Allozyme Variation in Natural Populations of Hinoki, Chamaecyparis obtusa (SIEB. et ZUCC.) ENDL. and Its Comparison with the Plus-trees Selected from Artificial Stands
Allozyme Variation in Natural Populations of Hinoki, Chamaecyparis obtusa (SIEB. et ZUCC.) ENDL. and Its Comparison with the Plus-trees Selected from Artificial Stands
复制标题
扁柏、扁柏 (SIEB. et ZUCC.) ENDL 自然种群中的同种酶变异。
DOI：
10.1270/jsbbs1951.47.7
复制
发表时间：
1997
期刊：
影响因子：
2.4
通讯作者：
K. Ohba
中科院分区：
文献类型：
--
作者：
K. Uchida;N. Tomaru;Chiemi Tomaru;C. Yamamoto;K. Ohba
扁柏11个自然居群的等位酶变异。et ZUCC.）ENDL。以10株日本扁柏优树为试材，与国家优树选择育种工程人工林中12组日本扁柏优树进行比较。在自然群体中，很明显，大部分的遗传变异被保留在群体内，和许多其他裸子植物一样，群体分化很低。但在Ioci、G6 p、Pod、Got-1和Pgm等4个位点的等位基因频率沿着地理分布存在遗传倾向。根据居群间的遗传距离，采用两种聚类方法，居群大多按地理位置进行了划分。通过对天然居群和优树群体间等位酶变异的比较，发现天然居群的变异在优树群体中基本保持不变。然而，在稀有等位基因的存在或不存在、等位基因的平均频率以及等位基因频率在自然群体或加号树组中的分布方面，观察到自然群体和加号树组之间的遗传差异。
Allozyme variation in 11 natural populations of hinoki, Chamaecyparis obtusa (SIEB. et ZUCC.) ENDL. was studied using 10 Ioci, and compared with that in 12 groups of hinoki plus-trees selected from artificial stands in the national project for plus-tree selection breeding. In the natural populations, it was evident that most of the genetic variation was retained within populations, and population differentiation was low, as observed in many other gymnosperms. However, there were genetic clines in allele frequencies at 4 Ioci, G6p, Pod, Got-1 and Pgm along the geographic locations of the populations. The populations were mostly separated according to the locations using two clustering methods based on genetic distances among populations. Comparison of allozyme variation between the natural populations and plus-tree groups revealed that generally the variation in the natural populations was preserved even in the plus-tree groups. However, genetic differences were observed between the natural populations and the plus-tree groups in the presence or absence of rare alleles, the mean frequencies of alleles, and the distribution of allele frequencies across the natural populations or the plus-tree groups.