Establishing the A. E. Watkins landrace cultivar collection as a resource for systematic gene discovery in bread wheat.
Establishing the A. E. Watkins landrace cultivar collection as a resource for systematic gene discovery in bread wheat.
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DOI：
10.1007/s00122-014-2344-5
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发表时间：
2014-08
影响因子：
5.4
通讯作者：
Griffiths, Simon
中科院分区：
文献类型：
--
作者：
Wingen, Luzie U.;Orford, Simon;Goram, Richard;Leverington-Waite, Michelle;Bilham, Lorelei;Patsiou, Theofania S.;Ambrose, Mike;Dicks, Jo;Griffiths, Simon
在A. E. Watkins面包小麦地方品种中发现了高水平的遗传多样性。利用基因型信息确定种群结构，开发种质资源。20世纪30年代，a.e.沃特金斯从伦敦贸易委员会的官方渠道获得了面包小麦的地方品种（Triticum aestivum L.），其中许多品种来自32个国家的当地市场。目前收藏的826个地方品种的地理分布，这里被称为沃特金斯收藏，涵盖了许多亚洲和欧洲国家以及一些非洲国家。利用41个微卫星标记对这些品种进行基因分型，研究其遗传多样性和群体结构。发现了高水平的遗传多样性，比1945年至2000年期间现代欧洲冬面包小麦品种的遗传多样性还要高。此外，尽管微弱，沃特金斯收集的人口结构揭示了九个祖先的地理分组。在商业小麦育种开始之前，祖先群体之间的遗传物质交换可能是对此的一种解释。关于沃特金斯收集的多样性知识的增加被用于开发小麦研究和育种资源，其中一个是核心集，它捕获了检测到的大多数遗传多样性。对遗传多样性和种群结构的了解以及育种资源的可用性应该有助于加速对沃特金斯收集的新等位基因的检测。本文的在线版本（doi:10.1007/s00122-014-2344-5）包含补充资料，仅供授权用户使用。
A high level of genetic diversity was found in the A. E. Watkins bread wheat landrace collection. Genotypic information was used to determine the population structure and to develop germplasm resources. In the 1930s A. E. Watkins acquired landrace cultivars of bread wheat (Triticum aestivum L.) from official channels of the board of Trade in London, many of which originated from local markets in 32 countries. The geographic distribution of the 826 landrace cultivars of the current collection, here called the Watkins collection, covers many Asian and European countries and some from Africa. The cultivars were genotyped with 41 microsatellite markers in order to investigate the genetic diversity and population structure of the collection. A high level of genetic diversity was found, higher than in a collection of modern European winter bread wheat varieties from 1945 to 2000. Furthermore, although weak, the population structure of the Watkins collection reveals nine ancestral geographical groupings. An exchange of genetic material between ancestral groups before commercial wheat-breeding started would be a possible explanation for this. The increased knowledge regarding the diversity of the Watkins collection was used to develop resources for wheat research and breeding, one of them a core set, which captures the majority of the genetic diversity detected. The understanding of genetic diversity and population structure together with the availability of breeding resources should help to accelerate the detection of new alleles in the Watkins collection. The online version of this article (doi:10.1007/s00122-014-2344-5) contains supplementary material, which is available to authorized users.
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