Evaluation of Chitti Bean Genotyps to Drought Stress Using Stress Tolerance Indices

	Evaluation of Chitti Bean Genotyps to Drought Stress Using Stress Tolerance Indices
نهال و بذر
Article 10, Volume 27, Issue 4, December 2011, Pages 615-630 PDF (309.51 K)
DOI: 10.22092/spij.2017.111085
Authors
B. Assady^* ; H. R. Dorri; A. Ghadiri
Abstract
To identify the drought tolerant genotypes of chitti bean, an experiment was conducted in Bean Research Station of Khomein in 2007. One hundred Chitti bean genotypes were evaluated in an augment design with three controls under irrigation and drought stress conditions. Irrigations in normal and drought stress conditions were applied after 50 and 100 mm evaporation from class A tank. The results showed that drought stress decreased the yield of genotypes up to 41.16 percent. Drought tolerance indices namely arithmetic mean (MP), geometric mean (GMP), stress tolerance (STI), stress susceptibility (SSI) and tolerance were calculated. Based on the correlation between drought stress indices and yield in two conditions, STI and SSI were found to be the best indices to identify tolerant genotypes. genotypes KS21181, KS21247, KS21212, KS21216, KS21189 and KS21191 were identified as drought tolerant using biplot, SSI, GMP and other indices.
Keywords
Chitti bean; Drought Stress; drought tolerance indices

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