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Prof. Mohamed Kassem Mohamed Khalifa :: Publications:

Title:
STUDIES ON HETEROSIS AND COMBINING ABILITY FABA BEAN. (Vicia faba L.) I- EARLINESS AND YIELD COMPONENTS
Authors: .KASSE EL-HOSARY A.A;AM..M..SAAD and M.I.ABD EL-KRALIK
Year: 1992
Keywords: Not Available
Journal: Not Available
Volume: Not Available
Issue: Not Available
Pages: Not Available
Publisher: Not Available
Local/International: Local
Paper Link: Not Available
Full paper Mohamed Kassem Mohamed Khalifa_21.pdf
Supplementary materials Not Available
Abstract:

A half diallel set of six genetically diverse lines of faba beans, was evaluated for heterosia, general and specific combining ability (GCA and SCA). Results showed significant negative mid- parent. heterosis for flowering date (FD), maturity date (MD) and mattrity period (MP). Ten hybrids expressed significant positive . . mid—parent heterosis and nine hybrids expressed significant better—parent heterosis for seed yield/plant. GCA and SCA were significant for all traits with the excep tiُn of the number of branches/plant. - -Values largely exceeding unity for GCA/SCA ratio were ob tained indicating the importance of additive and additive x addi tive ‘gene action in the expression of the traits. Significant addi tive component (D ), dominance component (h1) and overall. heterozygous dominance were detected for all traits.High herit ability values were obtained for (MD). (MP), number of seeds/pod. and 100—seed weight. Moderate heritability values were obtained for seed yield/plant and number, of branches/plant, - while low heritability values were obtained for (FD), plant height and ntimbe of pods/plant. Correlations of parental means and their0 orde,r of dom1.ndzlce show that small number of seeds/pod was dominant over large.riumber. Increaser genes were dominant over decreasers for (MD),(MP)’ and lOO—eed weight. And low seed yield/plant was dominant over high yield. Breeding methods to handle the resulting material were postulated.

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