4种鳞毛蕨科植物中总酚含量的分析

对 4种鳞毛蕨科常见植物中酚类物质进行了分析及含量测定 .样品经乙醇—三氯乙酸的混合液提取 ,以 Folin-酚法于波长 5 0 0 nm下测定 ,以没食子酸为标准计算样品中总酚物质的含量 .结果表明 4种鳞毛蕨科植物中的总酚含量较高 ,以 Folin-酚法测定蕨类植物中酚类物质的含量是可行的 ,且在 90 min内显色稳定性好 ,平均回归率为 1 1 2 .85± 3.4 5 % ,基本符合实验的要求     

复叶耳蕨属分类研究综述

复叶耳蕨属是鳞毛蕨科中的一个重要的属,在其近一个半世纪的研究历史中,它的拉丁属名经历了数次变更,属的形态界定逐步明确,尽管仍然存在一定的争议,但本属概念已经得到广泛接受。文中评价了该属的主要的分类性状,其主要依据根状茎习性和叶柄基部鳞片特征,将本属分为4个组,并编制了分组检索表。过去,该属的种类描述相当混乱,文献中已经存在180多个种名,但估计种数约有近70个,绝大部分种类分布在中国长江流域及以南各省区和日本。本属的近期研究文献也以中国和日本为多,中国的研究主要集中在新种描述和植物志的编写方面;日本学者对本属的研究则是多方面的。作者认为,今后应加强对中国和日本标本的比较研究,并运用细胞学和分子生物学手段,逐步澄清种类的混乱,建立一个本属的自然分类系统。     

五种鳞毛蕨科植物总黄酮含量及抗氧化活性分析

采用铝盐显色分光光度法研究了5种鳞毛蕨科植物的总黄酮含量,并对其抗氧化活性进行分析.结果表明:所研究的5种鳞毛蕨科植物的总黄酮含量在5%~8%;狭顶鳞毛蕨的总黄酮含量最多(8.24%),其次是半岛鳞毛蕨(6.53%)和戟叶耳蕨(5.2%),变异鳞毛蕨(5.01%)和暗鳞鳞毛蕨(5.01%)的总黄酮含量最低;5种鳞毛蕨科植物的黄酮提取液具有良好的抗氧化能力,且提取的黄酮类化合物的添加量在实验剂量范围内与其抗氧化活性(铁还原力、DPPH自由基清除活性、ABTS+清除活性)呈正相关.为鳞毛蕨科植物资源的开发利用提供参考.     

东北蕨类植物配子体发育的研究 Ⅺ．鳞毛蕨科

本文研究了鳞毛蕨科、鳞毛蕨属的粗茎鳞毛蕨、华北鳞毛蕨和远东鳞毛蕨及耳蕨属的鞭叶耳蕨和棕鳞耳蕨的配子体发育过程，从而比较它们种、属之间的主要特点和区别。     

Inclusion of the Eastern Asia endemic genus Sorolepidium in Polystichum （Dryopteridaceae）： Evidence from the chloroplast rbcL gene and morphological characteristics

The taxonomic status of the Eastern Asia endemic Sorolepidium is controversial. Some authors accept it as member of the large diverse genus Polystichum, whereas others suggest that it is an independent genus separated from the later by the exindusiate sorus and the absence of aristate teeth at the pinnae margins. Here we infer phylogenetic relationship of Sorolepidium using DNA sequences of the chloro-plast rbcL gene. Phylogenies were inferred using maximum-parsimony, maximum-likelihood, and Bayesian inference methods. Molecular data establish that Sorolepidium is deeply nested within the large genus Polystichum and has a close relationship with P. duthiei and P. lachenense in the model-based analyses. The Kimura 2-parameter distances of the rbcL sequences between S. glaciale and P. duthiei and P. lachenense were 0.1 and 0.2%, respectively. Furthermore, S. glaciale differed from P. duthiei by a single nucleotide in their rbcL sequences. Close relationships between S. glaciale and P. duthiei and P. lachenense are also supported by the shared spore ornamentation with echinate fenes-trate folds.