Studies on Genetic Variability, Heritability, Genetic Advance of Maize Inbred Lines

摘要

The 43 maize inbreds were evaluated for 16 different quantitative characters. Analysis of variance revealed highly significant differences among the inbreds for all the character under study indicating existence of wide range of variation. Co-efficient of variation at genotypic (GCV) and phenotypic (PCV) levels and high heritability (broad sense) with expected genetic advance (as percentage of mean) were high for ear height, leaf breadth, cob length, no. of kernels per row, no. of kernels per cob, cob weight, grain yield/plant. Days to 50% tasseling, days to 50% silking and days to 75% husk, showed low PCV, GCVand GA with very high heritability suggesting that there is very little scope for improving these characters by selection.