Türler Arası Pamuk Melezlerinde (Gossypium hirsutum L. x Gossypium barbadense L.) Ekonomik Heterosis ve Kalıtımın İncelenmesi

Türler arası melez pamuk populasyonları ile yürütülen ıslah çalışmalarında Gossypium barbadense L.’nin arzu edilen lif özelliklerine sahip ve Gossypium hirsutum L. gibi verimli genotiplerin elde edilmesi amaçlanmaktadır. Bu çalışmada, türler arası melez pamuk populasyonlarında lif kalitesi ve verim için kalıtım ve ekonomik heterosis değerleri incelenmiştir. 12 F1 ve ebeveynleri 2011 ve 2012 yıllarında Nazilli Pamuk Araştırma Enstitüsü Müdürlüğü deneme tarlalarında tesadüf blokları deneme deseninde yetiştirilmiştir. Claudia, Candia, Sahin 2000, BA 308, Naz 07 ve Fantom (Gossypium hirsutum L.) çeşitleri ana, Giza 45 ve Avesto (Gossypium barbadense L.) çeşitleri baba olarak kullanılmıştır. Verim, lif mukavemeti ve lif uzunluğu için eklemeli olmayan gen etkileri eklemeli gen etkilerinden daha büyük bulunmuştur. Lif mukavemeti ve lif uzunluğu bakımından ekonomik heterosis değerleri olumlu ve önemli bulunmuştur. Gözlemlenen özellikler bakımından Candia x Giza 45 melez kombinasyonu ümitvar melez kombinasyon olarak tespit edilmiştir.

Gene Action and Useful Heterosis in Interspecific Cotton Crosses (Gossypium hirsutum L. x Gossypium barbadense L.)

Conducted the breeding researches with interspecific cotton crosses are aimed to obtain genotypes have desired fiber characteristics like Gossypium barbadense L. and have high yields potential like Gossypium hirsutum L. In this study, gene action and useful heterosis were investigated for fiber quality and yield traits in interspecific cotton crosses. The 12 F1 ’s and their parents were evaluated in a Randomized Complete Block Design with four replications at the Nazilli Cotton Research Institute’s fields during 2011 and 2012 cotton growing season. Claudia, Candia, Sahin 2000, BA 308, Naz 07 and Fantom (Gossypium hirsutum L.) were used as a female parents and Giza 45 and Avesto (Gossypium barbadense L.) used as a male parents. Non-additive gene effects for yields, fiber strength and fiber length were greater than additive gene effects. The useful heterosis were positively significant for fiber strength and fiber length. Candia x Giza 45 hybrid was promising hybrid for all observed characters.

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