The origin and relationships of the pepino, Solanum muricatum (Solanaceae): DNA restriction fragment evidence
The origin and relationships of the pepino, Solanum muricatum (Solanaceae): DNA restriction fragment evidence
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DOI：
10.1007/bf02866519
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发表时间：
1996-10-01
期刊：
影响因子：
2.6
通讯作者：
Kim, Y
中科院分区：
文献类型：
--
作者：
Anderson, GJ;Jansen, RK;Kim, Y
pepino（或pepino杜尔塞：Solanum muricatum）是一种受关注的驯化植物，因为它与番茄和马铃薯关系密切，因为它在国际市场上的曝光率越来越高，而且因为它是一种没有已知野生祖先的栽培种。形态学上，这南美洲本地是一个成员的茄组Basarthrum，因此，是近亲的一些安第斯野生物种。结合其他研究的结果，叶绿体和核核糖体DNA的限制性位点分析，以测定关系和pepino的潜在起源。pepino以前可能存在于野生环境中，今天可能仅由cultigens代表。然而，如果它的祖先是现存的，三个野生种-Solanum basendopogon（秘鲁），S。caripense（哥斯达黎加至秘鲁）、S. Tabanoense（哥伦比亚和厄瓜多尔）--最有可能出现的祖先。基于叶绿体DNA（cpDNA）和核核糖体DNA（rDNA）限制性连锁分析，对61个品种（包括27个pepino）进行系统发育分析，结果表明pepino具有多态性，部分品种具有独立的起源，最有力地支持S.《庄子》云：“君子之道，焉可诬也？”龙葵也可能是pepino的直接祖先，或者可能在其起源之后与pepino杂交产生一些单倍型变异。同样，S. cochoae可能与pepino杂交了。没有DNA特征支持S. basendopogon的起源。
The pepino (or pepino dulce: Solanum muricatum) is a domesticate of interest because of its close relationship to tomatoes and potatoes, because it is enjoying increasing exposure in the international market, and because it is a cultigen with no known wild ancestor. Morphologically this South American native is a member of the Solanum sect. Basarthrum, and as such, is allied to a number of Andean wild species. Darn from other studies are combined with results from restriction site analysis of chloroplast and nuclear ribosomal DNA to assay relationships and the potential origin of the pepino. The pepino may have existed in the wild previously and may be represented today only by the cultigen. However, if its ancestors are extant, three wild species-Solanum basendopogon (Peru), S. caripense (Costa Rica through Peru), S. tabanoense (Colombia and Ecuador)-emerge ns most likely progenitors. Phylogenetic analyses of 61 accessions, including 27 of the pepino, dependent on chloroplast DNA (cpDNA) and nuclear ribosomal (rDNA) restriction sire data show the pepino to be polymorphic, suggest independent origins for some of the cultivars, and most strongly support S. tabanoense as the progenitor of the cultigen. Solanum caripense also may have been a direct ancestor of the pepino, or may have hybridized subsequent to its origin with the pepino to yield some of the haplotype variation. Similarly, S. cochoae may have hybridized with the pepino. There are no DNA characters supporting the involvement of S. basendopogon in the origin.