摘要
分析华东地区６个青冈种群的遗传变异与环境变量的关系．结果表明研究范围内温度因子、降水和纬度之间显著相关．过氧化物酶的等位基因频率与环境因子（尤其是降水和温度因子）高度相关，ＰＯＤ－１的等位基因Ａ和Ｂ的频率在干旱、热量条件差的种群中较高，而ＰＯＤ－２中的等位基因Ｄ的频率正好相反．其他位点的一些等位基因频率与环境因子也存在相关性．以上结果表明气候因子在青冈的遗传分化和遗传变异维持中起重要作用．
Six populations of Cyclobalanopsis glauca in East China were selected to examine the relationships between environmental factors and genetic variation. The results indicated that temperature factors, precipatation and latitude related each other significantly. Significant positive relationship was observed between number of effective alleles and expected heterozygosity. Allelic frequencies of peroxidase loci highly related with environmental factors, especially with precipatation and temperature factors. Frequencies of allele A and B were high in populations with xeric and worse thermal condition, contrary to that of allele D of locus POD 2. Frequencies of some alleles of other loci were also associated with environmental factors. Above results showed that climatic factors plays an important role in genetic differentiation and maintenance of genetic variation of C. glanca.
出处
《厦门大学学报（自然科学版）》
CAS
CSCD
北大核心
1997年第5期774-780,共7页
Journal of Xiamen University：Natural Science
基金
国家自然科学基金
关键词
等位酶变异
环境因子
青冈
种群
遗传分化
Allozymic variation,Environmental factors, Selection pressure, Cyclobalanopsis glauca
