Indian Society of Genetics & Plant Breeding

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COMBINING ABILITY ANALYSIS OF PHYSIOLOGICAL AND ECONOMIC TRAITS IN BREADWHEAT (TRITICUM AESTIVUM L.) OVER ENVIRONMENTS

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Combining ability analysis of physiological and economic traits was conducted involving
nine diverse parents ofbreadwheatin all possible combinations excluding reciprocals.The
mean squares for both general combining ability (gca) and specific combining'ability (sea)
were significant for all the characters studied in each analysis. This indicated the
involvement of both additive and nonadditive gene actions in the inheritance of characters.
In general,. high magnitudes of gca variance depicted the greater importance of additive
gene action in the inheritance of traits under study. The environment played a significant
role in the expression of almost all the traits. The gca x year interaction exhibited greater
sensitivity in most cases except net assimilation rate, biological yield, and grain yield than
sea x year interaction. Cvs. Lok-1 and WH 147emerged as desirable general combiners.The
crosses, Sonalika X HD 2402, Sonalika X J 405, Sonalika X K 8470, HUW 234 X JWJ 80-4, HI
1148 X Lok-1, and WH 147 x K 8470 were the most desirable specific combinations for grain
yield and other physiological and economic traits.
 

Keywords: Combining ability, breadwheat, physiological traits, economic traits

Info

Year: 1992
Volume: 52
Issue: 4
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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