从传粉模式、花序与壳斗特征来看壳斗科的演化
Evolution of pollination modes, inflorescence and cupule features of Fagaceae
云南民族大学学报:自然科学版,2015,24(1):19-24

陈曦 CX

摘要


壳斗科目前包括10个属,1000多个物种,是重要的经济类群.结合化石证据、分子系统发育学和形态学,壳斗科的进化研究主要集中于3个关键的生殖特征:传粉模式、花序结构和壳斗类型.从复杂到简单花序,虫媒到风媒传粉,以及二歧聚伞到花朵壳斗的演化是壳斗科进化的3个代表特征,与壳斗科的迁移与扩散过程息息相关.其中,具有先进风媒传粉和特化花序的栎属,与保持传统虫媒传粉和复杂花序的石栎属同时具有花朵壳斗这一现象是值得探讨的进化学问题. Ten genera and over1000species of Fagaceae are widely distributed in the northern hemisphere. The studies on the evolution of Fagaceae have focused on three main research aspects: the evolution of pollination modes, inflorescence and cupule. These three aspects are closely related to the migration and distribution of Fagaceae. So far, simplified inflorescence, anemophilous pollination and flower cupule are identified as apomorphies in the evolution of Fagaceae. However,why Quercus and Lithocarpus,which share the advanced flower cupule with extremely different inflorescences and pollination modes, remain unexplained. Therefore, combining fossil evidences, morhoplogical and phylogenetic is crucial to clarify the evolution connections among pollination modes, inflorescence and cupule of Fagaceae.

参考



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