Year: 2020
Type: preprint
Abstract: Background:Sesame is an important and ancient oilseed crop. Sesame seed coat color is an extremely important agronomic trait, and is related to biochemical functions involved in protein and oil metabolism, and antioxidant content. Because of its complication, the genetic basis of sesame seed coat color remains poorly understood.Results:Genome-wide association study (GWAS) using 42,781 single-nucleotide polymorphisms (SNPs) was performed with a diverse association-mapping panel comprising 366 sesame germplasm lines in 12 environments. In total, 224 significant SNPs (P< 2.34×10−7) explaining approximately 13.34% of the phenotypic variation on average were identified, and 35 significant SNPs were detected in more than 6 environments. Out of 224 significant SNPs, 22 were located in the confidence intervals of previous reported quantitative trait loci. A total of 92 candidate genes were identified in the vicinity of the 4 SNPs that were most significantly associated with sesame seed coat color.Conclusions:The results in this paper will provide new insights into the genetic basis of sesame seed coat color, and should be useful for molecular breeding in sesame.
Institution: Henan Academy of Agricultural Sciences
Language: English
Topic: Sesame and Sesamin Research
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: green
OpenAlex ID: W4254842840