鹅掌楸( Liriodendron chinense ( Hemsl .) Sarg.) 10 个居群中 10 种酶系统 16 个位点上的等位基因电泳结果表明:鹅掌楸种内遗传多样性水平较高, 种内遗传变异的 20.6 %分布在居群间,79.4%分布在居群内, 东部分布亚区的多样性水平和基因流低于西部, 居群间分化程度则高于西部;其遗传多样性随纬度增加而递减, 形成南高北低格局。 针对鹅掌楸居群遗传结构的形成原因及现状提出了适宜的保护措施。
 

The electrophoretic results of allozymes on 16 loci encoding 10 enzyme systems in 10
Liriodendron chinense ( Hemsl.) Sarg .populations indicated :L .chinense is highly genetically diversified .20 .6 % of its genetic variation distributed among populations, while other 79 .4 % within populations .The diversity level and the estim ate of gene flow in the eastern sub-division are lower than the western, and the population differentiation mo re critical .The genetic diversity of L .chinense is declining along the latitude, which fo rms the southern-high and northern-low pattern of its genetic variation .