Melodidogyne incognita (Kofoid & White, 1919) Chitwood, 1949 (Tylenchida: Meloidogynidae)’nın virülent ve avirülent popülasyonlarına patlıcan genotiplerinin tepkisi

Patlıcan dünyada yaygın bir şekilde yetiştirilmektedir. Bununla birlikte bazı patlıcan genotipleri kök-ur nematodlarına (Meloidogynespp.) karşı duyarlıdır. Bu nedenle Solanum torvum (Sw.)dünyada kök-ur nematodlarına karşı dayanıklı anaç olarak yaygın bir şekilde kullanılmaktadır. Kök-ur nematodlarına dayanıklı yeni patlıcan genetik kaynaklarının araştırılması ıslah için gereklidir. Bu çalışmada yabani kaynaklar, yabani anaçlar, yabani x yabani anaçlar, yabani x kültür formu patlıcan anaçları, kültür formu anaçlar, saf hatlar, standart ticari çeşitler ve ticari hibritler olmak üzere toplam 60 genotip Meloidogyne incognita Kofoid & White, 1919) Chitwood, 1949 (Tylenchida: Meloidogynidae)’nın avirülent S6 ve Mi-1 virülent V14 popülasyonu ile kontrollü koşullar altında testlenmiştir. Çalışma 2016-2017 yıllarında yürütülmüştür. Patlıcan fideleri M. incognita’nın1000 ikinci dönem larvası ile inokulasyon yapılmış ve bitkiler inokulasyondan 8 hafta sonra sökülmüştür. Köklerdeki yumurta ve ur sayıları ile topraktaki larva sayıları sayılmıştır. Solanum torvum (Y28)’un M. incognita’nın S6 ve V14 popülasyonlarına dayanıklı, diğer genotiplerin tümümün ise her iki popülasyona duyarlı olduğu belirlenmiştir. Bu sonuçlar kök-ur nematodlarının kontrolü için yapılacak olan ıslah ve mücadele çalışmalarında kullanılabilir.

Response of eggplant genotypes to avirulent and virulent populations of Meloidogyne incognita (Kofoid & White, 1919) Chitwood, 1949 (Tylenchida: Meloidogynidae)

Eggplant is widely grown throughout the world. However, some eggplant genotypes are susceptible to Meloidogynespp., so Solanum torvum (Sw.)is commonly used as a resistant rootstock for root-knot nematodes. Further investigations of resistant sources to root-knot nematodes are still necessary for breeding programs. In this study, a total of 60 eggplant genotypes, including wild sources, wild rootstocks, wild × wild eggplant rootstocks, wild × cultivated eggplant rootstocks, cultivated eggplant rootstocks, pure lines, standard commercial cultivars and commercial hybrids, were tested with avirulent S6 and Mi-1 virulent V14 populations of Meloidogyne incognita (Kofoid & White, 1919) Chitwood, 1949 (Tylenchida: Meloidogynidae)under controlled conditions. The study was conducted in 2016-2017. The seedlings were inoculated with 1000 second-stage juveniles of M. incognita. Plants were uprooted 8 weeks after nematode inoculation, and the numbers of egg masses and galls on the roots and juveniles in the soil of pots were counted. Solanum torvum (Y28) was found to be resistant to S6 and V14 populations of M. incognita. The remaining genotypes were susceptible to both populations. These results could be used for breeding and management purposes for the control of root-knot nematode.

Keywords:

Eggplant, Meloidogyne incognita resistance, Solanum torvum,

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