摘要
本研究选用 1 5种东北藓类植物 ,其中塔藓、赤茎藓、垂枝藓、拟垂枝藓、羽平藓、木藓、万年藓等为北半球广泛分布的大型藓类 ,而褶叶藓、粗枝藓、球蒴金发藓等则是东亚特有种。在野外调查和采集的基础上 ,进行RAPD分析 ,旨在从DNA水平上对它们的亲缘关系和分类问题加以研究 ,为它们的分类问题和亲缘关系提供分子证据。结果 :从分子水平上进一步验证了 1 5种东北藓类植物形态分类的正确性。不同种类分别聚在金发藓目 (Polytrichinales) ,变齿藓目 (Isobryales)和灰藓目 (Hypnobryales)中 ,与现采用分类系统一致。东北特产属褶叶藓属 (Okamuraea)和粗枝藓属(Gollania)与垂枝藓科 (Hyitidiaceae)植物关系较近 ,而赤茎藓 (Pleurozium)与绢藓 (Entodon)有一定亲缘关系。因此 ,将赤茎藓置于塔藓科 (Hylocomiaceae)是合适的。
The random amplified polymorphic DNA(RAPD) was used to analyse the phylogenetic relationship among fifteen mosses species from Northeast China in which Hylocomium Splendens, Pleurozium schreberi, Rhytidium rugosum, Rhytidiadelphus squarosus, Neckera pennata, Thamnobryum alopecurum and Climacium dendroides distribute extensively in northern semiglobe, and Okamuraea brachydictyon, Gollania varians and Polytrichum sphaerothcium are representative species endemic to East Asia. The results showed that the RAPD results support the classification of these mosses based on morphology. All the 15 mosses species were clustered in Polytrichinales, Isobryales and Hypnobryales. Okamuraea and Gollania have a closer phylogenetic relationship with Hyitidiaceae. Pleurozium has a closer phylogenetic relationship with Entodon, so it is suitable for Pleurozium to be placed in Hylocomiaceae.
出处
《植物研究》
CAS
CSCD
北大核心
2004年第4期477-481,共5页
Bulletin of Botanical Research
基金
国家自然科学基金 (项目编号 3 0 170 0 76)
