Morphological characterization and assessment of genetic parameters of NERICA mutant rice lines under rainfed condition

Abstract

, 100-seed weight (g) and yield plant -1 (g).N 1 /300/P-9-5 had maximum yield plant -1 and N 4 parent had minimum yield plant -1 . All the parental lines showed less yield compared to other mutant lines. The phenotypic coefficient of variations (PCV) were higher than genotypic co-efficient of variations (GCV) for all the traits studied indicating that they all interacted with the environment to some extent. All the traits studied expressed moderate to high heritability estimates ranging from 43.68 to 92.87%. High heritability along with high genetic advance was noticed for the traits, number of filled grains panicle -1 , number of unfilled grains panicle -1 and plant height.

Genetic Divergence and Heritability Study of Some NERICA Mutant Lines and Their Parents Using Microsatellites Marker and Morphological Traits in Rice

“…In our study, yield per plant, unfilled grains per panicle, number of total tiller, number of effective tiller showed high heritability and genetic advance as percent of the mean value. Similar result in the study of NERICA mutant lines was also observed by [34,31]. On the other hand, [41] found high heritability and genetic advance as percent of the mean value for yield per plant and [42] found high heritability and genetic advance as percent of the mean value for unfilled grains per panicle.…”

“…During drought stress fertile tiller number induce approximate 86% of yield changes and hence it is a vital yield attributing character [33]. Moreover, panicle length is also considered an important character as higher panicle length could provide higher grain number [34]. The highest panicle length (29.6 cm) was found in N10/300/P-2-3-5-2 and the lowest (21.6 cm) in N10/300/P-2-3-5-1 mutant genotype with an average of 25.89 ±0.473.…”