The determination of nematode tolerance and seedling performance of the selected almond (Prunus amygdalus L.) genotypes in Keciborlu region of Isparta province
2015
Kızıltan, M.F.
In the present study, selected almond genotypes in Keciborlu/Isparta region by Yıldırım (2007) based on late blooming and superior nut chacteristics were used to evaluate seedling growth performances and the reaction to root knot nematodes. Seeds were planted on perlite medium and stored 60 days at +4 0C in order to break seed dormancy. After germinating, Seedlings were transferred to plastic pods to evaluate seedling growth characteristics and remaining seedlings were inoculated with M. javanica and M. incognita in order to asses resistance status of the selected seedlings. The highest germination percentage was obtained from genotype 54 (96.10 %), the highest plant was observed from genotype 9 (62.18 cm), the longest primary root was found from genotype 54 (30.28 cm), the average secondary root lenght was highest in genotype 9 (31.04 cm) and the widest root collar was observed in genotype 33 (8.38 mm). Seedling stem diameter changed between 4.76 mm (genotype 40) to 7.67 mm (genotype 33). The lowest variation for stem widht was observed in genotype 55 (0.58 %) while the lowest variation for seedling hight was found in genotype 33 (0.50 %). Evaluated almond genotypes showed different reactions to studied nematode species, M. javanica and M. incognita. Resistant reactions of almond genotypes to nematode species were classified as susceptible, tolerant and resistant based on gal index values. genotype 9 and 31 classified as tolerant to M. javanica while genotype 54 classified as resistant to M. incognita.
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