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Asian Journal of Plant Sciences

Year: 2005 | Volume: 4 | Issue: 6 | Page No.: 603-607
DOI: 10.3923/ajps.2005.603.607
Combining Ability for Flower and Pod Characters of Lablab Bean under Two Sowing Environments
M.M. Alam and M.A. Newaz

Abstract: A study on eight flower and pod characters of Lablab bean (Lablab purpureus) was conducted in a 6X6 F2 diallel population grown under two sowing dates, July 1, 2000 (S1) and August 14, 2000 (S2). Combining ability studies revealed that both additive and non-additive gene actions controlled the expression of all the characters in both sowings. The parent DSN26 was found to be best general combiner for most of the characters irrespective of sowing dates. KBS2 and KBS3 expressed as good general combiners for early flowering and pod formation in both S1 and S2 conditions. In both sowing dates, DS 161 was a good general combiner for flower and pod formation and DS30 for pod length. The F2 progeny of DS52 x DS161 was the best specific combiner for early flowering in both sowings followed by DS30 x DSN26. Considering the stability of the F2 genotypes in different sowing dates and their SCA effects, DS30 x DS52 was identified as a promising genotype for inflorescence formation and pod yield. For the rate of pod setting DSN26 x KBS3 was the best specific combiner in both sowings. Significant different results were also found for both GCA and SCA effects due the influence of sowing dates on the genotypes.

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How to cite this article
M.M. Alam and M.A. Newaz , 2005. Combining Ability for Flower and Pod Characters of Lablab Bean under Two Sowing Environments. Asian Journal of Plant Sciences, 4: 603-607.

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