PJB-2017-925
ASSESSMENT OF GENETIC VARIABILITY OF YIELD RELEVANT TRAITS IN PUTATIVE EMS MUTANTS OF SUPER BASMATI
kiran Hameed
Abstract
Genetic diversity in agronomic important traits is prerequisite for the genetic improvement of crop plants. The generation and phenotypic characterization of mutants are helpful to select genotypes with improved agronomic traits. The present study was planned to evaluate the genetic diversity among mutants for their agronomic important traits in first and second mutagenic generation of super basmati against ethyl methane sulphonate treatments. Data recorded at maturity were statistically concluded using principal component analysis under nine different parameters (number of spikelet/plant, tiller/plant, panical length, yield/plant, 100 peddy weight, plant height, peddy length, peddy width and peddy length width ratio). The results showed that number of spikelet/plant, yield/plant, tiller/plant and 100 peddy weight demonstrated the highest variation in both mutagenic generations of super basmati. Significantly correlation and the greatest contribution in total variability were existed among number of spikelet/plant, tiller/plant and plant height during both mutagenic populations of super basmati. First two principle component of bi-plot explained 52.62% and 54.50% of total variance in first and second mutagenic population of super basmati respectively. It is concluded that ethyl methane sulphonate treatments up to 1.5% might be initiated a considerable level of genetic diversity in mutant lines of super basmati. This genetic diversity should be used for advance study for selection of rice mutant genotypes in mutation breeding program.
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