Halil SÜREK, Rasim ÜNAN, Necmi BEŞER, Recep KAYA, Adnan KARA

Yabancı Ot İlaçlarına Dayanıklı Bazı Çeltik (Oryza sativa L.) Genotiplerinin Geliştirilmesi

Bu çalışmanın amacı, çeltik tarlalarında sorun olan, kırmızı çeltik ve konvansiyonel çeltik yabancı ot ilaçlarına direnç gösteren yabancı otları kontrol etmek için, IMI (Imidozolinone) gurubu yabancı ot ilaçlarına dayanıklı çeltik çeşitleri geliştirmektedir. Bu araştırma, 2007 ve 2014 yılları arasında yürütülen 8 yıllık bir çalışmanın sonucunu içermektedir. Çalışmaya 2007 yılında, Trakya Tarımsal Araştırma Enstitüsünde, IMI gurubu yabancı ot ilaçlarına dayanıklı bir çeşit ile ticari çeltik çeşitleri arasında gerçekleştirilen 13 kombinasyon melez yapımı ile başlanmıştır. Bu melez kombinasyonları kullanılarak, bir ıslah çalışması gerçekleştirilmiştir. Melez kombinasyonlarından elde edilen popülasyonların seleksiyonunda, modifiye edilmiş bulk metodu kullanılmıştır. Bunun için F2’de ekim ve hasat bulk şeklinde yapılmış ve F3’de hasatta tek bitki seleksiyonuna başlanmıştır. Çalışmalar sonucunda; 2011 yılından itibaren durulmuş saf hatlar elde edilmeye başlanmıştır. Elde edilen hatlar, 2012 yılından itibaren, Trakya Tarımsal Araştırma Enstitüsü deneme tarlasında, tesadüf blokları deneme deseninde, üç tekerrürlü olarak verim denemelerine alınmaya başlanmıştır. Denemelerde agronomik ve teknolojik özellikler bakımından gözlem ve değerlendirmeler yapılmıştır. 2014 yılı sonunda, elde edilen sonuçların değerlendirilmesi sonucu, IMI yabancı ot ilaçlarına dayanıklı 5 ümit var hat, tescile aday gösterilmiştir. Bunlardan ikisine, 2014 yılının aralık ayında üretim izni alınmıştır. Bu hatlar, çeltik verimi, agronomik ve teknolojik özellikler bakımından Türk üreticisi ve tüketicisinin beğenisini kazanacak seviyededirler.

Anahtar Kelimeler:

Çeltik (Oryza sativa L.), imidazolinone herbisit, IMI çeltik çeşidi

Developing Some Herbicide Resistant Rice (Oryza sativa L.) Genotypes

The objective of this study was to develop IMI (Imidazolinone) group herbicide resistant rice varieties to control weedy rice (red rice) and the weed gained resistance against conventional rice herbicides in the rice fields. A resistant rice variety to IMI group herbicide was provided from abroad and it was utilised as resistance source in this study. This variety was crossed with Turkish commercial rice varieties at Trakya Agricultural Research Institute in 2007 and thirteen cross combinations were obtained. Some segregating material were created and the modified bulk selection method was practiced for the selection, for this the planting and harvesting were done as bulk at F2 generation and the harvesting was practiced as single plant selection at F3 generation. After selection the pure lines, they were tested in observation nursery, preliminary yield and yield trial, respectively. The yield trials were conducted in randomised complete block experiment design with three replications. Some selected IMI rice lines were tested in the yield trials in 2013 and 2014. Five of them had good performance in term of rice yield, agronomic and quality traits. They were nominated for registration as commercial varieties in the end of 2014. At the same time, the production permission was taken two of them, under the name of IMI 2521 and IMI 2554.

Keywords:

Rice (Oryza sativa L.), IMI rice variety, imidazolinone group herbicide,

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