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Searching for an accurate marker-based prediction of an individual quantitative trait in molecular plant breeding

Fu, Y.-B., Yang, M.-H., Zeng, F., Biligetu, B. (2017). Searching for an accurate marker-based prediction of an individual quantitative trait in molecular plant breeding, 8 http://dx.doi.org/10.3389/fpls.2017.01182

Abstract

© 2017 Fu, Yang, Zeng and Biligetu. Molecular plant breeding with the aid of molecular markers has played an important role in modern plant breeding over the last two decades. Many marker-based predictions for quantitative traits have been made to enhance parental selection, but the trait prediction accuracy remains generally low, even with the aid of dense, genome-wide SNP markers. To search for more accurate trait-specific prediction with informative SNP markers, we conducted a literature review on the prediction issues in molecular plant breeding and on the applicability of an RNA-Seq technique for developing function-associated specific trait (FAST) SNP markers. To understand whether and how FAST SNP markers could enhance trait prediction, we also performed a theoretical reasoning on the effectiveness of these markers in a trait-specific prediction, and verified the reasoning through computer simulation. To the end, the search yielded an alternative to regular genomic selection with FAST SNP markers that could be explored to achieve more accurate trait-specific prediction. Continuous search for better alternatives is encouraged to enhance marker-based predictions for an individual quantitative trait in molecular plant breeding.

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