Quantitative analysis of yield contributing trait in F4 segregating generation of wheat (Triticum aestivum L.)

Abstract

The present investigation was conducted to examine the genetic variability among 30 genotypes of wheat, during Rabi-2016-17 under randomized block design with three replications. The data were recorded for fourteen quantitative characters to obtain estimates of variability, heritability, genetic advance and correlation coefficient. Significant differences were observed among the genotypes for all the characters studied. A perusal of coefficient of variation showed that difference between PCV and GCV was high for most of the characters studied indicating more effect of environment on the expression of these characters. The genotypic coefficient of variation (GCV) was observed high for plant height followed by, frist node to spike, tillers per plant, seed yield per plant and spike length. The phenotypic coefficient of variation (PCV) was exhibited high by Plant height followed by tillers per plant, spike length and seed weight per plant. Heritability was observed high for plant height followed by 1000 seed weight and flage width. Genetic advance was recorded moderate for plant height. Seed yield exhibited positive and significant correlation with 1000 weight, spike length, frist node to spike, spiklets per plant, tillers per plant, plant height and biological yield at genotypic level. Therefore, selection can be exercised upon these characters for yield improvement of wheat.