1Perunthalaivar Kamaraj Krishi Vigyan Kendra, Kurumbapet, Pondicherry, India.
2Genetics and Plant Breeding Department of Agricultural Botany Faculty of Agriculture, Annamalai University, Annamalai Nagar - 608 002, Tamilnadu, India.
A full diallel analysis involving nine rice genotypes was used to study the combining ability and heterosis for grain yield and its component characters. The study revealed that ADT 44 was good general combiner for all the six traits studied. The parent CR1009 was also observed to be good combiner for all the traits except harvest index. The cross ADT 44 x CR 1009 exhibited highly significant positive sea effects coupled with highly significant positive heterobeltiosis and standard heterosis for number of filled grains per panicle, biomass per plant and grain yield per plant.
Rice, combining ability, heterosis
