Buğday çeşitlerinin Pratylenchus thornei Sher & Allen, 1953 ve Pratylenchus neglectus (Rensch, 1924) (Tylenchida: Pratylenchidae)’a karşı konukçu uygunluğu

Öz

Kök yara nematodları (RLN), Pratylenchus thornei Sher & Allen, 1953 ve Pratylenchus neglectus (Rensch, 1924) (Tylenchida: Pratylenchidae) dünya genelinde buğday yetiştiriciliğinde ekonomik ürün kayıplarına neden olan önemli bitki paraziti nematodlarıdır. Dayanıklı ve tolerant çeşit kullanımı bu nematodlar ile mücadelede en etkin metot olarak bilinmektedir. Günümüzde, RLN türlerine karşı tamamen dayanıklı ticari herhangi bir çeşit yoktur. Bu çalışmada 19 adet yazlık buğday çeşidinin kontrollü koşullarda 16 hafta süreyle P. thornei ve P. neglectus’a karşı reaksiyonları 2019 yılında değerlendirilmiştir. Çalışma sonucunda Adana99, Ata89, Bürküt, Cumhuriyet75, Gönen98, Marmara86, Meta2002, Troya ve Uludağ’ın içinde olduğu dokuz buğday çeşidi P. thornei’ye karşı orta dayanıklı, buna karşın Adana99, Alibey, Ata89, Ceyhan99 ve Uludağ’ın içinde olduğu beş buğday çeşidi P. neglectus’a karşı orta dayanıklı bulunmuştur. Ayrıca çalışmada Adana99, Ata89 ve Uludağ'ın her iki nematod türüne dayanıklılık gösterdiği ve bu çeşitlerin RLN'e karşı dayanıklı ticari buğday çeşitleri geliştirmek için oldukça iyi dayanıklılık gen kaynakları olduğu düşünülmektedir.

Anahtar Kelimeler

• Pratylenchus neglectus
• Pratylenchus thornei
• dayanıklılık
• kök yara nematodu
• buğday

Host suitability of wheat cultivars to Pratylenchus thornei Sher & Allen, 1953 and Pratylenchus neglectus (Rensch, 1924) (Tylenchida: Pratylenchidae)

Abstract

Root lesion nematodes (RLNs), Pratylenchus thornei Sher & Allen, 1953 and Pratylenchus neglectus (Rensch, 1924) (Tylenchida: Pratylenchidae) are important plant-parasitic nematodes that cause economic yield losses in wheat cropping systems worldwide. The use of resistant and tolerant cultivars is the most effective method to control these nematodes in wheat. There are currently no commercial wheat cultivars identified as completely resistant to the RLN species. The aim of this research was to evaluate 19 Turkish spring wheat cultivars for reaction to P. thornei and P. neglectus under in-vitro conditions over 16 weeks in 2019. In the result of the study, nine wheat cultivars (Adana99, Ata89, Bürküt, Cumhuriyet75, Gönen98, Marmara86, Meta2002, Troya and Uludağ) were found to have moderate resistance against P. thornei, whereas five wheat cultivars (Adana99, Alibey, Ata89, Ceyhan99 and Uludağ) were moderately resistant to P. neglectus. The study also showed that Adana99, Ata89 and Uludağ are resistant to both nematode species, and these cultivars, thus, are considered to be excellent sources of genes for further development RLN resistant commercial wheat cultivars.

Keywords

• Pratylenchus neglectus
• Pratylenchus thornei
• resistance
• root lesion nematode
• wheat

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