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张林斌, 赵南先, 葛学军. 广义飞蛾藤属(旋花科)的分支系统学分析[J]. 植物科学学报, 2003, 21(4): 308-315.
引用本文: 张林斌, 赵南先, 葛学军. 广义飞蛾藤属(旋花科)的分支系统学分析[J]. 植物科学学报, 2003, 21(4): 308-315.
ZHANG Lin-Bin, ZHAO Nan-Xian, GE Xue-Jun. Cladistic Analysis of the Genus Porana s. l. (Convolvulaceae)[J]. Plant Science Journal, 2003, 21(4): 308-315.
Citation: ZHANG Lin-Bin, ZHAO Nan-Xian, GE Xue-Jun. Cladistic Analysis of the Genus Porana s. l. (Convolvulaceae)[J]. Plant Science Journal, 2003, 21(4): 308-315.

广义飞蛾藤属(旋花科)的分支系统学分析

Cladistic Analysis of the Genus Porana s. l. (Convolvulaceae)

  • 摘要: 基于33个广义的形态学性状,对广义飞蛾藤属Poranas.l.进行了分支系统学分析。经过简约性分析,得到了10个同等简约的分支树。10个同等简约树的严格一致化树表明,广义飞蛾藤属是一较为自然的分类群。与广义飞蛾藤属的孢粉学、种皮微形态学研究结果一致,分支分析的结果不支持将广义飞蛾藤属拆分为4个或5个独立的属,应在属内划分分类等级。在整个形态分支树中广义飞蛾藤属4个亚属呈并列2个分支,其中飞蛾藤亚属(subg.Porana)和白花叶亚属(subg.Poranopsis)形成姐妹群构成一分支,三翅藤亚属(subg.Tridynamia)和棒状亚属(subg.Dinetus)以姐妹群的关系构成另一支。鉴于分支分析的Bootstrap支持率不高,广义飞蛾藤属范畴的最后界定和属内等级的划分仍有待于进一步研究。

     

    Abstract: The genus Porana s. l. was cladistically analyzed based on 33 morphological characters. Using the genus Cordisepalum as out group, 10 eaqually most parsimonious cladograms of Porana were yielded from cladistic analysis. The strict consensus tree showed that Porana s. l. was a natural taxon, and it was consistent with the results on pollen morphology and micromorphology of seed surface. Most taxonomists disagree to divide it into 4 or 5 genera proposed by some taxonomists. In the consensus tree consisted of two paratactic clades, one showed that subg. Porana and subg. Poranopsis have the sister-group relationship, and in the other clade the subg. Tridynamia was resolved as sister to the subg. Dinetus. Further studies are needed before an unambiguous phylogeny is achieved for the broad sense genus.

     

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