Monographic study of Impatiens drepanophora group

为了阐明凤仙花及其近缘种的分类地位和分类地位，以活体标本和标本馆标本为基础，对喜马拉雅和亚洲其他地区描述的所有分类群进行了形态和遗传学研究。首次对凤仙花属植物进行了基于叶绿体和核DNA的系统发育分析。利用rbcL和trnL与trnF间隔区的组合序列构建了凤仙花属的第一个分子系统发育图。通过这一分析绘制的系统发育树揭示了两个大的单系支系的存在：一个只由喜马拉雅物种组成，另一个物种分布在世界各地。系统发育树与染色体数目密切相关；喜马拉雅分支的x=7或9；另一个分支的x=8或10。在性状进化方面，该树支持基本染色体数目和花序形态的进化趋势。花被片形态多样性是物种分类中的一个重要特征，但与乔木的相关性不明显。对采自喜马拉雅等亚洲地区的标本进行调查，并解剖花朵，观察花瓣和花瓣的形状和大小。在活体标本和标本馆标本的基础上观察了花序的形态。对花和花序的形态进行比较，以发现它们的多样性和进化趋势，揭示它们的多样性。所有从中国描述和记录的种都被初步修订并载入《中国的植物志》一卷中(吴振英和雷文，编者)。山上的一个种。Kinabalu被描述为一个新物种。此外，还公布了凤仙花、库纳巴鲁凤仙花和西马来其他已知物种的染色体数目。

To clarify the taxonomic status and taxonomy of Impatiens drepanophora and its allied species all the taxa described from Himalaya and other Asian regions were morphologically and genetically studied based on living and herbarium specimens.1. Phylogenetic analyses of genus Impatiens based on chloroplast and nuclear DNA were done for the first time. The combined sequence of rbcL and the spacer between trnL and trnFwere used to generate the first molecular phylogeny of Impatiens. The phylogenetic tree drawn by this analysis revealed the presence of two large monophyletic clades: one consisting only of Himalayan species and the other of species distributed in various areas of the world. The phylogenetic tree is strongly correlated with chromosome numbers; the Himalayan clade has x=7 or 9; the other clade has x=8 or 10. With regard to character evolution, the tree supported evolutionary trends in basic chromosome numbers and inflorescence morphology. Morphological diversification of the lower sepal, which is a significant characters used in the classification at the species level, does not clearly correlate with the tree.2. The specimens collected in Himalaya and other Asian regions were investigated, and dissected flowers to observe the shape and size of sepals and petals.3. The morphology of inflorescences were observed based on the living and herbarium specimens.4. The morphology of the flowers and inflorescences were compared to detect the diversitythe evolutionary trends and reveal the diversity of them.5. All the species described and recorded from China were preliminary revised and described in a volume of `Flora of China' (C. Y. Wu&P. H. Raven, redactors).6. A species of Mt. Kinabalu was described as a new species. The choromosome numbers of this, Impatiens kunabaluensis, and other species known from West Malesia were also published.