Studies on the origin, evolution and distribution of the Gramineae. I. The tribe Andropogoneae
Studies on the origin, evolution and distribution of the Gramineae. I. The tribe Andropogoneae
复制标题
禾本科植物的起源、进化和分布研究。
DOI：
--
复制
发表时间：
1958
期刊：
影响因子：
--
通讯作者：
W. Hartley
中科院分区：
文献类型：
--
作者：
W. Hartley
通过对约300个地区的禾本科植物群的研究，绘制了一幅世界禾本科植物分布图。这张地图显示，印度-马来西亚地区的部落物种相对丰富，在印度西部和印度尼西亚南部有高度集中的区域。从热带到温带，相对物种密度福尔斯迅速下降，西半球低于东半球。气候因素在决定分布格局方面起着重要作用。冬季温度在温带地区具有特殊意义，而在热带和亚热带地区，仲夏的高降雨量与仙女草族物种的相对丰富度之间存在着惊人的关系。总体而言，地理调查支持从分类学和细胞学证据中得出的关于部落起源和演变的结论，但更加强调气候是一个重要因素。仙女木亚科在东半球有着悠久的进化历史，但最近才传播到西半球，在那里它们尚未达到充分的发展。
From a study of the grass flora of some 300 regions, a world distribution map of the grass tribe, Andropogoneae, has been prepared. This map shows that the Indo-Malaysian region is relatively rich in species of the tribe, with zones of high concentration in western India and in southern Indonesia. The relative species density falls off rapidly in passing from the tropical to the temperate zones, and is lower in the western than in the eastern hemisphere. Climatic factors are of major importance in determining the distribution pattern. Winter temperatures are of special significance in temperate regions, while there is a striking relationship between high midsummer rainfall and relative abundance of species of Andropogoneae in the tropics and subtropics. In general, the geographical survey supports conclusions drawn from taxonomic and cytological evidence regarding the origin and evolution of the tribe, but with greater emphasis on climate as a significant factor. The Andropogoneae have had a long evolutionary history in the eastern hemisphere, but have spread more recently to the western hemisphere, where they have not yet attained their full development.