Indian Society of Genetics & Plant Breeding

Important

INHERITANCE OF QUANTITATIVE TRAITS IN MAIZE (ZEA MAYS L.) IN WINTER AND MONSOON SEASON

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Twenty eight Fl hybrids were evaluated in four environments each in winter and monsoon
season. Nonadditive gene effects were more important for stem diameterin winter season,
while for other characters additive gene effects were more important. In monsoon season,
nonadditive gene effects were more important for stem diameter and ear leaf area, whereas
for number ofleaves, plantand earheight, and internodal length,additive gene effects were
more important. Gca was less influenced by environment than sca for all the characters in
winter and monsoon seasons. In pooled analysis over seasons, in expression of ear height
nonadditive gene effects was less influenced by seasons, whereas for other traits sea was
more influenced by seasons. The inbred line HI04- 21-4-2-1-2-3 was a good general
combiner for shorter plant height, thicker stem, and more ear leafarea in both seasons. Four
hybrids, namely, J 54 x
J663, B 57-3-2 x H 104-21-4-2-1-2-3, J617-1-1-1-1 x J663,
and
J 6 17-1-1-1-1 x H 104-21-4-2-1-2-3, were good for shorter plant height; J 663 x H
104-21-4-2-1-2-3 was good for larger stem diameter; and PTR xH 57-3-2, Vijay 444-2-4f x
J6
17-61-1-1-1-1 and PTR x H 104-21-4-2-1-2-3 for increased ear leaf area.
  

Keywords: Maize, inbred diallel, combining ability.

Info

Year: 1991
Volume: 51
Issue: 3
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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