Genetic dissection and fine mapping of a novel dt gene associated with determinate growth habit in sesame

• DOI: 10.1186/s12863-018-0614-y
• Publication Date: 2018-06-14T12:43:46Z
• Authors: Yanxin Zhang; Linhai Wang; Yuan Gao; Donghua Li; Jingyin Yu; Rong Zhou; Xiurong Zhang
• Keywords: Determinacy; Habit

As an important oil crop, growth habit of sesame (Sesamum indicum L.) is naturally indeterminate, which brings about asynchronous maturity capsules and causes loss yield. The genetic basis determinate in was investigated by classical analysis through multiple populations, results revealed that it controlled unique recessive gene. genotyping sequencing (GBS) approach employed for high-throughput SNP identification the F2 population, then a high density bin map constructed, 1086.403 cM length, consisted 1184 bins (13,679 SNPs), with average 0.918 between adjacent bins. Based on mapping conjunction SSR markers targeted region, novel determinacy gene mapped LG09 genome region 41 kb. This study dissected sesame, constructed new high-density Results this demonstrate we optimized to get fine-accuracy, high-resolution high-efficiency result sesame. findings provided foundation cloning were expected be applied breeding cultivars suited mechanized production.