Heterosis for Yield and Yield Attributing Traits in Castor (Ricinuscommunis L.) Patted Vinay S.1,*, Shankergoud I1, Prabhakaran A. J.2 1Main Agricultural Research Station, UAS, Raichur-584104, Karnataka 2Directorate of Oilseeds Research, Rajendranagar, Hyderabad, 500 030 *email: vinaypatted@gmail.com
Online published on 23 December, 2016. Abstract Heterobeltosis and standard heterosis for seed yield and its attributes was studies in 80 hybrids developed through line x tester mating design (Ten lines and eight testers). The significant positive heterosis for seed yield over better parent ranged from-35.15% to 111.34% and standard heterosis over checks DCH177 and DCH519 for seed yield ranged from, 46.89% to 48.14% and-27.72% to 101.63% respectively. The cross combination DCS-94 x K111166-11 exhibited the significant positive better parent heterosis and significant positive standard heterosis over both checks DCH-177 and DCH-519 for yield per plant. Comparison of top five crosses for yield (DCS-94 x K11-1166-1, DCS-78 x K11-1174-1, DCS94 x 48-1, DCS-17 x K11-1135-1 and DCS-94 x K111135-1) based on per se performance, heterosis over better parent and standard heterosis indicated that most superior hybrids were accompanied by significant and positive heterosis for yield attributing traits like primary spike length, effective spike length, secondary spike length, number of capsules on primary spike and effective number of spikes per plant advocating that the high heterosis for seed yield resulted through contribution of these component traits. Hybrid vigour of superior crosses can be exploited commercially in future through further evaluation for stability performances across the environments over years Top Keywords Heterobeltosis. Standard heterosis, castor. Top |