Variability and correlation studies on yield and yield components in induced plant type mutants of rice

Basak, A.K.; Ganguli, P.K.

Indian Agriculturist 40(3): 171-181


ISSN/ISBN: 0019-4336
Accession: 003330245

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Genetic variability correlation coefficients were studied on yield and yield component characters in a set of gamma-radiation induced mutant lines of scented local rice cultivar ([Oryza sativa] var. Tulaipanja) in two successive generations (M4 and M5) during kharif. High genetic advance as % of mean combined with high genotypic coefficient of variation (GCV) and high heritability were recorded for number of filled grains per panicle, number of tillers and panicles per plant in M4 generation and number of spikelets per panicle, panicle exsertion, 1st leaf angle, 2nd leaf angle, flag leaf angle and area of flag leaf in M5 generation. The genotypic correlations, in general, were higher than the corresponding phenotypic correlation coefficients. The estimates of genotypic and phenotypic correlation coefficients between number of filled grains per panicle and harvest index showed strong positive association with grain yield in both M4 and M5 generations.