Genetic variability studies in segregating generation for grain and nutritional quality traits in rice (Oryza sativa L.)

Abstract

The experimental materials used were four traditional landraces and six improved high yielding varieties of Tamil Nadu raised in during kharif 2012-2014. Genetic variability parameters on F3 population (20 selected F3 plants) of two cross combination viz., IR 72 x Veeradangan and ADT 39 x Kavuni in F3 population depicted wide range of variability and its ranged from 6.46 to 10.39 mg/100 g while it was from 5.39 to 7.65 mg/100 g in IR 72 x Veeradangan F3 population. Calcium content for IR 72 x Veeradangan in selected F3 population recorded wide range of variability and its ranged from 61.43 to 97.63 mg/100 g with a mean value of 80.67 mg/100 g whereas, ADT 39 x Kavuni in F3 population revealed the low range of variability and its ranged from 53.38 to 94.25 mg/100 g with a mean value of 79.58 mg/100 g for magnesium content. For iron content, IR 72 x Veeradangan in F3 population showed wide range of variability and its ranged from 0.53 to 1.03 mg/100 g with a grand mean of 0.80 mg/100 g whereas, ADT 39 x Kavuni in F3 population ranged from 0.61 to 1.33 mg/100 g and from with a grand mean value of 0.97 mg/100 g. For zinc content, wide range of variability was found in ADT 39 x Kavuni (1.43 to 2.16 mg/100 g) and in IR 72 x Veeradangan (1.51 to 1.98 mg/100 g) in F3 population.