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Systematics of Arisaema section Fimbriata (Araceae)

天南星属分类学（天南星科）

基本信息

批准号：
05640785
负责人：
MURATA Jin
金额：
$ 1.28万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1993
资助国家：
日本
起止时间：
1993 至 1994
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05640785/
关键词：
Araceae Arisaema Phylogeny Classification rbcL tropics 系統分類熱帯アジア

项目摘要

A revision of specific delimitation : To clarify the characteristics and distinction for each species, specimens of the University of Tokyo as well as of other herbaria in Japan and also loand specimens from herbaria outside Japan, K,L and P for example, were comparatively studied. Critical comparison wes made especially on the species of S.China and Indo-China. Chromosome numbers of living materials were also examined. As a result, 25 species were recogniszed as distinct in sect. Fimbriata, which were enumerated with descriptions and a key to the species.Determination of rbcL gene sequence : Using living materials cultivated in the Botanical Gardens, University of Tokyo, and also samples obtained through overseas expedition granted by the Grant-in-Aid for Scientific research, determination of rbcL gene sequence was made. Arisaema filiforme, A.laminatum, A.roxburghii, A.calcareum, A.grapsospadix, A.prazeri, A.petelotii of sect. Fimbriata, eight species of other sections Arisaema, and many other species of Araceae as outgroups were examined. As a consequence of computer analysis based on the data obtained, a phylogenetic tree was constructed. It was suggestful to understand the evolution of Araceae. The monophyly of tribe Areae, including Arisaema, were suppoted with high level of confidence.sect. Fimbriata was suggested to be paraphyly, rather than monophyly.

具体界线的修订：为了明确每种的特征和区别，对东京大学标本和日本其他标本馆的标本以及日本以外标本馆的标本进行了比较研究，例如K，L和P。特别是对华南和中南半岛的种类进行了比较。还检查了活体材料的染色体数目。rbcL基因序列的测定：利用东京大学植物园栽培的活体材料和科学研究补助金资助的海外考察样品，测定了rbcL基因序列。对天南星属流苏组的丝状天南星A.filiforme、层状天南星A.laminatum、金线莲A.roxburghii、石灰天南星A.calcareum、笔石天南星A.grapsospadix、普拉泽天南星A.prazeri、小天南星A.petelotii和天南星属其他组的8种天南星A.arisaema及天南星科其他许多种天南星属植物作为外类群进行了研究。作为基于所获得的数据的计算机分析的结果，构建了系统发育树。这对了解天南星科植物的进化具有重要意义。包括天南星在内的天南星族的单系性得到了较高的支持，流苏组的单系性被认为是并系性，而不是单系性。