Identification of gene (s) controlling grain yield and some morphological traits in bread wheat under water deficit condition using SSR markers

Author: Yousef Mohammadi *, Seyyed Abolghasem Mohammadi*, Mohammad Moghadam*And Mozaffar Rustaei**

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Abstract

Drought is the most important abiotic stress affecting production of wheat in the world. The objective of this research was Identification of QTL for grain yield and some morphological traits and determination of gene function of each QTL and its share in determining the phenotypic trait variance. To identify loci controlling traits related with drought tolerance in wheat, 142 and 121 recombinant inbred line were derived from a cross between Azar2 (drought tolerant) and 87Zhong291 varieties were evaluated under rainfed and supplementary irrigation. Characteristics measured were as follows: grain yield, plant height, spike length, flag leaf length, flag leaf width, second leaf length and second leaf width. Parental polymorphism was assessed using SSR and ISSR. 24 SSR and 16 ISSR polymorphic markers were used to screen population. Linkage analysis assigned 40 polymorphic markers in population map consisted of 45 SSR and AFLP markers. Transgressive segregation was observed for all the stu

Keywords

Composite interval mapping, Drought, Quantitative trait locus, Simple sequence repeats, Wheat

Conclusion

Drought is the most important abiotic stress affecting production of wheat in the world. The objective of this research was Identification of QTL for grain yield and some morphological traits and determination of gene function of each QTL and its share in determining the phenotypic trait variance. To identify loci controlling traits related with drought tolerance in wheat, 142 and 121 recombinant inbred line were derived from a cross between Azar2 (drought tolerant) and 87Zhong291 varieties were evaluated under rainfed and supplementary irrigation. Characteristics measured were as follows: grain yield, plant height, spike length, flag leaf length, flag leaf width, second leaf length and second leaf width. Parental polymorphism was assessed using SSR and ISSR. 24 SSR and 16 ISSR polymorphic markers were used to screen population. Linkage analysis assigned 40 polymorphic markers in population map consisted of 45 SSR and AFLP markers. Transgressive segregation was observed for all the stu

References

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How to cite this article

Yousef Mohammadi *, Seyyed Abolghasem Mohammadi*, Mohammad Moghadam*And Mozaffar Rustaei (2016). Identification of gene (s) controlling grain yield and some morphological traits in bread wheat under water deficit condition using SSR markers , Biological F