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Title

EVALUATION DROUGHT STRESS TOLERANCE AND SENSITIVITY INDICES AND THEIR RELATION WITH GRAIN YIELD ON ADVANCED WHEAT GENOTYPES AT ARDABIL REGION

Pages

 Start Page 13 | End Page 20

Abstract

 In order to evaluation DROUGHT STRESS tolerance and sensitivity indices and their relation with grain yield on advanced WHEAT GENOTYPES under normal and water stress after anthesis, this experimental carried out at agronomy and natural research station of Ardabil in 2008-2009. Ten advanced winter and intermediate WHEAT GENOTYPES obtained from agronomy and natural research center Ardabil were evaluating in two separated experiment under normal irrigation and after anthesis DROUGHT STRESS condition in a randomized complete block design experiment with three replications. The highest and lowest grain yields (6093.3 and 4819.4 Kg per hectare) were obtained by normal and water stress conditions, respectively. The lowest value of stress sensitivity index was belonged to 7 No genotype and follow that were 6 and No genotypes. There has negative and significant correlation between SSI with yield potential stress (Ys) and negative relation with yield potential normal (Yp). Genotypes with 6 number with 10 No genotypes have the highest value of Stress tolerance index. Between this index with Yp and Ys were positive and significant correlations. Also relative between SSI AND STI was negative. In based of result obtain, STI, MP and GMP were sufficient indices for selection DROUGHT STRESS tolerant WHEAT GENOTYPES.

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