Genetic Analysis of Grain Yield and Quality Traits Regarding Heterosis in Rice (Otyza sativa L.)

摘要

The present experiment was carried out to study the heterosis for grain yield and quality traits involving 10 parents and their 45 F t s excluding reciprocals during 2012-13 and 2013-14. The cross (Vallabh Basmati 21 x CSR 13) exhibited highest significant heterosis over better parent (24.22**), standard parent (10.24**) and mid parent (5.41 **) for grain yield whereas the cross (Vallabh Basmati 21 x CSR 30) showed significant heterosis over standard check for grain yield, kernel breath, kernel length, L/B ratio and hulling percent. These crosses could be exploited for getting desirable recombinants from the segregating populations. Inclusion of lines with good combining ability in a national hybrid rice program may offer genetic improvements in breeding for higher yield and some other quality traits in rice.