| Popis: |
India imports superior-quality cotton because the quality of fibres of Indian cotton is poor, especially in terms of upper half mean length (UHML) and fibre strength-the two traits that command top priority in breeding cotton. To facilitate selection in breeding, an effort was made to arrive at a desirable balance between fibre quality and yield by assessing their combining ability to isolate transgressive segregants. Genetic variability and heritability were studied in F2 generations of four single crosses and two double crosses with respect to the seed cotton yield per plant and parameters that govern fibre quality. In most crosses, the yield per plant showed high variability, heritability and genetic advance as percent mean; however, some crosses showed high variability for fibre quality and some showed high variability and heritability for ginning out-turn, lint index, micronaire value and fibre strength. Therefore, selecting lines from these crosses for superior fibre quality will prove particularly rewarding. |
