Department of Plant Breeding, Haryana Agricultural University, Hissar, 125004, India
*Part of the Ph.D. thesis submitted by Mohd. Yunus to the Haryana Agricultural University, Hissar.
The effectiveness of biparental mating was compared with conventional sclfing in two intervarietal crosses, ‘Kalyansona’ x ‘K 68’ (cross I) and ‘HD 2009’ X ‘Sonalika’ (cross II) of bread wheat. The bipnrental progemes (BIPs) had better mean performance than the F3 selfs for da\s to heading, days to maturity, grains/ear, grain weight/ear, 1000-grain weight and yield/plant in both the crosses. The lower limit of the range was, in general, foreshortened for almost all the characters in the BIPs. Motcover, the upper limit was also increased in the desired direction for some of the characters. Although the phenotypic and genotypic variances were of higher magnitude in the F3 compared to the BIPs. yet attributes like car length, grains/ear, grain weight/ear, 1000-grain weight and yield/plant showed higher genotypic variance in case of the latter than the former. BIPs also exhibited improvement in the heriliability estimates for grains/ear, 1000-grain weight and yield/plant in cross I and for tillers/plant and 1000-gram weight in cross II. The genetic analysis further revealed that, in general, for most of the characters dominance component was of high magnitude.
