Author(s):

Shinde AV, Deosarkar DB and Chinchane VN

Abstract: Cotton crop is mainly cultivated for its fibre and hence quality of lint is important in cotton. Thirty hybrid combinations developed by crossing 5 lines and 6 testers were tested along with their parents including 3 checks in Line X Tester design for fibre quality characters. The magnitude of heterosis was estimated in relation to mid parent, better parent and standard checks. Results revealed that the cross combination PA 828 x AKA 7 showed highest and desirable significant standard heterosis for upper half mean length, PA 828 x RAC 024 for micronaire, whereas the cross PA 760 x AKA 7 for uniformity index and PA 740 x RAC 024 for fibre strength. With regards to quality traits, AKA 9703 was found to be best general combiner for upper half mean length, fibre fineness, uniformity index and fibre strength. The cross PA 828 x AKA 7 had good specific combining ability effects (SCA) for upper half mean length, PA 760 x AKA 7 for micronaire, whereas the cross PA 740 x Phule Dhanwantary for uniformity index and PA 740 x RAC 024 for fibre strength.

Pages: 1087-1092  |  690 Views  260 Downloads

Download (891KB)