Evaluation ofpost-anthesis drought stress in winter and facultative wheat (Triticum aestivum L.) genotypes in preliminary yield trial in cold
2011
Yazdansepas, Amir | Babaie, Taghi | Qavidel, Naser | Navidazar, Rasoul | Sheykhi, Moslem
Iran is located in arid and semi-arid region of the world. Because of low average rainfall in the country, improvement of wheat cultivars tolerant to drought stress is in top priority in breeding programs. This study was conducted to evaluate the tolerance of 95 winter and facultative wheat genotypes to post-anthesis drought stress condition using a systematic design at Karadj and Arak agricultural research stations in 2010/11 cropping season. Comparison of the genotypes and their adaptability were carried out using non-parametric statistic method of ranking. Based on present results 26 genotypes which were better than or were at the level of the check cultivars, were selected as the superior genotypes for further evaluation in advanced yield trial under drought stress (ARWYT-CD90) in 2011/12 cropping season. The range of grain yield of the selected genotypes was between 4453 and 6451 kg ha-l, and their average was 5099 kg ha-l with standard deviation of 474 kg ha-l. Means grain yield of the check cultivars i.e. Oroum, Zareh, Alvand and Mihan were 4611, 4933, 4110 and 4736 kg ha I, respectively and their grand mean was 4597 kg ha-l.
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