Vol. 10, Issue 12 (2021)

Author(s):
Ravi Kishan Soni, NR Koli, Manoj Kumar, Yamini Tak, Mohamad Aarif, CB Meena and B Ram

Abstract:
An experiment was conducted on 10 ×10 half diallel analysis to study the combining ability effects and their variances in rice involving ten diverse parents and their forty-five hybrids made through diallel mating without reciprocals. Results revealed that SCA variances was found greater than GCA variances for most of the traits viz., days to 50% flowering, days to 75% maturity, panicle length, number of spikelets per panicle, 1000 grain weight, kernel length, kernel length-breadth ratio, kernel length after cooking, elongation ratio, hulling and milling per centage indicating the preponderance of non-additive gene action. The parents viz., P-1592, P-1121, P-2511, Surabhi and Mahi Sugandh were found best general combiner for quality traits, earliness and dwarfness based on per se performance and combining ability. Majority of cross combinations were involved with good × average, good × poor and poor × good type of gene interactions which substantiate the operation of non-additive gene action expression of these traits. Among the crosses viz., Pratap-1 × P-2511, P-1592 × P-2511, P-1121 × P-2511, P-1612 × P-2511, P-1592 × P-1612, P-1592 × P-1121, Pratap-1 × P-1612, P-1592 × Mahi Sugandha and P-1592 × Pratap-1 were found the most promising crosses for grain yield per plant and most of the grain quality traits.