxima x C. moschata) and Argentario and Macis (Lagenaria hybrid) were used as rootstocks. Crimson Tide and Crisby watermelon cultivars were used as scion. Grafted and ungrafted seedlings were produced by a commercial seedling company. Plants were grafted by one cotyledon grafting techniques. Experiment was conducted in Alata Horticultural Research Station inMersin. The grafted plants were planted under low tunnel in early spring and regular cultural practices for watermelon were applied. Plant nutrition concentrations were determined in leaf, fruit rind, fruit flesh and seeds. Leaf sample was taken at flowering stage, rind, flesh and seed sample were taken from fully mature fruit. Nitrogen concentration was determined by modified Kjheldahl methods. Phosphorous concentration was determined by vanadomolybdophosphoric acid method. K, Ca, Mg, Fe, Mn, Zn and Cu concentration of samples were determined by atomic absorption spectrophotometry. Plant nutrient concentration in leaf, rind, flesh and seed were significantly affected by rootstocks. Increase in concentration of N, P, K, Ca and Mg in leaves was not observed in grafted plant. Ungrafted plant had higher concentration of Fe, Mn, Zn and Cu in their leaves. Ca concentration in rind of fruits from grafted watermelon was higher than ungrafted control plant except Crimson Tide/Macis and Crimson Tide/Argentario graft combinations. Plant nutrition content of fruit flesh was significantly affected by rootstocks and scion. Magnesium, Fe, Zn and Mn concentration of seed was not significantly influenced by rootstocks and scion while other plant nutrient content was significantly affected rootstocks and scion.

关键词： Watermelon Grafting Rootstocks Plant Nutrition Partitioning

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