GENE ACTION AND COMBINING ABILITY ANALYSIS IN CMS BASED HYBRID RICE FOR GRAIN YIELD AND QUALITY ATTRIBUTING TRAITS

PARMESHWAR KU SAHU¹*, DEEPAK SHARMA², SATYAPAL SINGH³, POOJA SAHU^4
1Department of Genetics and Plant Breeding, Indira Gandhi Krishi Vishwavidyalaya, Raipur, 492012, Chhattisgarh
²Department of Genetics and Plant Breeding, Indira Gandhi Krishi Vishwavidyalaya, Raipur, 492012, Chhattisgarh
³Department of Genetics and Plant Breeding, Indira Gandhi Krishi Vishwavidyalaya, Raipur, 492012, Chhattisgarh
⁴Department of Genetics and Plant Breeding, Indira Gandhi Krishi Vishwavidyalaya, Raipur, 492012, Chhattisgarh
* Corresponding Author : parmeshwarsahu1210@gmail.com

Received : 12-06-2016     Accepted : 03-07-2016     Published : 18-10-2016
Volume : 8     Issue : 48       Pages : 2024 - 2029
Int J Agr Sci 8.48 (2016):2024-2029

Keywords : GCA, SCA, CMS, Hybrid rice, Gene action
Academic Editor : Mishra Tulika, Arora Shefali
Conflict of Interest : None declared
Acknowledgements/Funding : None declared
Author Contribution : None declared

Study of combining ability and genetic behavior of the parents are essential to search newer hybrid combinations with better grain quality features. An experiment was conducted on twenty one crosses which were generated in line x tester (LxT) fashion by using three CMS lines and seven testers. The LxT interaction was significant for all 23 traits taken under study. The magnitude of specific combining ability variances was higher than that of general combining ability variance for all the traits under study indicating a key role of non-additive gene action in controlling these traits. IR79156A was identified as a good general combiner for grain yield per plant because it exhibited the positive GCA effect with many desirable traits, whereas CRMS32A was identified as best general combiner for most of the quality traits viz., head rice recovery, hulling%, milling%, and elongation ratio. Among the testers, Karmamahsuri, Suraksha, Bagdidhan and TOX981-11-2-3 were found to be a good combiner for grain yield per plant and other related traits. TOX981-11-2-3, Karmamahsuri and Bagdidhan were identified as a good general combiner for head rice recovery and other quality traits. Crosses IR58025AxSuraksha, IR58025AxInger-2114, CRMS32AxKarmamahsuri, IR79156AxKarmamahsuri and IR79156AxRIL-62 showed the higher SCA value for grain yield per plant. IR58025AxSuraksha, IR58025AxTOX981-11-2-3, CRMS32AxInger-2-114 and IR58025AxKanakgopala were identified as promising hybrid based on SCA effect for head rice recovery and other quality traits.