Heterosis, inbreeding depression and gene action of some quantitative characters in a diallel cross among five white lupin genotypes [electronic resource].

Includes references.

The present investigation was carried out at Giza Research Station during 1999/2000, 2000/2001 and at Shandaweel Research Station in 2001/2002 growing seasons. All F1' and F2' Hybrids (including reciprocals) in a diallel mating design between five white lupin genotypes differing in origin (Giza-1, Dijon-2, Line 20. Line 37/3 and Kiev Mutant) were studied. Significant differences among genotypes and some crosses were detected for all studied characters, indicating genetic variability for all variables. Significant differences between some hybrids and their reciprocals were observed for all studied charcters, suggesting that earliness, seed yield and its components appeared to be influenced by the female parent Negative heterosis percentage relative to mid parent was significant in seventeen crosses for days to maturity. Heterosis percentage was significantly positive in twelve, seven. eleven, thirteen, five and twelve crosses for plant height, number of branches, pods, seeds, 100-seed weight and seed yield per plant, respectively. Moreover, heterosis over the better parent was significant in some crosses for all studied characters except number of branches per plant.

Summary in Arabic.

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