Studies on cladistic analysis of osmanthus 木犀屬的分支系統(tǒng)學(xué)分析
Based on these its data , a cladistic analysis is carried out ( paup software ) Lin )一個(gè)居群的its序列進(jìn)行了簡(jiǎn)約法的研究。
A cladistic analysis of monocotyledons at the family level based on morphological data 單子葉植物科級(jí)分類階元形態(tài)性狀分支分析
In part three , the phylogeny of raphidioptera is analyzed . the cladistic method was first used to study familial phylogeny of fossil and living snake - flies 第三部分:首次利用支序分類學(xué)方法,對(duì)現(xiàn)生和化石蛇蛉目的科級(jí)分類單元系統(tǒng)演化關(guān)系進(jìn)行了研究。
The phylogentic relationships of the flabellifera families are assessed using cladistic methodology . all the specimens are deposited in the institute of oceanology , chinese academy of sciences in qingdao 本文記述了我國(guó)扇肢亞目7科37屬81種,其中包括13個(gè)新種, 29種為我國(guó)海域新記錄種。
According to the cladistic analysis , which has been introduced since the middle period of 20 century , eublepharidae was the most primiteve clade and gekkonidae was differentiated latest 20世紀(jì)中葉以后,在研究中引入了支序分析方法,提出幾種系統(tǒng)發(fā)生假說,觀點(diǎn)雖不盡一致,但一般認(rèn)為瞼虎科最為原始,壁虎科分化較晚。
Part 3 tentatively studies the cladistic of 22 genera occurring in china and all the works are finished by using hennig 86 software which is provided by dr . wei of central south foresty university . the followings are the descriptions of 6 new species . 1 區(qū)系分析部分就中國(guó)大葉蟬亞科種在世界6大動(dòng)物地理區(qū)分布以及在中國(guó)7個(gè)動(dòng)物地理區(qū)的分布進(jìn)行了統(tǒng)計(jì)和歸納,就有關(guān)方面的問題進(jìn)行了討論。
Three types of cuticular thickening at the polar region of the guard cells are observed : slight cuticular thickening ; rod - shaped culicular thickening and rarely t - shaped thickening . with data obtained from the former research and personal observation , the cladistic methods were employed for the phylogenetic analysis of data and trees were rooted by out - group comparison using , the related genus kadsura . as result , a new system of the genus schisamdra michaux was reconstructed , and schisandra michaux was subdivided into 2 subgenus , 3 section , 2 series 10 species in this dissertation 整理有關(guān)五味子屬植物研究的資料,補(bǔ)充搜集近期發(fā)表的資料和本人研究所得數(shù)據(jù),以種為基本單元,選擇近緣的南五味子屬( kadsura )作為外類群,采用paup4 . 0b4a軟件對(duì)本研究得出的性狀數(shù)據(jù)作分支分析,重建五味子屬的系統(tǒng)發(fā)育,修訂和補(bǔ)充五味子屬分類系統(tǒng),在五味子屬下設(shè)2亞屬、 3組、 2系、 10種。
The origin and evolution of land plants was an important event in the history of earth life and has affected all other lives on the earth and global environment . during the past two decade , the new discoveries of fossil plants microfossils and megafossils from the mid - ordovician through all silurian to the lower devonian improved knowledge of the origin of land plants , provided a time framework of the basal groups for the land plants and the early evolution diversity of vascular plants . three new plant based epochs have been recognized . on the other hand , molecular sequence studies have provided insights into the phylogeny and early branches of land plants . a phylogenetic tree has been established by the joint of a study of comparative morphology and gene sequences . this paper summarizes recent advances and new knowledges , comments on the phylogenetic studies based on the cladistic analysis 陸生植物的起源和演化是地球生命中的重大事件,它影響到地球上所有的其他生命和全球環(huán)境。在過去的20年中,從中奧陶世歷經(jīng)整個(gè)志留紀(jì)至早泥盆世的巖層中,化石植物微化石和大化石的新發(fā)現(xiàn)改變了人們對(duì)陸生植物起源的認(rèn)識(shí),并且為陸生植物和維管植物早期演化分異提供了基部類群分化的時(shí)間框架。據(jù)此人們識(shí)別出地史中的3個(gè)陸生植物的時(shí)代:始胚植物時(shí)代始維管植物時(shí)代和真維管植物時(shí)代。
Phylogenetic relationship of the sinibrama species was reconstructed using the cladistic method and morphological characters . c . monglicus monglicus , a . lini , p . pekinensis and m . terminalis were selected as out - group . and a total of 34 morphological characters were found variable among four valid species 用分支系統(tǒng)學(xué)方法,重建華鳊屬魚類的系統(tǒng)發(fā)育關(guān)系,運(yùn)用外類群比較法,選擇蒙古? 、大眼近紅? 、鳊和三角魴為外類群,對(duì)34個(gè)形態(tài)學(xué)性狀進(jìn)行了簡(jiǎn)約性分析。