Author(s):

A Konda Reddy, B Yadav, Prashanth Kumar Rai and GM Lal

Abstract: In order to develop and identify superior genotypes, a set of 19 genotypes and 1 check were evaluated in randomized block design with three replications having 22.5 x 5 cm crop geometry during Rabi-2016 at field experimentation centre, Department of Genetics and Plant Breeding, Naini Agricultural Institute, Sam Higginbottom University of Agriculture Technology and Sciences, Allahabad. The data were recorded for thirteen quantitative characters to study genetic variability, heritability and correlation coefficient analysis. Analysis of variance among 19 wheat genotypes showed highly significant differences for all the characters indicated the presence of substantial amount of genetic variability. On the basis of mean performance, the highest grain yield per plant was observed for the genotypes HUW 213 x NW 2086 followed by HUW 231 x K 712 and HUW 234 × K 212-1. An estimate of GCV and PCV revealed that phenotypic coefficient of variation was higher than genotypic coefficient of variation, which indicate presence of environment effect on expression on character studied. Higher difference between GCV and PCV were depicted for flag leaf width, flag leaf length, number of tillers per plant, spike length, harvest index and grain yield per plant. The heritability estimates were high for number of grains per spike followed by test weight, plant height and days to 50% flowering. High heritability coupled with high genetic advance in the present set of hybrids was recorded for grains per spike, indicating predominance of additive gene effects and the possibilities of effective selection for the improvement of these characters. Correlation study revealed that grain yield per hill at genotypic and phenotypic level was positively correlated with biological yield per plant, grains per spike and test weight and at phenotypic level was positively correlated with biological yield per plant, grains per spike, harvest index, number of tillers per plant and test weight.

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