Türkiye’de Yaygın Olarak Üretilen On Beş Soğan Çeşidinin Leek yellow stripe virus (LYSV)’üne Karşı Reaksiyonları

Abstract

Onion (Allium cepa L.) cultivars commonly cultivated in Turkey were for the first time examined for their reactions to Leek yellow stripe virus (LYSV). Fifteen onion cultivars consisted of red, white, and yellow bulb cultivars were grown in pots and mechanically inoculated with LYSV-12.6Po, a newly characterized Turkish isolate. The experiment was in completely randomized block design with three replicates, containing 30 plants in each. One replicate was also planted as control. Serological and molecular detection methods, and statistical analysis on five growth parameters were used to evaluate their reactions to LYSV. LYSV infections in KG kırmızı, UG beyaz, Şampiyon, Perama, Seyhan, and Hazar were not detected by DAS-ELISA, but RT-PCR gave positive results to LYSV for all 15 tested cultivars. t-test results showed that LYSV inoculation caused significant reduction in all growth parameters for most cultivars. Duncan’s multiple range test found that Anka, UG kahverengi, and KG kahverengi performed badly in all growth parameters. On the other hand, Şampiyon and Perama were not significantly different to each other in all growth parameters, and performed very well in plant weight, plant height, and no. of leaves parameters. Based on results of this study, Şampiyon and Perama were considered as the most tolerant cultivar to LYSV.