Potential and limits of whole genome prediction of resistance to Fusarium head blight and Septoria tritici blotch in a vast Central European elite winter wheat population

TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik
Vilson MirditaYong Jiang

Abstract

Fusarium head blight and Septoria tritici blotch resistances are complex traits and can be improved efficiently by genomic selection modeling main and epistatic effects. Enhancing the resistance against Fusarium head blight (FHB) and Septoria tritici blotch (STB) is of central importance for a sustainable wheat production. Our study is based on a large experimental data set of 2325 inbred lines genotyped with 12,642 SNP markers and phenotyped in multi-environmental trials for FHB and STB resistance as well as for plant height. Our objectives were to (1) investigate the impact of plant height on FHB and STB severity, (2) examine the potential of marker-assisted selection, and (3) study the prediction ability of genomic selection modeling main and epistatic effects. We observed low correlations between plant height and FHB (r = -0.15; P < 0.05) as well as STB severity (r = -0.17; P < 0.05) suggesting negligible morphological resistances. Cross-validation in combination with association mapping revealed absence of large effect QTL impeding an efficient pyramiding of different resistance loci through marker-assisted selection. The prediction ability of genomic selection was high amounting to 0.6 for FHB and 0.5 for STB resistance. ...Continue Reading

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Citations

Jan 10, 2016·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Sang HeYong Jiang
Jun 15, 2016·Annual Review of Phytopathology·Ravi P SinghJulio Huerta-Espino
Aug 6, 2016·Annual Review of Phytopathology·Jesse Poland, Jessica Rutkoski
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Jan 24, 2019·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Awais Rasheed, Xianchun Xia
Jan 5, 2020·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Zhengqiang MaYang Yuan
Aug 23, 2019·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Sang HeHans D Daetwyler
Sep 3, 2020·Plant Biotechnology Journal·Abhishek BohraRajeev Kumar Varshney
Dec 16, 2018·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Cathérine Pauline HerterThomas Miedaner
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Nov 20, 2016·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Yong JiangJochen C Reif
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Mar 15, 2021·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Thomas Miedaner, Peter Juroszek
Aug 24, 2021·Frontiers in Plant Science·Lance F MerrickArron H Carter

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