Author: Prasanta Kumar Majhi
M. Sc. (Agri.), Junior Research Scholar, Department of Genetics and Plant Breeding, College of Agriculture, UAS, Dharwad, Karnataka, India.
â€¢ The heritability of a metric character is one of the most important properties. It is the proportion of total variance that is attributable to the average effects of genes and this is what determines between relatives the degree of resemblance between relatives.
â€¢ It expressing the reliability of the phenotypic value as a guide to the breeding value. Only the phenotypic value of the individual can be directly measured, but it is the breeding value that determines their influence on the next generation.
â€¢ Therefore, if the breeders or experimenters choose individuals to be parents according to their phenotypic value, his success in changing the characteristics of the population can be predicted only from the knowledge of the degree of correspondence between phenotypic value and breeding value. This correspondence measured by the heritability.
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