Defining Selection Indices for Drought Tolerance in Chickpea Under Terminal Drought Stresses
In order to assess the drought stress indices in chickpea elite lines, forty-nine genotypes were evaluated using an incomplete block arrangement in two well watered and deficit irrigation conditions including 60 and 120 mm evaporation based on class A pan at the Northern Khorasan Rain- Fed Research Station. Different phonological and morphological traits, as well as yield and its components were recorded. Analysis of variance indicated significant differences among the genotypes. The results of drought stress indices and biplot analysis suggested that genotypes SEL93TH24469, FLIP 01-64C and FLIP 98-38C were the most tolerant lines and FLIP 93-255C was the most susceptible one. Biplot analysis also showed that HARM, GMP, STI and MP selection indices were the best to identify drought tolerant genotypes. Cluster analysis separated the genotypes into three groups. Genotypes in cluster II had highest tolerance to drought stress.
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