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Research Paper | July 1, 2013

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Study relationship of drought tolerance indices in wheat (Triticum aestivum) genotypes

S. A. Tabatabaei

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Int. J. Biosci.3(7), 15-22, July 2013

DOI: http://dx.doi.org/10.12692/ijb/3.7.15-22

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Abstract

Drought is a wide-spread problem seriously influencing wheat (Triticum aestivum) production and quality, but development of resistant cultivars is hampered by the lack of effective selection criteria. The objective of this study was to evaluate the ability of several selection indices to identify drought resistance cultivars under drought stress conditions. Eight wheat cultivars (Triticum aestivum) were chosen for the study based on randomized complete block design with three replications in the greenhouse. The resulting of this study showed that the breeders should choose the indices on the basis of stress severity in the target environment; GMP, HARM, MP and STI were suggested as useful indicators for wheat breeding and on basis of this index genotypes 2022, Alvand and 2021 introduced as tolerant genotypes. The best indices for selecting tolerant species were GMP, HARM, MP and STI. Therefore genotypes which had higher amount of these indices identified as the most tolerant genotypes.

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Study relationship of drought tolerance indices in wheat (Triticum aestivum) genotypes

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