HomeInternational Rice Research Notesvol. 23 no. 2 (1998)

Yield system analysis in rice hybrids

M S. Ramesha | B C. Viraktamath | M. Ilyas-ahmed | C. H M. Vijayakumar | S Singh

Discipline: Agriculture



Grain yield is a complex trait that is influenced by genetically controlled physiological components. The rate of accumulation of biomass and actual yield, as well as the ratio between these two components, can determine a genotype's yielding ability. At a similar level of harvest index, increased grain yield can come from increased total biomass or increased harvest index, or increased biomass and harvest index. We therefore investigated the physiological and genetic causes of yield superiority in rice hybrids in the 1994 wet season.