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原文連結
論文資訊
- 類型：已發表論文
- 日期：2015-11-16
摘要
The genus Cucurbita (squashes, pumpkins, gourds) contains numerous domesticated lineages with ancient New World origins. It was broadly distributed in the past but has declined to the point that several of the crops' progenitor 物種 are scarce or unknown in the wild. We hypothesize that Holocene ecological shifts and megafaunal extinctions severely impacted wild Cucurbita, whereas their domestic counterparts adapted to changing conditions via 共生 with human cultivators. First, we used high-throughput sequencing to analyze complete plastid 基因組s of 91 total Cucurbita samples, comprising ancient (n = 19), modern wild (n = 30), andmodern domestic (n = 42) taxa. This analysis demonstrates independent domestication in eastern North America, evidence of a previously unknown pathway to domestication
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