Genetic assessment of core set developed from short duration rice accessions held by Kerala Agricultural University

Abstract

A subset (core set) of the base collection comprising of 160 short duration rice germplasm accessions held by Kerala Agricultural University, Thrissur was formed based on twenty-four quantitative characters using the Power Core (v.1.0). Assessment of variability for yield and yield attributes in the core set pointed to the existence of high variability among the genotypes. High variability with respect to plant height, culm length, stem thickness, days to heading, leaf blade length, total tillers per plant, productive tillers per plant, panicle length, spikelets per panicle, grains per panicle, test weight of grain, grain length, grain width, straw yield per plant and grain yield per plant indicated good scope for improvement. The genotypic coefficient of variation, heritability and genetic gain estimates were high for all the traits studied, indicating that selection will be rewarding for improvement of these traits.

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