不同辣椒（Capsicum spp.）品种的群体结构。
Population structure in diverse pepper (Capsicum spp.) accessions.
机构信息
Department of Horticulture and Crop Science, The Ohio State University, Columbus, OH, USA.
Centro de Investigaciones Interdisciplinarias en Ciencias Y Humanidades, Universidad Nacional Autónoma de México, Mexico City, Mexico.
出版信息
BMC Res Notes. 2023 Feb 25;16(1):20. doi: 10.1186/s13104-023-06293-3.
BACKGROUND
Peppers, bell and chile, are a culturally and economically important worldwide. Domesticated Capsicum spp. are distributed globally and represent a complex of valuable genetic resources.
OBJECTIVES
Explore population structure and diversity in a collection of 467 peppers representing eight species, spanning the spectrum from highly domesticated to wild using 22,916 SNP markers distributed across the twelve chromosomes of pepper.
RESULTS
These species contained varied levels of genetic diversity, which also varied across chromosomes; the species also differ in the size of genetic bottlenecks they have experienced. We found that levels of diversity negatively correlate to levels of domestication, with the more diverse being the least domesticated.
背景
辣椒在世界范围内具有重要的文化和经济意义。已驯化的辣椒属植物在全球范围内分布广泛，是具有重要价值的遗传资源。
目的
利用分布在辣椒 12 条染色体上的 22916 个 SNP 标记，对代表 8 个物种的 467 个辣椒进行群体结构和多样性研究，这些辣椒从高度驯化到野生，跨度很大。
结果
这些物种的遗传多样性水平不同，而且在染色体之间也存在差异；物种之间经历的遗传瓶颈大小也存在差异。我们发现，多样性水平与驯化程度呈负相关，即多样性水平越高，驯化程度越低。
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