高山植物繁育系统研究进展初探

A Preliminary Review of Studies of Alpine Plant Breeding System

本文综述了高山生命带植物繁育系统研究的最新进展。高山生命带是自然树线以上的高海拔植被区,物候影响繁育系统并导致早花和晚花的植物群体繁殖对策发生分化。由于传粉昆虫的缺乏,非生物传粉模式如自交得以进化;对于虫媒植物而言,熊蜂的高效传粉使其成为高山生命带主要的传粉昆虫;花寿命的延长弥补了昆虫访花频率低的不足。还讨论了高山生命带环境因子,如低温和雨水对植物特征的影响和植物本身的适应性。最后探讨高山植物繁育系统研究中存在的问题。

This paper deals with recent advances in plant breeding system o! alpine liie zone. The effects of phenology on breeding patterns differentiate the reproductive strategies of plant groups between the early and late anthesis. Abiotic pollination has evolved for adaptation to the condition of lacking pollinators. Because of its high pollination efficiency, the bumblebee has become a dominant pollinator in alpine life zone. Furthermore, the elongation of flower longevity compensates for the shortage of low visiting rate. Then, this paper treats of the influences of alpine environmental factors, such as low temperature and rain, on plant characteristics and the plant adaptation to this condition. Finally, the problems in studying plant breeding system in alpine life zone are also explored.