Kuldeep Choudhary*, R.B. Dubey, H.K. Jain, Vijay Sahu and A.K. Malav
Department of Plant Breeding and Genetics, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture and Technology (MPUAT), Udaipur -313001, India
Email: ashok3251@gmail.com
Received-05.02.2017, Revised-19.02.2017
Abstract: Fifteen maize inbred were crossed as lines to three testers(HKI-193-1, CLQRCYQ-40-3-1 and HO6R-6136-68-1-1-6) in Line X Tester mating design to generate 45 F1 crosses. The sixty seven genotypes including 45 F1 hybrids along with their 18 parents and 4 checks were evaluated for five qualitative traits namely starch content, oil content, protein content, tryptophan content and lysine content in Randomized Block Design to estimate the General Combining Ability (GCA), Specific Combining Ability (SCA) and Heterosis of F1 crosses.In the Line x Tester analysis, significant variability was observed among the genotypes for five traits. The hybrids L3 x T3 and L5 x T3 exhibited maximum mean values for oil content and hybrid L10 x T1 exhibited maximum mean values for starch content. The maximum mean value for protein content was depicted by hybrid L6 x T2, whereas hybrid L10 x T3 exhibited maximum mean value for tryptophan content. The hybrid L7 x T3 exhibited maximum mean values for lysine content.
Keywords: Combining ability, Grain yield, Heterosis, Quality protein maize
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