关于茶组植物分类与演化的讨论

Discussions on Phylogenetic Classification and Evolution of Sect Thea

本文简要介绍了茶组植物形态学、细胞学和化学分类的研究现状 ,评述了主要分类系统的合理性与不足之处。作者在前人工作基础上 ,根据对茶树种质资源的多年系统研究和对原产地茶树特征和特性的全面考察 ,以子房室数、花柱分裂数和子房茸毛的有无为主要依据 ,结合花冠大小及树型、枝叶等的形态特征提出关于茶组植物分类的讨论 ,即将茶组植物分为大厂茶CamelliatachangensisF S Zhang、厚轴茶C crassicolumnaChang、大理茶C taliensis (W W Smith)Melchior、秃房茶C gymnogynaChang和茶C sinensis (L )O Kuntze等 5个种 ,在茶下分茶C sinensisvar sinensis、普洱茶C sinensisvar assamica (Masters)Kitamura、白毛茶C sinensisvar pubilimbaChang等 3个变种。列出了茶组植物分种检索表 ,描述了每个种、变种的主要形态特征和地理分布。最后 。

The current situations of morphological, cytological and chemical classification of Sect Thea were briefly introduced, and the rationality and some shortcomings of main classification systems were reviewed A new classification system of Sect Thea was put forward on the basis of the previous scientists work and the authors long term of systematic research of tea germplasms and comprehensive investigation of tea plants in the origin center areas It is mainly based on the locule numbers of ovary, the splitling number of style and the papus of ovary Meanwhile, the size of flower, the morphological characteristics of tree, branch and leaf were considered There are 5 species and 3 varieties in Sect Thea: Camellia tachangensis F S Zhang, C crassicolumna Chang, C taliensis (W W Smith) Melchior, C gymnogyna Chang, C sinensis (L )O Kuntze, C sinensis var sinensis, C sinensis var assamica (Masters) Kitamura, C sinensis var pubilimba Chang An identification key of Sect Thea was given in the paper The morphological characteristics and geographical distributions of the species and varieties were described Besides, the evolution tendency of Sect Thea was discussed