Gupta, S.K. and Rai, K.N. and Kumar, M.S. (2010) Effect of genetic background on fertility restoration of pearl millet hybrids based on three diverse cytoplasmic-nuclear male-sterility systems. Journal of SAT Agricultural Research, 8. 4pp.
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Abstract
Isonuclear A-lines with A1, A4 and A5 cytoplasm in five diverse genetic backgrounds (ICMA 88004, ICMA 89111, ICMA 94555, ICMA 96111 and ICMA 96666) crossed with 19 cytoplasm-specific R-lines generated 285 F1 hybrids, which were evaluated for male fertility/ sterility in two contrasting seasons (postrainy season and rainy season) of 2009 at ICRISAT, Patancheru, India. Fertility restoration of hybrids with the A4 and A5 cytoplasm was neither affected by the genetic backgrounds nor by the environments as 94 hybrids in each cytoplasmic background were fertile during the postrainy season, while all 95 hybrids were fertile in the rainy season. In case of hybrids with the A1 cytoplasm, genetic background of the male-sterile lines as well as the environments had strong effect on fertility restoration of hybrids. The largest proportion of hybrids with this cytoplasm (14%) were sterile during the postrainy season, indicating that evaluation of hybrids during the postrainy season may be more efficient to identify those with stable fertility restoration across the environments.
| Item Type: | Article |
|---|---|
| Author Affiliation: | International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru 502 324, Andhra Pradesh, India |
| Subjects: | Crop Improvement > Genetics/Genomics Crop Improvement > Plant Breeding |
| Divisions: | Millet |
| Depositing User: | Sandhya Gir |
| Date Deposited: | 07 Dec 2010 20:30 |
| Last Modified: | 29 Dec 2010 20:00 |
| Official URL: | http://ejournal.icrisat.org/volume8/Sorghum_Millet... |
| URI: | http://eprints.icrisat.ac.in/id/eprint/908 |
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