Vol. 11, Issue 12 (2022)

Author(s):
Varshitha K, Usharani G, Sravani D and Prasanna KL

Abstract:
The present investigation entitled “Studies on heterosis in newly developed inbred lines of maize for yield and quantitative traits (Zea mays L.)” was conducted at Agricultural Research Station, Karimnagar to study heterosis in grain yield and yield contributing characters. The experimental material comprised of crossing of 10 parental lines in half diallele mating design and 45 single cross hybrids were generated in Kharif, 2021. The hybrids along with parents and six standard checks were evaluated in Randomized Block Design with two replications in Rabi 2021-22 for twelve agro-morphological traits. Standard heterotic effects over NK 6240 were obtained in 4 crosses for grain yield and crosses, KML 107 × KML 128 and KML 107 × KML 126 had exhibited highest heterotic effects, whereas for Cob Girth, two crosses (KML 110 × KML 126 and KML 107 × KML 126) were found to be highly heterotic. Finally, based on per se performance and standard heterosis KML 107 × KML 128 was a promising hybrid.