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论文作者:英语论文论文属性:职称论文 Scholarship Papers登出时间:2012-02-16编辑:lena ding点击率:3859
论文字数:900论文编号:org201202160915078777语种:英语 English地区:加拿大价格:免费论文
关键词:solidago canadensisRAPDGenetic diversityGenetic differentiation
摘要:摘要:采用分子标记(RAPDs)对上海地区入侵种加拿大一枝黄花(Solidago canadensis)种群遗传结构进行分析。采用10条引物扩增了8个种群185个个体,共得到92条条带。95%标准下,多态位点百分比为100%。平均有效等位基因数目为1.359 7,期望杂合度为0.401 8,Shannon指数为0.367 6。上海地区加拿大一枝黄花种群整体遗传多样性较高,但单个种群的遗传多样性水平中等,可能与加拿大一枝黄花有广泛种质来源,通过有性繁殖入侵,但通过无性繁殖扩张的过程有关。基因分化系数GST为0.341 5,AMOVA表明41.65%的总DNA遗传变异方差存在于种群间,说明加拿大一枝黄花种群的遗传分化程度较大,表明了其以无性繁殖为主的扩散方式。
Abstract: the molecular markers (RAPDs) on the Shanghai area of invasion Solidago canadensis (Solidago canadensis) population genetic structure analysis. Article 10 the primer amplification 8 population 185 individual, a total of 92 all roads get with. 95% under the standard, polymorphic loci percentage is 100%. Average effective alleles number is 1.359 7, expected heterozygosity was 0.401 8, Shannon index of 0.367 6. Shanghai solidago canadensis whole population genetic diversity is higher, but a single population genetic diversity level medium, may and solidago canadensis have widely germplasm sources, through the sexual reproduction invasion, but through the expansion of asexual reproduction process related. Genetic differentiation coefficient GST is 0.341 5, AMOVA shows that 41.65% of total DNA genetic variation exists in population variance between, https://www.51lunwen.org/canadathesis/2012/0216/0904336683.html explain to solidago canadensis of population genetic differentiation degree bigger, show the propagation mainly by asexual the diffusion modes.
Keywords: solidago canadensis; RAPD; Genetic diversity; Genetic differentiation
This study selection for the whole Shanghai kind of square to the field yisheng solidago canadensis for the materials, the comparative study RAPD technology, made clear the Shanghai solidago canadensis of population of different genetic diversi本论文由英语论文网提供整理,提供论文代写,英语论文代写,代写论文,代写英语论文,代写留学生论文,代写英文论文,留学生论文代写相关核心关键词搜索。