Combining ability study in a 6 x 6 diallel cross of maize

The F1 generation of 6 × 6 diallel cross in maize was evaluated for combining ability under irrigated conditions of Dera Ismail Khan, Pakistan. Based on the variance data, general combining ability (GCA) and specific combining ability (SCA) showed the importance of additive gene effect in some chara...

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Published inPakistan journal of scientific and industrial research. Series B: biological sciences Vol. 54; no. 1; pp. 18 - 22
Main Authors Amanullah (Gomal Univ., Dera Ismail Khan (Pakistan). Faculty of Agriculture), Khan, S.J. (Gomal Univ., Dera Ismail Khan (Pakistan). Faculty of Agriculture), Mansoor, M. (Arid Zone Research Inst., Dera Ismail Khan (Pakistan))
Format Journal Article
LanguageEnglish
Published 01.03.2011
Subjects
COMBINING ABILITY
CROP YIELD
DIALLEL ANALYSIS
EVALUATION
F1 HYBRIDS
VARIETIES
YIELD COMPONENTS
ZU CRISTATUS
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Summary:The F1 generation of 6 × 6 diallel cross in maize was evaluated for combining ability under irrigated conditions of Dera Ismail Khan, Pakistan. Based on the variance data, general combining ability (GCA) and specific combining ability (SCA) showed the importance of additive gene effect in some characters under study like kernel rows/ear, kernels/row, kernels/ear, 1000 grain weight and grain yield. The results showed that F1 mean squares due to GCA were highly significant for all the parameters under observation. Higher magnitude of GCA components of variance (%) for kernels/ear, 1000 grain weight and grain yield, indicated predominance of additive and additive type of gene action while for kernel rows/ear, and kernels/row, nearly equal importance of both additive and non-additive gene effects were observed. The estimates of GCA effects revealed that parents Jalal and Sarhad White were good general combiners for most of the traits under discussion.
Bibliography:F30
CATPAK-74690
ISSN:2221-6421