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Genotyping-by-sequencing of Brassica oleracea vegetables reveals unique phylogenetic patterns, population structure and domestication footprints by Zachary Stansell; Katie Hyma; Jonathan Fresnedo-Ramírez; Qi Sun; Sharon Mitchell; Thomas Björkman; Jian Hua is a scholarly article available to read on EtoBox.

What is Genotyping-by-sequencing of Brassica oleracea vegetables reveals unique phylogenetic patterns, population structure and domestication footprints about?

__Brassica oleracea__ forms a diverse and economically significant crop group. Improvement efforts are often hindered by limited knowledge of diversity contained within available germplasm. Here, we employ genotyping-by-sequencing to investigate a diverse panel of 85 landrace and improved __B. oleracea__ broccoli, cauliflower, and Chinese kale entries. Ultimately, 21,680 high-quality SNPs were used to reveal a complex and admixed population structure and clarify phylogenetic relationships among __B. oleracea__ groups. Each broccoli landrace contained, on average, 8.4 times as many unique alleles as an improved broccoli and landraces collectively represented 81% of all broccoli-specific alleles. Commercial broccoli hybrids were largely represented by a single subpopulation identified within a complex population structure. Greater allelic diversity in landrace broccoli and 96.1% of SNPs differentiating improved cauliflower from landrace cauliflower were common to the larger pool of broccoli germplasm, supporting a parallel or later development of cauliflower due to introgression events from broccoli. Chinese kale was readily distinguished by principal coordinate analysis. Genotyping

Author

Zachary Stansell; Katie Hyma; Jonathan Fresnedo-Ramírez; Qi Sun; Sharon Mitchell; Thomas Björkman; Jian Hua

Publisher

Springer Science and Business Media LLC; Nature Publishing Group; [London]: Springer Nature (ISSN 2662-6810)

Published

2018

Language

EN