Moleküler ıslah yöntemleri kullanılarak tospovirus ve tobamoviruslere dayanıklı yeni dolmalık biber ( capsicum annum l.) hat ve çeşitlerinin geliştirilmesi

Biber yetiştiriciliğinde biber hafif benek virüsü (PMMoV), tütün mozaik virüs ü (TMV) ve Domates Lekeli Solgunluk Virüsü (TSWV) ana sınırlayıcı faktörlerdendir. Günümüzde üretim sahası ve zamanına bağlı olarak en az iki ve ya daha fazla hastalık ve de zararlı etmen e karşı dayanıklılığ ı ihtiyaç duyulmaktadır. Bu çalışmada PMMoV, TMV ve TSWV gibi bazı hastalıklara dayanıklılığa bağlı olarak geliştirilmiş L3, L4 ve Tsw alleleri ile ilişkili moleküler markırlar yardımıyla söz konusu virüslere dayanıklı biber hat ve çeşitlerinin geliştirilmesi amaçlanmıştır. Bu amaç için markır yardımlı g eriye melezleme ve/veya kendileme ile elde edilen 3890 adet dolmalık biber bitkisi söz konusu markırlarla testlenmiş ve hem dayanıklı hem de agronomik olarak üstün olan 72 adet hat ebeveyn olarak belirlenmiştir. Bu hatlar içerisinden her 3 dayanıklılık allelini taşıyacak şekilde 78 adet melez yapılmış ve bu melezler arasından 1 tanesi aday çeşit olarak belirlenmiştir. Bu çalışma, moleküler ve klasik ıslah yöntemleri birlikte kullanılarak biberde PMMoV, TMV ve TSWV gibi hastalıklara dayanımlı çeşit geliştirilebileceğini göstermektedir.

Development of new bell pepper (capsicum annum l.) lines and cultivars resistance to tospovirus and tobamovirus u sing molecular breeding methods

Pepper mild mottle virus (PMMoV), Tobacco Mosaic Virus (TMV) and Tomato Spotted Wild Virus (TSWV) are main limiting factor in pepper production. Nowadays, it is needed to at least two or more resistance to disease agents according as production area and season. In this study, it was aimed to develop PMMoV, TMV and TSWV resistance pepper line and cultivars using molecular markers which developed as linked to L3 , L4 and Tsw allele s which provide resistance to these virus. For this aim, 3890 bell pepper lines which developed using backcrossing or selfing was tested and determined 72 lines as parents which resistant and were also sup erior with regard to agronomic traits . Seventy eighty crosses which consist three resistance alleles together in one hybrid genotype were done between 72 pepper lines and one of cross es was determined as candidate cultivar. This study showed that it can b e developed resistance cultivars to viruses such as PMMoV, TMV and TSWV using molecular and classic breeding methods together in pepper breeding program.

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