查询词典 Bryaceae

The common habitat of bryophytes is restricted to dankness, but some bryophytes, such as the species of Pottiaceae, Grimmiaceae, Bryaceae and so on, are able to survive in arid and semi-arid areas with strong ability of drought tolerance.

苔藓植物一般生活在阴湿的地方，但也有不少种类具有极强的耐旱性，在干旱和半干旱地区也有分布。

The molecular systematics of Bryaceae is new focus in the study on moss. RAPD has been widely used for molecular systematics, and it's an important technique in phylogeny analysis.

真藓科Bryaceae植物的分子系统学研究是藓类植物研究中的新热点，RAPD是分子系统学研究中被广泛采用的一项重要技术。

Type genus of the Bryaceae: mosses distinguished by mostly erect and tufted gametophytes and symmetrical short-necked capsules.

真藓科的模式属；一种以其大多数直且成簇状的配偶体和对称的短颈蒴果为特征的苔藓。

The polymorphic profile could reflect the polymorphism of the taxa and related taxa. RAPD can provide some molecular proof for Bryaceae's phylogeny. There is no need to study deeply on Phylogenetic relationships of Bryaceae.

可见RAPD可以为真藓科Bryaceae植物的系统发育研究提供分子证据，真藓科Bryaceae植物的系统发育关系有待进一步研究。

The placement of Pohlia, the status of Rhodobryum genera and the phylogenetic relationship of several generas within Bryaceae are conflictive. In this study, the optimum random amplified polymorphic DNA reaction system for Bryaceae was built, then the RAPD profile of Bryaceae was construct.

在真藓科Bryaceae中，丝瓜藓属Pohlia的位置、大叶藓属Rhodobryum属的地位和真藓科Bryaceae内几个属的系统排列关系一直存在争议。

The circumscription of the Minaceae, phylogenetic relationships of genera and its reative were evaluated using morphology and molecular data of rbcL and trnL-F gene of the chloroplast genome.A total of 4 genera and 19 taxa were examined in this study.And some data of Bryaceae were downloaded from Genebank for this analysis. Phylogenetic trees obtained from neighbour jioning and maximum parsimony methods.

本研究用直接测序法测定了提灯藓科4属19种植物的rbcL和trnL-F基因序列，并从Genebank中下载了该科和真藓科的部分基因序列，采用邻接法和最大简约法分别构建了rbcL和trnL-F两个基因片段的系统树，并结合形态方面的分支分析，探讨了提灯藓科的范畴、科内各属的亲缘关系及与其临近科间的关系。

In the RAPD system of Bryaceae the optimal concentration of template DNA was 2ng/μl, primer 0.4μmol/L, dNTP 0.2mmol/L, Mg2+ 2mmol/L, Taq DNA polymerase 1.25U, total volum 25μl. Several DNA samples were selected to choose the compatible primers.

通过单因素和正交试验对影响RAPD的因素进行考查，建立了优化的RAPD反应体系：dNTP为0.2mmol/L，随机引物0.4μmol/L，Taq DNA聚合酶1.25U，Mg2+为2mmol/L，模板DNA为50ng，扩增体系为25μl。

Of 6 families (Pottiaceae, Bryaceae, Brachytheciaceae, Thuidiaceae, Ditrichaceae and Entodontaceae) were found, 59% of which was Pottiaceae as a dominant family.

经野外采样及鉴定，发现在云南东川汤丹铜矿分布着6科（丛藓科、真藓科、青藓科、羽藓科、牛毛藓科和绢藓科）16属（扭口藓属、净口藓属、对齿藓属等等）22种苔藓植物，其中59%是丛藓科植物，为优势科。

The result from phylogenetic trees created respectively by MP, NJ and UPGMA indicates that Bryaceae and Bryum are not monophyletic. The definition of some groups of Bryaceae and Bryum is doubtful in traditional classification based on morphological data. The analyses approves that Pohlia is more closely related to Mniaceae than Bryaceae, which supports placement of Pohlia in Mniaceae from Bryaceae based on DNA sequence data.

系统发育分析的结果显示：丝瓜藓属Pohlia更接近于提灯藓科Mniaceae而远离真藓科Bryaceae的类群，支持Cox等分子序列证据将丝瓜藓属Pohlia放在提灯藓科Mniaceae的安排；大叶藓属Rhodobryum与真藓属Bryum作为姊妹群存在，不支持Ochi将其作为真藓属Bryum内一个亚属的安排。

Rhodobryum appears as sister of Bryum, which suggests that Rhodobryum ought to rank in Bryum genera. It may not be suitable to recognize Rhodobryum as subgeneras in Bryum.

真藓科Bryaceae和真藓属Bryum均为多系群，认为传统分类对一些类群的划分存在争议。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。