Genetic Variability Studies in F2 Population of the Wheat Cross DDK-1029 x GPM DIC 66
Rohit Kumar *
Department of Genetics & Plant Breeding, University of Agricultural Sciences, Dharwad-580005, India and Department of Genetics & Plant Breeding, University of Agricultural Sciences, Raichur-584104, India.
Suma S. Biradar
Department of Genetics & Plant Breeding, University of Agricultural Sciences, Dharwad-580005, India.
Srivijay S. Malipatil
Department of Genetics & Plant Breeding, Keladi Shivapppa Nayaka University of Agricultural and Horticultural Science, Navile, Shivamogga-577204, India.
Anil Jadhav
Department of Crop Physiology, College of Agriculture, University of Agricultural Sciences, Raichur – 584 104, Karnataka, India.
Revanasiddayya
Department of Genetics & Plant Breeding, University of Agricultural Sciences, Raichur-584104, India.
Channabasava
Department of Genetics & Plant Breeding, University of Agricultural Sciences, Raichur-584104, India.
Eshwar
Department of Genetics & Plant Breeding, University of Agricultural Sciences, Raichur-584104, India.
Sainanth
Department of Genetics & Plant Breeding, University of Agricultural Sciences, Raichur-584104, India.
Khaja Mohinuddin D
Department of Genetics & Plant Breeding, University of Agricultural Sciences, Raichur-584104, India.
Bharat Patil
Department of Genetics & Plant Breeding, University of Agricultural Sciences, Raichur-584104, India.
*Author to whom correspondence should be addressed.
Abstract
The selection of breeding material heavily relies on genetic variation and its inherited components. A thorough understanding of genetic variation is necessary in order to develop an improved variety. Thus, genetic parameters were assessed in the F2 population of the cross between DDK-1029 and GPM DIC 66. The genetic variability results indicated a moderate to high phenotypic and genotypic coefficient of variation for characters like days to 50% flowering, plant height, productive tillers per plant, spike length, spikelets per spike, grains per spike, thousand grain weight and grain yield. In contrast, the protein, iron and zinc contents exhibited low to moderate phenotypic and genotypic coefficient of variation. All the traits had higher heritability except for grain yield which exhibited a moderate heritability. All the characters exhibited significant GAM except for days to maturity, iron content and protein content which exhibited moderate GAM. This suggests that high genetic variation, heritability, and GAM for such traits will aid in their improvement through both direct and indirect selection.
Keywords: GCV, PCV, GAM, heritability, selection