Vol. 10, Issue 12 (2021)

Author(s):
D Chouhan, RB Dubey, P Choudhary and D Singh

Abstract:
The present study was conducted to estimate general and specific combining ability effects in sweet corn (Zea mays L. Ssp. saccharata) hybrids and to screen out superior performing hybrids and parents. In present study, total 66 genotypes comprising of 45 sweet corn hybrids, 18 parental lines and 3 standard checks (Priya, Madhuri and Sugar-75) were evaluated in RBD in three different environments (E₁ at Instructional Farm, RCA, Udaipur during Kharif-2019, E₂ at ARS, Banswara during Kharif-2019 and E₃ at Instructional Farm, RCA, Udaipur during Rabi-2019-20) in RBD with three replications for twenty diverse traits. The extent of variances due to specific combining ability was more than that of general combining ability variances for most of the characters under study, thus reflecting towards the pre-dominance of non-addative type of gene action in controlling the expression these characters. On the basis of specific combining ability effects, among the selected best five hybrids, sweet corn hybrids L₅ x T₂ and L₆ x T₃ were best for green cob yield, green fodder yield and green cob weight plant^-1 while the hybrid L₁₀ x T₁ was best for green cob yield, green cob weight plant^-1 and TSS content of green grain. Among the parents, lines L₇, L₁₁, L₁₃ and tester T₁ were identified as good combiners for the same.