Vol. 10, Issue 8 (2021)

Author(s):
Bal Krishna, Birender Singh, Shyam Sundar Mandal, Kumari Rashmi and Tushar Ranjan

Abstract:
Thirty-nine crosses produced from 13 lines and 2 testers using Line×Tester mating design were evaluated following RBD design. The objectives of this study were to: (i) determine the type of gene action in expiration of traits and (ii) identify inbred lines and crosses with good combining ability for yield and other morpho-agronomic traits. Significant variation was observed among the hybrids (crosses) except days to 75% brown husk. Variance due to specific combining ability (SCA) was larger than general combining ability (GCA) for the all characters indicating the preponderance of non-additive gene action in the expression of various traits. Inbred lines L₆ followed by L₁₂, L_9, L_3, L₈, L₄ and tester T₂ showed good combining ability for yield and some of the important yield-contributing characters, indicating that they could be good parental lines in hybridization programs. Based on the results, SCHs L₁ÍT₃, L₅ÍT₂, L₈ÍT₁, L₂ÍT₂, L₃ÍT₁, L₄ÍT₁, L₉ÍT₃, L₁₃ÍT₂, L₁₁ÍT₂, L₉ÍT₃, L₆ÍT₂, L₃ÍT₃ and L₄ÍT₂ exhibited high specific combining ability (SCA) effects for yield. These hybrids are recommended for further multi-locational evaluation to determine the stability of their performance.