Genome-Wide Association Mapping of Correlated Traits in Cassava: Dry Matter and Total Carotenoid Content
A genome-wide association mapping using 672 clones genotyped at 72,279 single nucleotide polymorphism loci was performed
Abstract
Cassava is a starchy root crop cultivated in the tropics for fresh consumption and commercial processing. Primary selection objectives in cassava breeding include dry matter content and micronutrient density, particularly provitamin A carotenoids. These traits are negatively correlated in the African germplasm. This study aimed at identifying genetic markers associated with these traits and uncovering whether linkage and/or pleiotropy were responsible for observed negative correlation. A genome-wide association mapping using 672 clones genotyped at 72,279 single nucleotide polymorphism (SNP) loci was performed.
This work is part of the 鈥淣ext Generation Cassava Breeding Project鈥� which is supported by the UK Department for International Development, in partnership with the Bill & Melinda Gates Foundation.
Citation
Rabbi, I. Y., L. I. Udoh, M. Wolfe, E. Y. Parkes, M. A. Gedil, A. Dixon, P. Ramu, J. Jannink, and P. Kulakow. 2017. Genome-Wide Association Mapping of Correlated Traits in Cassava: Dry Matter and Total Carotenoid Content. Plant Genome 10. doi:10.3835/plantgenome2016.09.0094