Identification and QTL Analysis of Flavonoids and Carotenoids in Tetraploid Roses Based on an Ultra-High-Density Genetic Map

• DOI: 10.3389/fpls.2021.682305
• Publication Date: 2021-06-11T10:24:14Z
• Authors: Bixuan Cheng; Huihua Wan; Yu Han; Chao Yu; Le Luo; Huitang Pan; Qixiang Zhang
• Keywords: Petal; Flavonols; Genetic linkage

Roses are highly valuable within the flower industry. The metabolites of anthocyanins, flavonols, and carotenoids in rose petals not only responsible for various visible petal colors but also important bioactive compounds that human health. In this study, we performed a QTL analysis on pigment contents to locate major loci determine color traits. An F 1 population tetraploid roses segregating was used construct an ultra-high-density genetic linkage map using whole-genome resequencing technology detect genome-wide SNPs. Previously developed SSR SNP markers were utilized increase marker density. Thus, total 9,259 mapped onto seven groups (LGs). final length integrated 1285.11 cM, with average distance 0.14 cM between adjacent markers. flavonols assayed enable analysis. Across 33 components, 46 QTLs detected, explaining 11.85–47.72% phenotypic variation. physically clustered primarily distributed four groups, namely LG2, LG4, LG6, LG7. These results improve basis marker-assisted breeding guide development products.