Studies of genetic parameters on seed cotton yield and fibre quality traits in Egyptian cotton [Gossypium barbadence L.)

摘要

Forty seven Egyptian cotton (Gossypium barbadense L.) genotypes of diverse origin were evaluated to observe the genetic variability, heritability and genetic advance in yield and fibre quality traits. The analysis of variance study indicated the presence of significant difference among all the traits. The highest PCV and GCV were observed for single plant yield (36.2) followed by bolls/plant (20.4). Genotypic co efficient of variation had a similar trend as PCV. High heritability along with high genetic advance was observed in traits like single plant yield and bundle strength. The combinations of high heritability with high genetic advance will provide a clear base on the reliability of that particular character in selection of variable entries. Based on per se performance, the accessions Suvin, SIV 135, Barbados, EC 101786 and EC 9257 were identified as potential donors which were recorded highest mean values for single plant yield, bolls/ plant, 2.5 per cent span length(mm) and bundle strength (g/tex). Hence these accessions may be exploited for further improvement of the above traits by breeding programmes.