Improvement in lint yield and fibre quality traits in inter and intra specific hybrids in American cotton

摘要

This study was conducted to improve yield potential allow with good combination of fibre quality hybrid. The 35 inter specific and 15 intraspecific hybrids were generated by using five lines and ten testers. Highest positive significant heterosis forlint yield/plant was exhibited by hybrids GSHV 01/1338 x TCB 26 (39.2%), GSHV 01/1338 x GSB 41 (25.1%), G Cot 10 x DB 10 (20.0%) in inter specific group and crosses GSHV 01/1338 x GSHV 112 (24.6%) and G Cot 20 x GSHV 112 (20.2%) in intra specific group and also possesses acceptable level of fibre quality. Among parental, G Cot 10, GSHV 01/1338, GSB 41, GSHV 112, 76 IH 20 and BC 68-2WW reported good general combiners for lint yield and fibre qualities. These high yielding hybrids involved good x good andgood x poor combinations of GCA effects and also exhibited significant positive SCA effects for lint yield and fibre qualities.