期刊论文

中文

植物科学学报

2095-0837

2008

26

5

450-453

10.3969/j.issn.2095-0837.2008.05.004

本校为第一机构

大叶苎麻组（Sect.Duretia）是荨麻科苎麻属（Boehmeria）的一个种类比较多的组,目前对该组植物的系统发育还不清楚。本研究测定了其中9种4变种的核糖体DNA的ITS序列。ITS平均长度约687bp。选取冷水花属作为外类群,根据ITS序列的差异计算出种间遗传距离。分别采用最简约法和邻接法进行系统发育分析。细野麻（Boehmeria gracilis）、赤麻（B.silvestrii）、野线麻（B.japonica）和疏毛水苎麻（B.pilosiuscula）、束序苎麻（B.siamensis）亲缘关系较近聚成一支,自展支持率为76%（MP）和89%（NJ）;密球苎麻（B.densiglomerata）、长序苎麻（B.dolichostachya）、灰绿水苎麻（B.macrophylla var.can...

Sect. Duretia is a big-sized sect. of genus Boehmeria, the phylogenetic relationship of it is not very clear. The sequences of nrDNA ITS from nine species and four varieties of sect. Duretia in Boehmeria were analyzed by PCR amplification and direct sequencing. The average sequences of PCR products were about 687 bp including ITS-1, 5.8S and ITS-2. By referring to sequence of Pilea notata, the genetic distance among varieties were calculated, MP tree and NJ tree was constructed to analyze the genetic relationships of sect. Duretia in Boehmeria....