Vol. 7, Issue 5 (2018)
Studies on combining ability and heterosis for seed yield and yield components in Rabi castor (Ricinus communis L.)
Dushyant Dube, Ronak Bhakta, Kanak Bhati and Vaibhav Lodhum
Eleven castor (Ricinus communis L.) genotypes consisting of four lines and seven testers and crossed in a line × tester mating design. The ratio of GCA and SCA variance showed non- additive gene action was per-dominant controlling all the traits except for oil content. None of the parents and hybrid found good general and specific combiner for all the characters, respectively. Parental lines GP-525, GP-532 and SKP-84 were good general combiners for seed yield per plot and for one or more characters. While SKP-84 × GP-664, ANDCP-8-1 × GP-525 and SKP-84 × GP-532 were the best specific combiner for seed yield per plot. The higher economic heterosis for seed yield per plot was exhibited by the hybrid ANDCP 8-1 × GP-525 (24.0%) followed by SKP-84 × GP-525 (21.9%), SKP-84 × GP-532 (19.2%) and SKP-84 × GP-664 (16.3%). The per se performance of parents and hybrids were not always reflected in high GCA and SCA effects.
How to cite this article:
Dushyant Dube, Ronak Bhakta, Kanak Bhati, Vaibhav Lodhum. Studies on combining ability and heterosis for seed yield and yield components in Rabi castor (Ricinus communis L.). Pharma Innovation 2018;7(5):171-175.