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- E-ISSN Number: 2277-7695
- P-ISSN Number: 2349-8242
- CODEN Code: PIHNBQ
- ZDB-Number: 2663038-2
- IC Journal ID: 7725
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Vol. 11, Issue 4 (2022)
Combining ability and gene action analysis in red kernel rice (Oryza sativa L.)
Author(s):
Siddharth R Kadam, Sanjay G Bhave, Santosh V Sawardekar, Arun V Mane and Nitin B Gokhale
Siddharth R Kadam, Sanjay G Bhave, Santosh V Sawardekar, Arun V Mane and Nitin B Gokhale
Abstract:
The present investigation was undertaken to estimate the combining ability and gene action in 24 hybrids (F1s) affected by six white kernel females (lines) and four red kernel males (testers) following line x testers mating design. All the F1s had red kernel colour. The analysis of variance for combining ability revealed that general combining ability (gca) variances for testers were highly significant for all the characters except number of spikelets panicle-1, spikelets fertility per cent, test weight, kernel length, kernel breadth and L:B ratio. On the other hand, specific combining ability (sca) variances for line x tester interaction were significant for all the characters. The magnitude of sca variances was higher than gca variances for all characters except plant height and straw yield plant-1, which indicated the predominance of non-additive gene action. This was further supported by low magnitude of б2gca/ б2sca ratios.
The present investigation was undertaken to estimate the combining ability and gene action in 24 hybrids (F1s) affected by six white kernel females (lines) and four red kernel males (testers) following line x testers mating design. All the F1s had red kernel colour. The analysis of variance for combining ability revealed that general combining ability (gca) variances for testers were highly significant for all the characters except number of spikelets panicle-1, spikelets fertility per cent, test weight, kernel length, kernel breadth and L:B ratio. On the other hand, specific combining ability (sca) variances for line x tester interaction were significant for all the characters. The magnitude of sca variances was higher than gca variances for all characters except plant height and straw yield plant-1, which indicated the predominance of non-additive gene action. This was further supported by low magnitude of б2gca/ б2sca ratios.
The estimates of general combining ability effects of the parents revealed that among white kernel lines, Palghar 1, Ratnagiri 6 and Trombay Karjat Kolam whereas among red kernel testers Munga and Valai were recognized as good general combiners for grain yield plant-1 and some of other yield related traits. Tester Munga was good general combiner for most of the characters viz.; panicle length, productive tillers plant-1, number of spikelets panicle-1, spikelets fertility per cent, grain yield plant-1, straw yield plant-1, test weight and kernel length. Female Trombay Karjat Kolam was good general combiner for panicle length, productive tillers plant-1, grain yield plant-1, straw yield plant-1, kernel length and L: B ratio.
In the present study, crosses viz., Karjat 9 x Munga, Trombay Karjat Kolam x Kudai, Karjat 4 x Valai and Trombay Karjat Kolam x Munga were the best specific combinations for grain yield plant-1. For number of grains panicle-1, crosses Ratnagiri 6 x Bela, Palghar 1 x Valai, Ratnagiri 5 x Munga and Karjat 4 x Bela were better combinations and for number of productive tillers plant-1, crosses Ratnagiri 6 x Munga, Ratnagiri 5 x Bela, Karjat 4 x Valai and Karjat 9 x Kudai were the good specific combinations.
The estimates of average degree of dominance varied from greater to unity and emphasized predominance of non-additive gene effects. The lesser than unity value of predictability ratio also suggested prevalence of non-additive gene effects. The importance of additive as well as non-additive gene effects with predominance of non-additive gene effects in inheritance of grain yield and yield components of rice.
Pages: 1983-1989 | 304 Views 74 Downloads
How to cite this article:
Siddharth R Kadam, Sanjay G Bhave, Santosh V Sawardekar, Arun V Mane, Nitin B Gokhale. Combining ability and gene action analysis in red kernel rice (Oryza sativa L.). Pharma Innovation 2022;11(4):1983-1989.
Journal code(s)
- E-ISSN Number: 2277-7695
- P-ISSN Number: 2349-8242
- CODEN Code: PIHNBQ
- ZDB-Number: 2663038-2
- IC Journal ID: 7725
Main Menu
Special Issue
Copyright Form
Identifier
The Pharma Innovation Journal
