中国沙棘的表型结构与种群变异

The Phenotype Structure and Population Variation of Chinese Hippophae

在中国沙棘天然分布区内,自西至东选择青海省大通县东峡林区到河北省丰宁满族自治县等5个有代表性的地方,用样地调查与统计分析的方法,研究了中国沙棘主要经济性状的变异及其组配情况,比较了各种群的异同;统计了各主要经济性状变异的基本参数;揭示出各性状在群体内可自由组配的现象。认为5个种群可划分为两个地理群,地理群内相对一致,地理群间差异较大。种群变异表现为性状出现频率的递交。

In the natural distribution area of Chinese Hippophae, from the west to the east, Dongxia Forest Area, Datong County, Qinghai Forest Area Qinghai Province etc. 5 representative regions were selected to study the variation of main economic features and the matching condition of Chinese Hippophae by means of sample plot survey and statistical method. Differences and similarities of different populations were compared, basical parameters of every main economic features calculated and the possibility of matching of the features in overall pointed out. It's considered that the 5 populations can be divided into 2 groups. Variations among different populations are represented by the gradient of frequency of some features.