Monographic study of Impatiens drepanophora group

为明确凤仙花（Impatiens drepanophora）及其近缘种的分类地位和分类学，对喜马拉雅地区和亚洲其他地区所描述的凤仙花（Impatiens drepanophora）及其近缘种进行了形态学和遗传学研究。本文首次对凤仙花属植物进行了叶绿体和细胞核DNA的系统发育分析。利用rbcL的组合序列和trnL与trnf1之间的间隔序列建立了凤仙花的第一个分子系统发育。通过这种分析绘制的系统发育树揭示了两个大的单系进化枝的存在：一个只由喜马拉雅物种组成，另一个由分布在世界各地的物种组成。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；另一个分支有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。下萼片的形态多样化是在种水平上分类的重要特征，但与树的相关性不明显。对在喜马拉雅和亚洲其他地区采集的标本进行了调查，并对花进行解剖，观察萼片和花瓣的形状和大小。利用活标本和标本馆标本对花序形态进行了观察。通过对花和花序形态的比较，检测其多样性和进化趋势，揭示其多样性。在《中国植物志》（C. Y. Wu&P）一卷中，对中国已描述和记录的所有物种进行了初步修订和描述。编辑瑞文（H. Raven）。基纳巴卢山的一种被描述为新种。这，凤仙花kunabaluensis，和其他已知的物种从西马来西亚也发表了染色体数目。

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.