论文部分内容阅读
利用水平板淀粉凝胶电泳技术检验了板栗８个居群在６个同工酶位点（Ｐｅｒ２、Ｇｏｔ２、Ｅｓｔ２、Ｇｐｉ２、Ｉｄｈ１、Ｉｄｈ２）上的遗传变异（多态位点百分率为９７．９％，平均等位基因数为２．５４，平均预期杂合值为０．４５２）。在同一水平上，其遗传多样性水平显著高于欧洲栗。总的基因多样性中，８９．２％发生在居群内，１０．８％发生于居群间，各居群之间的遗传距离为０．０３６～０．３９４，有些居群分化较大，尤其在个别位点上更为明显。初步研究表明，其丰富的遗传变异及其高水平的分化度可能与其生境的多样性、风媒异交等因素造成的长距离的基因漂变有关。
Using horizontal plate starch gel electrophoresis test 8 populations of chestnut in 6 isozyme sites (Per 2, Got 2, Est 2, Gpi 2, Idh 1, Idh 2) Genetic variation (percentage of polymorphic loci was 97.9%, average number of alleles was 2.54, average expected heterozygosity was 0.452). At the same level, the level of genetic diversity was significantly higher than that of European chestnut. Of the total genetic diversity, 89.2% occurred in the population, 10.8% occurred in the population, the genetic distance between the populations was 0.036-0.394, and some of the populations were highly differentiated , Especially at individual sites. Preliminary studies have shown that its rich genetic variation and its high level of differentiation may be related to its habitat diversity, wind and disease disruption and other factors caused by long-distance genetic drift.