摘要
大年结实指一个植物种群在不同年份同时产生具有很大变化的种子产量 ,这种生殖特征普遍存在于多年生植物中 ,是植物有性生殖过程中的一个重要进化对策 .植物种子产量的周期性变化和种群内不同个体结实的同步程度是植物大年结实的两个重要特征 .本文对大年结实的有关假说以及各自依据和缺陷进行了分析 ;讨论了植物种群内不同个体生殖同步性的程度和时间尺度的延续和空间尺度的异质性 .
Mast seeding means that the plants of a population have a highly variable seed production in different years synchronously, and it is widely existed in perennial plants. The periodic variation of seed yield and synchrony of seed production among individuals are the key characteristics. Several hypotheses, including evolutionary bases and limitations of mast seeding, were reviewed in this paper. Moreover, the synchronous degree among individuals was discussed, and the temporal permanence and spatial heterogeneity were emphasized.
出处
《应用生态学报》
CAS
CSCD
2003年第1期117-120,共4页
Chinese Journal of Applied Ecology
基金
国家重点基础研究发展规划项目 (G2 0 0 0 0 46 80 1) .
