Indian Society of Genetics & Plant Breeding
THE importance of evaluating heritability for predicting genetic advance in a
character through selection is now well recognized and several workers have
obtained estimates of this parameter in different species of plants. In estimating
heritability, it is often assumed that the interaction between genotype and
environment is negligible. Thus, the estimates obtained sometimes lead to
failure of prediction as little is known about the level and nature of this interaction. Recently, Comstock and Robinson (1952), Johnson, Robinson, and
Comstock (1955), Nei and Syakudo (1957), Nei (1960) and others have
emphasized the importance of evaluating the interaction between genotype and
year or location, and showed how the prediction of genetic advance is biased by
such interactions. There is an apparent need to conduct more extensive investigations on the role of genotype-environment interaction in various crop plants
with a view to account for the interaction component of variance while utilizing
heritability for the prediction of genetic advance.
Year: 1966
Volume: 26
Issue: 2
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906
GIAN SINGH and D. S. ATHWAL info_circle
Download PDF