GENETICAL BEHAVIOUR OF SOME QUANTITATIVE CHARACTERS OF THE INTRASPECIFIC, EGYPTIAN COTTON CROSS (GIZA 86 X GIZA 8S) | ||||
| Journal of Plant Production | ||||
| Article 8, Volume 28, Issue 10, October 2003, Page 7281-7288 PDF (1.84 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2003.245248 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| Hanem A. Mohamed, | ||||
| Cotton Research Institute, Agricultural Research Center, Giza. | ||||
| Abstract | ||||
| Means and variances for six generations PI, P2, Fl, BCI, BC2 and F2 in the intraspecific cross (G. 86 x G. 85) were used to estimate types of gene action, heterosis, degree of dominance, heritability in broad and narrow senses and expected genetic advance of selection. Highly significant useful heterosis were found for days to first flower, seed cotton yield, lint index, lint % and boll weight. heterosis were significantly negative and disivable for days to first flower and days to first opening boll, while it was positive for lint % and boll weight. Estimates of inbreeding depression were significant for all studied traits except days to first opening boll . The additive gene effects were significant for days to first opening boll, seed cotton yield and 2.5% span length. Dominance gene effects were detected for most studied traits. Moderate to low heritability in broad and narrow senses were observed for most studied traits. Low expected genetic advance values were detected for days to first flower, days to first opening boll and 2.5% span length. | ||||
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