Identification of Genetic Loci for Sugarcane Leaf Angle at Different Developmental Stages by Genome-Wide Association Study

• DOI: 10.3389/fpls.2022.841693
• Publication Date: 2022-05-27T11:40:16Z
• Authors: Xinglong Chen; Zhenghui Huang; Danwen Fu; Junteng Fang; Xiangbo Zhang; Xiaomin Feng; Jinfang Xie; Bin Wu; Yiji Luo; Mingfeng Zhu; Yongwen Qi
• Keywords: Candidate gene; Genome-wide Association Study; Genetic Association; Saccharum officinarum; Indel; MYB

Sugarcane ( Saccharum spp.) is an efficient crop mainly used for sugar and bioethanol production. High yield high sucrose of sugarcane are always the fundamental demands in growth worldwide. Leaf angle size can be attributed to planting density, which was associated with yield. In this study, we performed genome-wide association studies (GWAS) a panel 216 core parents their derived lines (natural population) determine genetic basis leaf key candidate genes +2, +3, +4 at seedling, elongation, mature stages. A total 288 significantly loci different developmental stages (eight phenotypes) were identified by GWAS 4,027,298 high-quality SNP markers. Among them, one locus 11 all three two stages, respectively. An InDel marker (SNP Ss6A_102766953) linked narrow obtained. Overall, 4,089 located confidence interval significant loci, among 3,892 functionally annotated. Finally, 13 derivatives tagged SNPs selected marker-assisted selection (MAS). These related MYB transcription factors, auxin response serine/threonine protein kinases, etc. They directly or indirectly sugarcane. This research provided large number novel resources improvement angles simultaneously