Genetic Variability Analysis and Correlation Studies of Bread Wheat (Triticum aestivum L.) Genotypes

Year 2022, Volume: 8 Issue: 2, 139 - 145, 31.07.2022

İbrahim Hassanı Somveer Nımbal Vikram Sıngh Abid Noorı

Abstract

In the present investigation, fifty four bread wheat (Triticum aestivum L.) genotypes were evaluated for estimation of the
genetic variability and its potential of each genotype under normal spring condition in Kabul Afghanistan in two years
consequently (2020 and 2021). Analysis of variance revealed that genotypes possess significant genetic variability among
all traits. For all the studied traits, mean squares showed the presence of significant variation among the genotypes. Higher
values of PCV and GCV indicated that there was high variability exiting among the genotypes. The higher values of
genotypic coefficient of variation (GCV) and phenotypic coefficient of variation (GCV) were recorded for grain yield (GCV
= 11.93% and PCV = 16.15%) followed by thousands grains (GCV=7.53% and PCV=8.15%). The highest heritability (0.94)
was indicated in grain yield in the year 2021 followed by thousand grains (0.85) whereas the plant height (0.70) observed
in (2020). The values of genetic advance were recorded low to moderate for all parameters. A highly significant positive
correlation was observed among yield and harvest index and showed the significant difference for others except number of
effective tiller per m2, on contrary the negative non-significant correlation was observed for effective tiller per m2 (-0.07).
Grain yield with biological yield revealed a non-significant correlation (0.04), similarly days to heading revealed a nonsignificant negative correlation with grain yield (-0.05) respectively. From the study suggested that all the traits showing
significant correlation with grain yield needs better attention for increasing yield in future wheat breeding programs.

Keywords

Bread wheat, Broad sense heritability, Genetic advance, Correlation coefficients

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