ESTIMATION OF   SOME GENETIC PARAMETERS  OF EARLINESS AND FIBER QUALITY OF SOME COTTON CROSSES.

Al-Marsoomi, A.J.I.; D.S.Al-Obaidy,

	ESTIMATION OF SOME GENETIC PARAMETERS OF EARLINESS AND FIBER QUALITY OF SOME COTTON CROSSES.
The Iraqi Journal of Agricultural Science
Article 1, Volume 39, Issue 6, 2008, Pages 72-85
Authors
A.J.I. Al-Marsoomi;
Abstract
Hybridization has a vital role of induced genetic variations that perhaps leading to improvements in agronomic characters. A field experiment was performed including straight hybridization among cotton genotypes during 2002 season, backcross, second filial generation were obtained in 2003. The six populations (P1, P2, F1, F2, BC1 and BC2) for each cross were grown during 2004 by using Randomized Completely Block design with three replication to study some genetic parameters for earliness and quality characters.Both methods of estimation gene effects (weighted least square method of Cavalli (10) and weighted least square method of digenec interaction) revealed significant positive gene effects in most earliness and quality characters for Marsoomi 4 X Lashata, Marsoomi4 X W888 crosses and quality characters for Lashata X Marsoomi 4, W888X Marsoomi 4 crosses, days to 60% opening bolls for coker310X pacot 189 and earliness characters for Cafco 1XDise, also dominance effects were important in quality characters in other crosses. Epistasis were existent in most studied characters. Hybrid vigour was most obviously in fineness in Packot 189X Coker310 cross companied with high percent of expected genetic advance (17.11%) in this character.

Statistics Article View: 28 PDF Download: 4