Variation and inheritance of quantitative traits in commercial x S. spontaneum L. crosses
| MSI03P3913 | |
| Badaloo, M. G. H. Ramdoyal, K. | |
| Variation and inheritance of quantitative traits in commercial x S. spontaneum L. crosses | |
| Lalouette, J. A., Bachraz, D. Y., Bheenick, K. J. (eds), Proceedings Sixth Meeting of Agricultural Scientists, Boname Hall, MSIRI, Réduit, Mauritius, 8-9 May 2003. Réduit: Food and Agricultural Research Council. 340 p. | |
| book chapter | |
| 2004 | |
| p. 169-178 | |
| Also appeared in Revue agric. sucr. Ile Maurice 84(1-3): 106-115 (2005) | |
| En | |
| En | |
| Data on agronomic and quality characters were used to derive genetic variance and inheritance of characters, expected selection gains and assess the association between traits in 14 F1 seedling populations obtained from crosses between male sterile commercial varieties and clones of the wild Saccharum spontaneum species. Frequency distributions for agro-morphological and quality characters tended towards normality. There were highly significant genetic differences between full-sib families and heritability estimates varied from low to moderately low for dry matter percent cane, fibre percent cane and stalk number to moderately high for stalk diameter and high for pol percent cane. Phenotypic correlation coefficients established among the agro-morphological and quality characters on both a family and within family basis indicated associations that were close to the parental source and points to the difficulty in increasing sucrose and fibre content concurrently. However, within family correlations indicated that there was the possibility of introgressing desirable characters from the wild S. spontaneum genome into commercial varieties. The expected response to selection indicates good scope to widen the genetic base of sugar cane varieties. Bivariate cross prediction was shown to be robust in the identification of the best crosses for the pair-wise combination of pol and fibre on both a fresh and dry matter basis, stalk number and dry matter percent cane, but not for stalk number and diameter and stalk diameter and fibre. | |
| Sugarcane germplasm utilization INTERSPECIFIC HYBRIDIZATION heritability genetic base cross prediction Saccharum spp. genetic variance inheritance varieties Saccharum spontaneum | |
| Mauritius | |
| Cane breeding and genetic improvement | |
| Cytology and genetics | |
| 2003-05-09 | |
| En | |
| MSIRI | |
| LIB | |
| cat | |
| PB |