Friday, March 11, 2011

Heritability and genetic variability in Oryza sativa x O. rufipogon cross

Analysis of heritability and genetic variability of agronomically important traits in Oryza sativa x O. rufipogon cross

Heritability is a measure of possible genetic advancement under selection. Estimation of variance components could imply partitioning of genetic variability over different sources of variation. This article describes statistical methods applied and some of the observations made on results of heritability and analysis of environmental variances of grain yield and related traits of progenies derived from a cross between wild and cultivated rice. The study shed light on the genetic information of grain yield and related traits such as their heritability, genetic and environmental effects in the F1 progenies of a cross between O. sativa and O. rufipogon. A considerable amount of additive genetic variation was found in these families. The traits with high heritability, considerable phenotypic correlation and low seasonal variability can be used in further improvement of the F1 progenies. The results obtained were highly promising and can be utilized to develop new rice cultivars.

Published in:
Agronomy Research 7(1), 97-102, 2009

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