International Journal of Chemical Studies
Vol. 5, Issue 4 (2017)
Heterosis and combining ability studies for fibre quality traits in inter-specific hybrids of cotton (G. hirsutum L. × G. barbadense L.) over environments
Author(s): Balakrishna B, Chenga Reddy, Siva Reddy KV and Lal Ahamed M
Abstract: The present study was conducted at three locations during kharif 2014-15 with 72 inter-specific hybrids along with their parents and two standard checks to study standard heterosis and combining ability for different fibre quality traits. Combining ability analysis indicated the presence of additive gene action for 2.5% span length and uniformity ratio whereas micronaire value, bundle strength, fibre elongation and lint yield plant-1 were controlled by non-additive gene action. Among the lines ADB 532 and BS 37 and the testers TCB 37 and SUVIN were found to be good general combiners for 2.5% span length and bundle strength. The hybrid, MCU 5 × GSB 40 for 2.5% span length and bundle strength and H 1442 × GSB 41, TSH 0250 × GSB 40, ADB 542 × DB 16 for lint yield plant-1 exhibited high per se performance, high and significant positive sca effects and standard heterosis. The cross combinations which are showing high standard heterosis and sca effects may be recommended for commercial cultivation after further confirmation of their stable performance over different locations and years.
Pages: 372-378 | 576 Views 20 Downloads
How to cite this article:
Balakrishna B, Chenga Reddy, Siva Reddy KV, Lal Ahamed M. Heterosis and combining ability studies for fibre quality traits in inter-specific hybrids of cotton (G. hirsutum L. × G. barbadense L.) over environments. Int J Chem Stud 2017;5(4):372-378.