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Title: | Hybrid vigour and combining ability in long duration pigeonpea [Cajanus cajan (L.) Millsp.] hybrids involving male sterile lines |
Authors: | Pandey, N Singh, N.B. |
Issue Date: | 2002 |
Publisher: | Indian Society of Genetics and Plant Breeding |
Citation: | Pandey, N., & Singh, N. B. (2002). Hybrid vigour and combining ability in long duration pigeonpea [Cajanus cajan (L.) Millsp.] hybrids involving male sterile lines. Indian Journal of Genetics and Plant Breeding, 62(03), 221-225. |
Abstract: | Hybrids, utilizing three genetic male sterile lines (DAMS-1, ICPMS 3783 and KPMS 1050) and 12 diverse genotypes of the long duration group of pigeonpea [Cajanus cajan (L.) Millspj were evaluated for general and specific combining ability, variance components and standard heterosis. Among the lines DA 32, DA 34, DA 37, DA 46, DA 93-4, DA 93-2, DA 94-6 and Bahar mutant and testers DAMS-1 and ICPMS 3783 were found to be good general combiners for seed yield/plant-1 and other yield contributing traits such as secondary branches/plant-1, clusters/planC1 and number of pods/planc1. The tester DAMS-1 was also a good general combiner for primary brancheslplanc1 and per cent pod setting. The estimates of a2gca and a2sca suggested partial dominance of additive genetic action for number of pods/planc1. While for days to flowering, days to maturity, plant height, number of primary branches/planc1, per cent pod setting, harvest index and seed yield/planc1 over dominance with non additive genetic variance was observed. The contribution of testers to the performance of crosses were found significant for seed yield/planC1 and yield attributing traits. Out of 36 cross combinations 10 showed higher magnitude of specific combining ability effects involving high x high (H x H) and low x high (L x H) combining ability effects of lines and testers, respectively for seed yield/plant-1, number of secondary branches/planc1 clusters/planc!, number of pods plant and per cent pod setting. The estimated standard heterosis ranged from 144.32 per .cent (KPMS 1050 x DA 94-6) to 8.75 per cent (MS 3783 x DA 37). Out of 36 combinations, 12 registered highly significant positive heterosis for seed yieldlplanc1 and number of primary and secondary branches/planc1 clusters plant and number of pods/planc1. |
Description: | The copyright of this paper has associated with the Journal. |
URI: | http://irrpcau.inflibnet.ac.in:8080/jspui/handle/123456789/33 |
ISSN: | 0971-930X |
Appears in Collections: | Papers |
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