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首页> 外文期刊>European journal of nutrition >Evidence for two domestication events of hyacinth bean (Lablab purpureus (L.) Sweet): a comparative analysis of population genetic data
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Evidence for two domestication events of hyacinth bean (Lablab purpureus (L.) Sweet): a comparative analysis of population genetic data

机译：葫芦豆（Lablab Purpureus（L.）甜味的两种驯化事件的证据：人口遗传数据的比较分析

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Studying molecular genetic relationships can substantially contribute to the understanding of the pathways of domestication of a species. Although an increasing number of molecular genetic studies have been performed on Lablab purpureus (hyacinth bean), many covered germplasm of restricted geographic origin or limited intra-specific systematic position. Integrating the molecular diversity found with phenotypic or morpho-agronomic diversity is also deficient. This investigation combines findings of eight molecular genetic studies that include about 400 accessions of both wild and cultivated germplasm, thus providing the largest assessment of diversity in Lablab purpureus to date. In particular, results from a recent molecular investigation (Robotham and Chapman 2015) are revisited and reinterpreted by integrating them with known phenotypic diversity. Wild accessions clearly fall into two types, with characteristic pods-2-seeded and 4-seeded. The large majority of cultivated types are more closely related to 4-seeded pod-types. Certain cultivated 2-seeded pod-type accessions from Ethiopia are genetically closer to wild 2-seeded pod-types. These two major phenotypes are reflected in two chloroplast DNA haplotypes A and B. Hence, two domestication events appear to exist in L. purpureus based on this combined data. No other geographic patterns of diversity, which might assist to trace the dispersal of L. purpureus, were found as cultivated accessions predominantly fell into 2-3 major groups. In all studies, the greatest genetic diversity was found in Africa, making Ethiopia one of the probable centers of domestication.
机译：研究分子遗传关系可以基本上有助于了解物种驯化途径。尽管在Lablab Purpureus（Hyacinth Bean）上进行了越来越多的分子遗传学研究，但许多覆盖的地理来源的种质原产地或有限的特异性系统位置。整合以表型或情况 - 农学多样性发现的分子多样性也不足。该研究结合了八种分子遗传学研究的结果，包括野生和栽培种质的约400种，从而为迄今为止提供了Lablab Purpureus的多样性的最大评估。特别是，通过将它们与已知的表型多样性集成来重新审视并重新诠释来自最近分子调查（Robotham和Chapman 2015）的结果。野生戒断清楚地分为两种类型，具有特征豆荚-2-播种和4种。大多数栽培类型与4种子荚类型更密切相关。来自埃塞俄比亚的某些栽培的2种荚型型涂抹于遗传上更接近野生的2种荚型。这两种主要表型反映在两种叶绿体DNA单倍型A和B中。因此，基于该组合数据的L. purpureus似乎存在两个驯化事件。没有其他多样性的地理模式，这可能有助于追踪L. purpureus的分散，以培养的饲养落入2-3个主要群体。在所有研究中，在非洲发现最大的遗传多样性，使埃塞俄比亚成为可能的驯化中心之一。

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