Relationship between heterosis, potence ratio and genetic distance for yield traits in maize (Zea mays)

An experiment was conducted during 2014–18 at Agricultural Research Station, Professor Jayashankar Telangana State University, Karimnagar, to find out the relationship between heterosis, potence ratio and genetic distance for yield contributing characters in maize (Zea mays L.). Heterosis trait dependent exhibiting high level plant height, ear length, kernels/row, 100-kernel weight, grain fodder yield. Two hybrids BML-51 × BML-14 (22.1%) BML-6 (13.2%) recorded heterosis of greater than 10% over check NK6240 exhibited negative flowering maturity traits positive remaining traits. Potence indicated that majority had dominance gene effect expressed diameter, suggesting breeding is an appropriate strategy improvement these Standard 5% observed 7 crosses 6 belonged mid parental divergence group. Five crosses, viz. BML-14, BML-7, BML-6, BML-32 BML-13 with ranging from 7637 8733 kg/ha medium group comprising yielding inbreds, or as parents. Grain found significant positively correlated length weight. Therefore maximize full potential hybrids, inbreds per se performance intermediate are be involved crop programmes.