Vol. 10, Issue 7 (2021)

Author(s):
AS Totre, AS Jadhav, NN Parihar, MS Shinde, NS Kute, US Dalvi and VR Patil

Abstract:
The experiment was undertaken on Line x Tester analysis for ancillary data of grain yield and its component traits in crosses of A line and R line of rabi sorghum at All India Co-ordinated Sorghum Improvement Project, M.P.K.V., Rahuri, during the year 2017-18 with objectives to study the general and specific combining ability of parents and hybrids. Combining ability studies for grain yield and its component traits was studied using four male sterile lines and ten testers at Sorghum Improvement Project, MPKV, Rahuri, Maharashtra. Observation recorded on Days to 50% flowering, Days to physiological maturity, Seedling height at 14 (DAE), Plant height, Grains per panicle, Panicle weight, 1000 grain weight, Dry fodder weight, Dry matter content, Grain yield per plant and Harvest index. The mean squares due to lines, testers and lines x tester were highly significant indicating the presence of variability for most of the characters. Estimates of general combining ability (GCA) and specific combining ability (SCA) variances indicated the predominance of non-additive gene action for most of the characters. The line Parents, line RMS-2010-10A and testers, RSV-2015, RSV-2124, RSV-2138 and RSV-1850 were observed good general combiner for grain yield and yield contributing characters. The hybrid viz., RMS-2010-16A x RSV-2124 (12.55), RMS-2010-24A x RSV-2015 (9.65), CMS-185A x RSV-1850 (8.25) and RMS-2010-10A x CSV-26 (6.94) etc. exhibited highly significant and positive SCA effects for grain yield which could be exploited for development of hybrids.