GENETIC ANALYSIS FOR SOME YIELD AND FIBER QUALITY TRAITS USING F2 AND F3 POPULATIONS IN COTTON | ||||
| Journal of Plant Production | ||||
| Article 4, Volume 1, Issue 12, December 2010, Page 1593-1604 PDF (420.74 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2010.86603 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| M. S. M. Srour1; M. A. Hager2; E. I. Zaazaa2; E. F. El-Hashash2 | ||||
| 1Cotton Research Institute, Agriculture Research Center, Giza, Egypt. | ||||
| 2Agronomy Dep., Fac., of Agric. Al-Azhar Univ., Cairo, Egypt | ||||
| Abstract | ||||
| The experiment was conducted at Agricultural Research Center Farm, Giza, Egypt during 2008 and 2009 seasons to estimate the genetic parameters for F2 and F3 generations in the two intra-specific crosses (G. 89 x G. 86) x Suvin and (G.89 x Pima S6) x (G.75 x Sea Island). Observations were recorded on boll weight (g), seed cotton yield/plant (g), lint percentage (%), 2.5% span length (mm), fiber fineness, fiber strength and uniformity index traits. The analysis of variance for all traits studied manifested highly significant differences of F3 generations in the two crosses, while, the F2 generation exhibited highly significant for seed cotton yield/plant and uniformity index in the first cross, and boll weight, seed cotton yield/plant and uniformity index in the second cross. The traits, seed cotton yield, boll weight and lint percentage showed high phenotypic and genotypic coefficients of variations estimates for F2 and F3 generations in the two crosses. There is enough scope for selection based on these characters, and the diverse genotypes can provide materials for a sound breeding programme. High heritability coupled with high genetic advance and genetic advance as percentage of mean (genetic gain) observed for seed cotton yield/plant, boll weight and lint percentage of F2 and F3 generations in the two crosses showed that these traits were controlled by additive gene effects and phenotypic selection for these characters would likely to be effective. These results suggest that rigorous plant selection is required to identify desirable plants from F2 and F3 generation. Selection pressure is low in the F2 and F3 generations but increases in the F4 generation for private breeders. | ||||
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