ENVIRONMENTAL EFFECT ON BIOTIC STRESS AND RESPONSE OF BREAD WHEAT (TRITICUM AESTIVUM L.) GENOTYPES UNDER RAINFED CONDITION
Published: 18 Sep 2021
Abstract: Wheat is one of the most important crops in the world with the largest production of any crop owing to its ability to adapt to environmental conditions. Bread wheat, a major cereal crop, is subject to several biotic stresses. These stresses affect the crop’s yield, quality and yield components. Different mechanisms have been adopted by plants to counter the wide range of biotic and abiotic stresses faced. Leaf rust (Puccinia triticina), stripe rust (Puccinia striiformis f. sp. tritici), septoria leaf blotch (Septoria tritici), and powdery mildew (Blumeria graminis f. sp. tritici) are mainly and widespread imported diseases of wheat in the Trakia region, Turkey. This research was established with 25 genotypes in RCBD with 4 replications, and four environments in the Trakia region, in the 2017-2018 growing seasons. According to the result, there were significant differences among genotypes for yield and biotic stress factors. The mean yield of the genotypes was 6161 kg ha-1, the highest yield was determined in G21 (6807 kg ha-1) and Köprü (6776 kg ha-1). The lowest infection was observed in the Keşan location. G9 highly was tolerant or highly resistant to leaf rust across four environments. Genotypes G17, G19, and G24 were highly tolerant to LR showed 0-TR reaction across four environments. It was no observed any stripe rust infection in ten genotypes, and six genotypes showed a 0-TR reaction. Because of the lowest infection, there was almost no negative association between grain yield and leaf rust in Edirne and Keşan location but in Tekirdağ and in Lüleburgaz location there was a slightly negative relationship between grain yield and leaf rust. Stripe rust infection was low due to unfavourable environmental conditions and it was not observed in ten genotypes. G7 was tolerant to septoria leaf blotch and four genotypes (G7, G18, G19 and G25) were highly tolerant to powdery mildew across four environments under rainfed conditions.
Keywords: bread wheat, genotypes, environment effect, biotic stress, grain yield
Cite this article: İrfan Öztürk, Banu Tülek, Adnan Tülek, Kadir Akan, Remzi Avci. ENVIRONMENTAL EFFECT ON BIOTIC STRESS AND RESPONSE OF BREAD WHEAT (TRITICUM AESTIVUM L.) GENOTYPES UNDER RAINFED CONDITION. Journal of International Scientific Publications: Agriculture & Food 9, 55-64 (2021). https://www.scientific-publications.net/en/article/1002142/
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