Author(s):

Deepak Kumar, Anurag Kumar, Ashwani Kumar, Simranjit Kaur and Anand Kumar Yadav

Abstract: Twelve lines were crossed with 4 testers in line x tester fashion to determine the general and specific combining ability for yield and yield contributing traits in wheat. The extent of GCA was higher than SCA for all the characters. Variances due to line x tester showed highly significant differences for all the ten characters in F1 and F2 except days to maturity, number of effective tillers per plant and harvest index in F1. Variances due to line were highly significant for all the characters in both F1 and F2 generations, whereas, due to testers were found non-significant except for number of spikelet’s per spike and number of grains per spike in F1 only. The significant and positive gca effects for seed yield per plant were exhibited by six lines and one tester which in order of merit among lines were HD 2733, NW 5054, K 9006 and HD 2824 in both F1 and F2, respectively and among the testers NW 1014 in F1 generation only. On the basis of gca effects and mean performance, parent HPW 355 was found good combiner for grain yield per plant along with days to 50 per cent flowering, days to maturity, plant height, number of effective tillers per plant, number of grains per spike and 1000 grain weight in both F1 and F2 and Parent NW 5054 for days to 50 per cent flowering, days to maturity, plant height, grain yield per plant and biological yield per plant in both the generations. Out of 48 crosses studied, the most promising crosses were viz., NW 5054 X K 911, NW 1012 X KRL 210 and K 9006 X NW 1014 in F1 and HPW 355 X NW 1014, NW 4108 X KRL 210 and K 9107 X NW 1067 in F2 showed significant & positive sca effects for seed yield per plant as well as some other yield components.

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