14. Correlation and heritability estimates of seedling traits under salt stress conditions of bread wheat genotypes

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Naila Gandahi, Abdul Wahid Baloch, Muhammad Jurial Baloch Muhammad Ubaidullah Shirazi

Abstract

Abstract


The current study was aimed to estimate correlation and heritability of different seedling and physiological attributes of Triticum aestivum L. genotypes under normal and salinity stress conditions. In this context, a set of 22 bread wheat genotypes were grown in CRD with three replications having two treatments (control and 12dSm-1). Mean squares from analysis of variance demonstrated significant (P ≤ 0.01) with respect to treatment effect, genotype differences and treatment x genotype interaction on all studied parameters, revealing that evaluated bread wheat genotypes possessed valuable genetic resources, which may further be exploited in future breeding programs. With regard to correlation results obtained from normal and salinity stress conditions, the traits root length and shoot length associated positively and significantly with other seedling and physiological traits, suggesting that rise in any seedling/physiological trait congruently improve the other traits. Considering the heritability estimates, all traits showed high heritability under normal and stress conditions. The occurrence of high broad sense heritability in the present investigation demonstrated the suitability of genotypes for breeding programs for stress environments.


Keywords: Bread wheat; Correlation; Heritability; Salinity; Seedling traits


http://dx.doi.org/10.19045/bspab.2018.700170

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