1Department of Genetics and Plant Breeding, College of Agriculture, University of Agricultural Sciences, Bangalore, 560065, India.
2Department of Agronomy, College of Agriculture, University of Agricultural Sciences, Bangalore, 560065, India.
Standard heterosis was estimated for twelve yield attributing characters on thirteen hybrids over 3 checks viz., KRH-2, Jaya and IR 30864. All hybrids flowered earlier than Jaya and IR 30864. None of the hybrids manifested significant positive standard heterosis over KRH-2, except IR 70369A/Athira for plant height. Two hybrids viz., CRMS 31A/KMR-3 and CRMS 6A/KMR-3 showed significant positive heterosis over all the three checks. Three hybrids expressed significant positive standard heterosis over all the three checks for thousand grain weight. Three hybrids namely CRMS 31 A/KMR-3, CRMS 6A/KMR-3 and KCMS 12A/IET 17082 expressed highly significant positive heterosis over all the three checks for grain yield. Two hybrids viz., CRMS 31A/KMR-3 and CRMS 6A/KMR-3 were identified as promising hybrids as they were non-scented and also high yielding than KRH-2.
