Evaluation of Genetic Variability, Heritability and Genetic Advance for Yield and Yield Components in Rice Genotypes

Genetic Variability, Heritability and Genetic Advance Studies on Yield, Its Components, Quality Traits and Gall Midge Incidence in Rice (Oryza sativa L.)

“…The percentage of gall midge incidence, the number of productive tillers per plant, the number of filled grains per panicle, and grain yield per plant showed higher phenotypic and genotypic coefficients of variation indicating the presence of a high degree of variation for these traits among the genotypes which could be improved through selection in a desirable direction. These results are in agreement with the findings obtained by Thippaswamy et al [23] and Siddi et al [19] for Gall midge incidence, Mohan et al [24] and Subhas Chandra Roy and Pankaj Shil [22] for the number of filled grains per panicle, Allam et al [25], Ajmera et al [26] and Ram et al [27] for grain yield. Ajmera et al [26] and Siddi et al [19] reported the same for the number of productive tillers.…”

“…These results are in agreement with the findings obtained by Thippaswamy et al [23] and Siddi et al [19] for Gall midge incidence, Mohan et al [24] and Subhas Chandra Roy and Pankaj Shil [22] for the number of filled grains per panicle, Allam et al [25], Ajmera et al [26] and Ram et al [27] for grain yield. Ajmera et al [26] and Siddi et al [19] reported the same for the number of productive tillers.…”

“…In contrary to this, Mohan et al [24] and Srinivas et al [30] reported high GCV and high PCV values for 1000 grain weight. Dhanwani et al [31] and Ajmera et al [26] reached similar conclusions in their reports. For Plant height, moderate levels of PCV and GCV were observed, and these results are contrary to Dhanwani et al [31] who showed high GCV and PCV values.…”

Characterization of the Genetic Variability in Rice (Oryza sativa L.) and its Assessment Using Principal Component Analysis (PCA)

“…It indicates partially genetic gain by selection. Similar kind of results were found by [21] for days to 50% flowering and [19] for days to maturity.…”

The performance of agronomic traits, genetic variability, and correlation studies for yield and its components in some red rice (Oryza sativa) promising lines

“…The genetic advance helps quantify the amount of improvement that might be expected with selection in a character, while heritability measures the relative amount of the heritable portion of variance (Bello et al 2012;Khan et al 2016;Keerthana et al 2019). Genetic advance is a valuable measure of the progress that can be expected from selecting the relevant population (Reddy et al 2013;Islam et al 2015;Ajmera et al 2017;Terfa and Gurmu 2020). Heritability combined with genetic advance would provide a more accurate index of selection value (Senapati et al 2013;Oladosu et al 2014;Huda et al 2018).…”