Indian Society of Genetics & Plant Breeding

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DIALLEL ANALYSIS FOR COMBINING ABILITY FOR GRAIN YIELD AND ITS COMPONENTS IN BARLEY

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Combining ability analysis was undertaken in 10 x 10 half diallel progenies of barley for
grain yield and its component characters in both Ft and Fz generations. Both additive and
nonac!ditive gene actions were important in controlling the inheritance of all the traits.
However, additive gene action was predominant. The parents BG 105, OL 88, and OL 165
were the best general combiners for grain yield and average to high combiners for other
important traits. The best specific crosses for grain yield were BG 105 X RO 728, BL 2 X BG
105, OL 100 X OL 88 and OL 165 X OL 88, involving parents with medium X high and high
X high general combiners. Exploitation of additive and nonadditive gene actions through
biparental mating and/or diallel selective mating systems is suggested.
 

Keywords: Barley, combining ability, gene action, quantitative traits, heterosis.

Info

Year: 1995
Volume: 55
Issue: 3
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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