SEEDLING DYNAMICS AND LIFE HISTORIES IN CLONAL PLANTS
SEEDLING DYNAMICS AND LIFE HISTORIES IN CLONAL PLANTS
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DOI：
10.2307/3565427
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发表时间：
1989-06-01
期刊：
影响因子：
3.4
通讯作者：
ERIKSSON, O
中科院分区：
文献类型：
--
作者：
ERIKSSON, O
通常认为，在许多无性系植物中，从幼苗中募集基因是不常见的。本研究考察了在不同生长形式和扩散特征、生活在不同栖息地的物种中，新基因在已建立的成年基因种群中被吸收的程度。在收集到信息的68个物种中，有40%的物种在已建立的种群中报告了苗木补充的证据。成体种群内的幼苗建立在草原物种中比在林地物种中更常见，在地上无性生长的物种中比在地下无性生长的物种中更常见，在缺乏促进远距离种子传播特征的物种中比在具有这种特征的物种中更常见。在具有游击和密集生长形式的植物之间，没有发现幼苗招募模式的差异。根据克隆植物在已建立种群中被幼苗吸收程度的变异谱假设，对克隆生活史、基因种群的结构和动态进行了预测。
Recruitment from seedlings is generally considered to be infrequent in many clonal plants. This study examines the extent to which new genets are so recruited within established populations of adult genets in species with different growth form and dispersal characteristics, and living in different habitats. In 40% of the 68 species for which information was compiled, evidence for seedling recruitment in established populations was reported. Seedling establishment within populations of adult genets was more common in species inhabiting grasslands than among woodland species, in species growing clonally above ground than in species growing clonally below ground, and it was more common in species lacking features that promote long distance seed dispersal than among species that posses such features. No differences was found in the pattern of seedling recruitment between plants possessing guerilla vs phalanx growth forms. Of the basis of hypothesized spectrum of variation in the extent clonal plants recruit by seedlings in established populations, predictions are made concerning clonal life histories, and structure and dynamics of genet populations.