Genetic variability and heritability studies on bread wheat (Triticum aestivum L.)

Abstract

Genetic variability was studied in thirty diverse genotypes of wheat evaluated during Rabi season of 2007-2008 under agro climatic\rconditions of Allahabad. The study revealed highly significant differences for all the characters studied, indicating the presence of\rsubstantial genetic variability. The phenotypic and genotypic co-efficient of variation (PCV and GCV) was moderate high for tiller\rper plant followed by grain yield per plant and biological yield per plant. While the heritability was found to be highest in plant height\rfollowed by days to 50 per cent flowering, strove yield per plant, number of grains per spike, test weight and grain yield per plant.\rHigh heritability coupled with high genetic advance was observed in plant height, strove yield and harvest index which indicates the\rpresence of good amount of variability for these traits.