Assessment of genetic parameters in F5 recombinants derived from Indica rice (Oryza sativa L.) line Pusa 6APantnagar Journal of Research, Volume - 18, Issue - 3 ( September-December, 2020)
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Availability of superior restorer lines is prerequisite for hybrid rice development. The present study was conducted on half-sib recombinants in F5 generation derived from the scented rice CMS line Pusa 6A, in order to isolate promising restorer lines. Fifty-one such recombinants were evaluated along with 5 check varieties in an Alpha-lattice design during 2019 and observations were recorded for 13 agro-economically important traits. Results of the phenotypic assessment of the genotypes revealed that genotypic coefficient of variance and phenotypic coefficient of variance were moderate to high for different traits used in the study, whereas environmental coefficient of variance was found to be low. The study revealed high heritability coupled with high genetic advance as per cent of mean for important phenotypic traits. It could be effectively used for selection of promising genotypes for better genetic gain in the next generations.
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