Combining ability study on yield and its contributing traits in maize (Zea mays L)

Experimental material consisted of 25 lines, 2 testers and their 50 crosses along with standard checks viz., Palam Sankar Makka-2 PSCL 4640 were evaluated using Randomized Block Design two replication during Kharif 2020. Genotype mean square was significant for days to 50% tasseling, silking, 75% brown husk, ear height (cm), plant length circumference kernel rows/cob, kernels/row, 1000-kernel weight (g), shelling (%) grain yield (q/ha) which indicated the presence sufficient genetic variability in studied. Also ratio GCA variance SCA less than unity all traits preponderance non-additive gene action. Among KI-3 exhibited higher followed by KI-7 CML 140. These lines also highest effect identified as promising parents. × LM 13, 140 139 162 13 14 maximum most traits. cross combinations need be multi-location trials over years assess suitability different agro-climatic zones State.