Taxonomy of tepary bean and wild relatives as determined by amplified fragment length polymorphism (AFLP) markers
Taxonomy of tepary bean and wild relatives as determined by amplified fragment length polymorphism (AFLP) markers
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DOI：
10.2135/cropsci2005-12-0475
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发表时间：
2006-07-01
期刊：
影响因子：
2.3
通讯作者：
Blair, Matthew W.
中科院分区：
文献类型：
--
作者：
Carmenza Munoz, L.;Duque, Myriam C.;Blair, Matthew W.
毛豆(Phaseolus acutifolius A.Gray)是一种来自索诺兰沙漠的低降雨量作物，被认为多样性较低；然而，它与野生近亲的关系却鲜为人知。本研究利用AFLP分子标记对147份种质资源进行了评价，目的是(1)建立针叶菜属与其他组之间的分类关系；(2)了解种皮菜豆的驯化情况。所分析的10种植物的结构与目前公认的切面相对应：光滑菜豆和新月菜豆与菜豆和球果切面的距离相等，而Rugoi切面包括狭叶菜豆、卡特里菜豆和丝状菜豆。我们还比较了普通菜豆(Phaseolus Common garis L.)和利马豆(P Luatus)，在针叶组内观察到差异。野生近缘菜豆(Phaseolus Parvifolius)持久地从栽培和野生花被片的大部分中分离出来，验证了它作为一个独立物种的地位；而在野生种质中，沿着叶的变异没有明显的分组。根据我们的结果，墨西哥两个州之一，锡那罗亚州或哈利斯科州，可能是驯化中心，尽管不能放弃多个驯化事件的假设。此外，驯化的种皮菜豆很可能来自野生型的var。Acutifolius，而不是var的基因型。特努弗利乌斯。
Tepary bean (Phaseolus acutifolius A. Gray), a low-rainfall crop from the Sonoran desert, is thought to have low diversity; however, its relationship to its wild relatives is poorly understood. In this study, a total of 147 accessions were evaluated by means of AFLP markers to (i) establish the taxonomic relationships within and between the Acutifolii and other sections and (ii) to understand tepary bean domestication. The structure among the 10 species analyzed corresponded to currently recognized sections: Phaseolus glabelus and Phaseolus lunatus L. were equally distant from the phaseoli and coccinei sections and the rugosi section included Phaseolus angustissimus, Phaseolus carteri and Phaseolus filiformis. We also compared the gene pool differences for common (Phaseolus vulgaris L.) and lima bean (P lunatus) with differences observed within the Acutifolii section. The wild relative, Phaseolus parvifolius persistently separated from the bulk of both cultivated and wild tepary, validating its status as a separate species; while within the wild accessions, there was no obvious grouping along the foliar variants. On the basis of our results, one of two Mexican states, Sinaloa or Jalisco, could have been the domestication center, although the hypothesis of multiple domestication events cannot be discarded. Furthermore, domesticated tepary bean was most likely derived from wild genotypes of var. acutifolius rather than genotypes of var. tenuifolius.