International Journal of Chemical Studies
Vol. 5, Issue 5 (2017)
Studies on heterosis for yield and its contributing traits in hybrid rice (Oryza sativa L.)
Author(s): BS Thorat, RL Kunkerkar and TA Bagkar
Abstract: Twelve hybrids developed from crossing three CMS lines and four testers were evaluated for the extent of heterosis better parent and standard checks for yield and yield contributing traits in rice (Oryza sativa L.) during kharif 2016. Three crosses out of twelve hybrids exhibited highly significant heterobeltosis and standard heterosis for grain yield plant-1. Heterosis for grain yield plant-1 was manifested due to the significant and positive heterosis for its components viz., total productive tillers plant-1, panicle length (cm), number of filled spikelets panicle-1, spikelet fertility (%), 1000 grain weight (g) and harvest index (%). The top two heterotic combinations identified for grain yield plant-1 were IR58025A x NPQ-49 and RTN12A x NPQ-49 which exhibited more than 40% heterobeltosis and standard heterosis ranged from 3.64% to 53.14%.
Pages: 07-12 | 847 Views 48 Downloads
How to cite this article:
BS Thorat, RL Kunkerkar, TA Bagkar. Studies on heterosis for yield and its contributing traits in hybrid rice (Oryza sativa L.). Int J Chem Stud 2017;5(5):07-12.