Exploring genetic diversity for heat tolerance among lentil (Lens culinaris Medik.) genotypes of variant habitats by simple sequence repeat markers
Publication Overview
Abstract The study was carried out to assess genetic diversity among 119 lentil
genotypes grown in different habitats for heat tolerance using morphophysiological
and reproductive traits and SSR markers. High-temperature
stress was applied at seedling (35/33°C) and anthesis stages (35/20°C) to
study the effects on morpho-physiological and reproductive traits under
hydroponic condition, which was compared with non-stressed and
stressed field conditions. A set of 209 alleles were identified by 35 SSR
markers among the genotypes. Genetic diversity and polymorphism
information content values varied between 0.0494–0.859 and 0.0488–
0.844, with mean values of 0.606 and 0.563, respectively. Genotypes
were clustered into nine groups based on SSR markers. Morpho-physiological
and reproductive traits under heat stress were found to be significantly
different among SSR clusters. These findings suggest that heat
adaptation is variable among the genotypes and the tolerant materials can
be evolved through hybridization using parents from different clusters
with diverse mechanisms of heat tolerance.
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