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Rahmatollah Karimizadeh, Tahmasp Hosseinpour, Peyman Sharifi, Jabar Alt Jafarby, Kamal Shahbazi, Kavoos Keshavarzi,
Volume 8, Issue 1 (8-2021)
Abstract

Durum wheat (Triticum turgidum L.), like most other crops, is affected by various stresses. Therefore, cultivars that, in addition to the ability to produce higher yields, can maintain their yield potential in different years and locations are considered superior cultivars. In order to obtain high-yielding and stable genotypes of durum wheat, 16 lines with two control cultivars Dehdasht and Seymareh were evaluated in four locations of Gachsaran, Gonbad, Khorramabad and Moghan based on randomized complete block design with four replications in three cropping seasons (2013-2016). Combined analysis of variance indicated a significant effect of genotype, environment and genotype by environment interaction. Genotypes G6 and G18 had the highest and lowest grain yield, respectively. Based on parametric methods, genotypes G3, G5, G15, G13 and G16 and based on non-parametric methods, genotypes G1, G3, G4, G5, G15 and G3 were the most stable genotypes. The most stable genotypes based on the total Kang sum-rank were genotypes G15, G5, G6 and G1. The Selection index of ideal genotype (SIIG) was used to integrate all indices into one index, based on which genotypes G5 and G15 were the superior genotypes with the highest SIIG index and grain yield. Based on all indices, genotypes G5 and G15 were the most stable genotype in terms of grain yield and can be used in cultivar introduction processes.


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