Indian Society of Genetics & Plant Breeding

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VARIABILITY AND COHERITABILITY ESTIMATES FOR PHYSIOLOGICAL AND ECONOMIC ATTRIBUTES IN SOYBEAN

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Twenty six divergent genotypes of soybean (Glycine max (L.) Merrill.) were used to estimate
the variability and coheritability for physiological and economic attributes. The variability
in vegetative and reproductive phases and 1oo-seed weight appeared mainly due to
genotypic differences. High heritability estimates were recorded for vegetative and
reproductive phases, crop growth rate, and 1OO-seed weight. Both additive and nonadditive
gene effects were important in the inheritance of net assimilation rate, crop growth rate,
100-seed weight, biological yield/plant, and seed yield/plant, whereas nonadditive gene
effect was found important for remaining traits. Bioloigical yield and pods/plant, harvest
index and duration of reproductive phase exhibited substantial coheritability estimates
with seed yield. -
 

Keywords: Variability, coheritability, physiological attributes, economic attributes.

Info

Year: 1994
Volume: 54
Issue: 2
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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