Criterion for the Selection of High Yielding Maize (Zea Mays ) Genotypes (original) (raw)

Journal of agricultural research

The study was conducted at NARC, Islamabad, Pakistan during the year 2009 to estimate heritability and genetic advances regarding yield and yield contributing traits using fourteen maize (Zea mays) genotypes (BS-01, Agati 2002, Margalla, EV-1097, EV-1098, Sadaf, EV-6098, EV-5098, EV-7004Q, Soan-3, Islamabad Gold, Islamabad White, Raka Poshi and Sahiwal-2002). The experiment was laid out in RCBD with three replications. Data were recorded for plant height, ear height, ear length, leaf area, number of leaves per plant, 100-grain weight and grain yield per plant. Analysis of variance revealed highly significant mean sum of squares for all the characters studied. The highest heritability estimates were observed for 100-grain weight (97.39%). All the other traits were observed to have heritability estimates ranging from 97.39 (100 grain weight) to 47.06% (number of leaves/plant). Range of genetic advance for different traits ranged from 1.26 (ear length) to 2674.45 (grain yield). The hig...