Construction of high-density bin genetic map and QTL mapping of fruit aroma in longan (<i>Dimocarpus longan</i> Lour.).

ABSTRACT: Aroma is a crucial factor influencing the flavor quality and economic value of longan fruits. This study employed a mapping population consisting of 98 F₁ progeny of 'Shixia × Xiangcui' (exhibiting broad segregation in fruit aroma trait) and their parents. We performed the SNP genotyping through whole-genome resequencing to construct a high-density linkage map, followed by QTL mapping and candidate gene screening for aroma trait. We obtained a total of 554.9 Gbp of sequencing data, with an average depth of approximately 15× for the parents and 12× for the progeny. Three types of SNP markers (lm×ll, nn×np, and hk×hk) were developed, totaling 317 877. After merging with a 100 kb sliding window, 6 134 Bin markers were generated. A first high-density Bin map was constructed, compris

SUBMITTER: Hu W 

PROVIDER: S-EPMC12391000 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature