Grant Olga M, McNeilly Tom, Incoll Lynton D
School of Biology, University of Leeds, Leeds LS2 9JT, UK.
School of Biological Sciences, University of Liverpool, Liverpool L69 7ZB, UK.
Funct Plant Biol. 2006 Mar;33(3):247-255. doi: 10.1071/FP05245.
Patterns of variation at selected isozyme loci were examined in populations of Cistus albidus L. in south-east Spain, from areas differing in precipitation and temperature, to determine whether population divergence has occurred. Total genetic diversity was high, with a high percentage of the variation being found between populations. Genetic variation between populations did not relate to climate. Populations exposed to severe summer drought did not show lower genetic diversity than populations from more benign climates. Little genetic variation was found between populations that showed variation in ecophysiological and growth responses in situ and under controlled conditions. Cluster analyses showed different patterns of between-population distances with respect to genetic, physiological and morphological data, and none of these patterns corresponded to that for between-site environmental variation.
在西班牙东南部不同降水和温度区域的白藓种群中，研究了选定同工酶位点的变异模式，以确定种群分化是否已经发生。总遗传多样性较高，且大部分变异存在于种群之间。种群间的遗传变异与气候无关。遭受严重夏季干旱的种群，其遗传多样性并不比来自气候更温和地区的种群低。在原位和受控条件下表现出生态生理和生长反应差异的种群之间，几乎没有发现遗传变异。聚类分析显示，就遗传、生理和形态数据而言，种群间距离呈现出不同模式，且这些模式均与地点间环境变异模式不对应。
