title: RAD-seq of Coffea arabica leaf
design: This study utilized 295 accessions of Coffea arabica L. germplasm maintained at the Chinese Germplasm Repository of Coffee in Ruili City, Ministry of Agriculture and Rural Affairs, representing three principal genetic groups (Bourbon/Typica, Ethiopian native, and Introgression group) collected from major coffee-producing countries including Kenya, Burundi, Cote d'Ivoire, Colombia, Ethiopia, India, and Portugal.