金缕梅科

DNA sequence data of the rbcL gene, the matk gene, and the internal transcribed spacers of nuclear ribosomal DNA involving 14 species representing the Cercidiphyllaceae. Eupteleaceae. Platanaceae, Tetracentraceae. and all the subfamilies of the Hamamelidaceae have been investigated in the present study.

本研究测定了包括连香树科、领春木科、悬铃木科、水青树科和金缕梅科内所有亚科代表共计14个种的rbcL基因，matK基因和18S-26S核核糖体内转录间隔区的序列，并结合原有资料对所有低等金缕梅类及其相近类群进行了分支分析。

The families Cercidiphyllaceae, Daphniphyllaceae, Hamamelidaceae and Saxifragaceae are closely located, while the relationships among them remain unsolved even if more repres...

尽管增加了金缕梅科的取样密度，它们之间进一步的关系仍未得到分辨，结合它们的形态特征，连香树科和交让木科应置于金缕梅目内。rbcL基因树上反映出传统的&低等&金缕梅类成员领春木科与毛茛类植物聚在一起；悬铃木科与昆栏树科和水青树科关系较近，而与金缕梅科关系较远；杜仲科与低等金缕类的核心科———金缕梅科的关系似乎较除连香树科之外的其它低等金缕类成员近。低等金缕类植物由一些古老、孤立的科组成，且是多系的。

The"lower"Hamamelidae traditionally consists of seven families, namely Eupteleaceae, Trochodendraceae, Tetracentraceae, Cercidiphyllaceae, Myrothamnaceae. Platanaceae and Hamamelidaceae.

传统的低等金缕梅类包含7个科，即领春木科、昆栏树科、水青树科、连香树科、折扇叶科、悬铃木科和金缕梅科。

Mainly Lauraceae, Fagaceae, Theaceae, magnolia Branch, Division of Hamamelidaceae evergreen broad-leaved trees such as the composition of the shrub layer are found to evergreen species, community structure is more complex.

主要由樟科、壳斗科、山茶科、木兰科、金缕梅科等科的常绿阔叶树组成，灌木层中亦多常绿种类，群落结构比较复杂。

The results showed:(1)The flora of community is rich and complex,and it belongs to the transitional zone for many genera,the subtropical-temperate zone geographical composition of genera are dominant,about 51.47% of the total genera,and there are characteristics which form subtropical to temperate zone transition.(2)The species are mostly composed of Fagaceae,Lauraceae,Anacardiacea...

结果表明(1)该群落区系组成比较丰富和复杂，属于许多属的过渡地带，具有从亚热带向温带过渡的特征；(2)种类组成以壳斗科、樟科、漆树科、卫矛科、榆科、五加科、金缕梅科等为主，但优势种、建群种以温带属为主；(3)种群生活型谱以高位芽占绝对优势，群落垂直结构明显。

In order to further study the systematics and evolution of the family Hamamelidaceae, the five modern different classification systems of this family published by Harms (1930), Chang Hung-ta (1973,1979), Bogle et al.(1980), Endress (1989) and Li Jianhua (Li, 1997) are compared and discussed by the author based on the principle and method of study plant systematics.

为了进一步研究金缕梅科的系统与进化，作者详细介绍了该科的分类历史及各个分类系统；根据现代植物系统学研究的原理和方法，着重对金缕梅科的5个现代主要分类系统，Harms (1930)，张宏达(1973，1979)， Bogle et al。

Further study was carried on the cpDNA matK in Hamamelidaceae and its systematic significance (the sequences of matK of some species have been obtained, and the research have been funded by NSFC), and molecular and systematic study were also carried on Magnoliaceae, Rhizophoraceae, Labiatae.

在此基础上，开始了对金缕梅科叶绿体DNA mtK基因及其系统学意义的研究（已测定部分种类的matK基因序列，并获国家自然科学基金国际合作项目的连续资助），同时对木兰科，红树科，唇形科植物类群开展了分子系统发育研究。

The rbcL gene sequences of six species representing five subfamilies of the Hamamelidaceae and the Platanaceae were determined and used in the phylogenetic analysis on the "lower" Hamamelidae sensu Endress (1989) and its allies newly suggested.

测定了悬铃木科和金缕梅科5个亚科的6个代表种的rbcL基因序列，对低等金缕梅类植物及新近提出的相关类群进行了分子系统发育分析，获得4个最简约树。简约树步长为893，其CI值和RI值分别为0.558和0.591。

The newly collected DNA sequence data were analyzed with data collected in the previous studies involving species representing all the above families but the African Myrothamnaceae to address the phylogenetic questions of the"lower"Hamamelidae and the core family Hamamelidaceae.

主要结论包括：传统低等金缕梅类是一个复系类群；金缕梅科也是一个复系类群；ITS序列分析支持将连香树科包含在金缕梅科内，但是，rbcL资料和matK资料不支持将连香树科包含在金缕梅科内。

Comparative genomics in Salicaceae, Pinaceae, Rosaceae, Fagaceae and Hamamelidaceae had shown that the organization of genomes remained highly conserved over long evolutionary periods and extensive synteny or collinarity or microcollinarity existed in tree genomes.

有关林木比较基因组学研究主要集中在杨柳科、松科、蔷薇科、壳斗科和金缕梅科的一些树种中。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失