COMBINING ABILITY ANALYSIS, HERITABILITY AND HETEROSIS IN SOYBEAN | ||||
| Journal of Plant Production | ||||
| Article 11, Volume 25, Issue 6, June 2000, Page 3177-3186 PDF (640.51 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2000.259113 | ||||
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| Authors | ||||
| H. E. Yassien,1; M. A. Abd El-Mohsen2 | ||||
| 1Dept. of Agronomy Fac. of Agric. Al-Azhar Univ. Egypt. | ||||
| 2Food Legumes Section, Field Crop Res., ARC, Egypt. | ||||
| Abstract | ||||
| Combining ability analysis , heritability and heterosis were studied for earliness, as well as maturity , yield and some of its components in five diverse soybean (Glycine max “L.” Merril) genotypes, which were crossed in a dillel mating pattern. Results revealed significant differences among the 25 genotypes, for all, the studied traits. General and specific combining abilities were also significant except for number of seeds/pod and 100-seed weight in g.c.a., indicating the importance of both additive and non-additive gene effects. The genotype MBB 80-133 was positively a high general combiner for all attributes except number of days to flowering and maturity. It was the best parent for seed yield /plot. The crosses (MBB 80-133 X H15 L4), (MBB 80-133 X H2L24) and (H2L24 X L35) were found to exhibit high positive specific combining ability effects for number of seeds/pod, seed filling period and seed yield/plot, in the same order. For seed yield/plot the cross (H2L24 X L35) showed positive significant reciprocal effect. The highest value for broad sense heritability was found for number of days to maturity . The mid-parent and better parent heterosis were significant for all the characters. For seed yield/plot, most of the crosses gave more yield than their mid-parent values. The cross (MBB 80-133 X H2L24) showed the highest heterosis over mid and better parents 47.99 and 29.12% , respectively. | ||||
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