Vol. 7, Issue 6 (2019)
Genetic evaluation of rice restorer lines through variability, heritability and genetic advance analysis
Author(s): Shweta Tiwari, GK Koutu and Yogendra Singh
Abstract: Restorer lines of rice are utilized in hybrid breeding programme to meet the demand of growing population by enhancing the productivity through assessment of variability. With the aim of determining the genetic parameters of variability, the present investigation was carried out among 90 genotypes of rice plotted in randomized block design under rice improvement project at seed breeding farm, JNKVV, Jabalpur during Kharif season 2018. The 21 quantitative and 8 quality traits were observed and revealed significant difference among them through analysis of variance. Superior genotype ANP 526 based on mean yield, CBSN 168 based on quality parameters and PRR 828 based on fertile and total spikelet per panicle. The narrow magnitude of difference between GCV and PCV indicated efficient selection as less influenced by environment. The high estimate of GCV and PCV showed scope of improvement through direct selection and high heritability with high genetic advance expressed simple inherited trait along with preponderance of additive gene action. Thus, total spikelet per panicle, fertile spikelet per panicle, and spikelet density percentage were found to be high in almost all genetic parameters of variability such as mean, range, genetic advance, GCV and PCV, which could be considered in future rice breeding programme for obtaining better restorer. While, lowest GCV and PCV was exhibited for traits hulling percentage, milling percentage and head rice recovery percentage indicates need of creation of variability. None of the traits exhibited low heritability. High heritability coupled with high genetic advance was high for trait total spikelet per panicle, fertile spikelet per panicle and spikelet fertility percentage indicates that these characters are largely controlled by additive gene action, and improvement is possible through mass selection and progeny selection.
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How to cite this article:
Shweta Tiwari, GK Koutu, Yogendra Singh. Genetic evaluation of rice restorer lines through variability, heritability and genetic advance analysis. Int J Chem Stud 2019;7(6):1934-1937.
