2006•Unpublished venueRequires access
Heterosis and combining ability for grain yield and its components in sorghum [Sorghum bicolor (L.) Moench]
N. Premalatha, N. Kumaravadivel, P. Veerabadhiran
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Abstract
A study was conducted to estimate heterosis in F1 hybrids
of sorghum [Sorghum bicolor (L.) Moench] with respect
to grain yield and its components using thirty-six hybrids.
The hybrids and their parents were evaluated to assess
the combining ability and gene action governing the
quantitative traits. Among the hybrids, CSV 15 x SPV
1521 recorded maximum grain yield with 90, 86.89 and
33.45 per cent heterosis over the mid parent, better parent
and standard check respectively. This cross found to be
superior in terms of days to 50 percent flowering, plant
height, number of grains per panicle and grain yield per
plant. It was followed by CSV 15 x SPV 1531, CO 26 x
SPV 1531 and CO(S) 28 x SPV 1531. The estimates of
general combining ability and specific combining ability
revealed the presence of non-additive gene action for all
the traits under study.