phylogenetic study 中文意思是什麼

phylogenetic study 解釋
系統發生研究
  • phylogenetic : 系統發生的
  • study : n 1 用功，勤學；〈常 pl 〉學習；研究 （of）; 研究對象；研究項目；值得研究的問題；學問，學業，學科...
  1. This research reviewed the relationships of the myriapods to other arthropoda, based on morphological and molecular sequence data and the studies of developmental biology. the review was followed the major controversies in the higher - level phylogeny of myriapods. the complete 18s rrna sequences of four groups of myriapoda plus hexapoda ( protura, diplura, insecta ) and crustacea were used for phylogenetic study

    本研究首先從形態學性狀、分子性狀（ dna和蛋白質）以及結合形態和分子性狀、發育生物學的研究等方面對多足類動物與其他節肢動物之間的親緣關系進行了綜述，同時對多足類的系統發生研究進行了綜述。
  2. 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境。在過去的20年中，從中奧陶世歷經整個志留紀至早泥盆世的巖層中，化石植物微化石和大化石的新發現改變了人們對陸生植物起源的認識，並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間框架。據此人們識別出地史中的3個陸生植物的時代：始胚植物時代始維管植物時代和真維管植物時代。
  3. The first part of this study is polyphasic taxonomy analysis of the thirteen strains which have herbicidal activities. the polyphasic taxonomy methods include morphology, cytochemistry, dna g + c mol %, phylogenetic analysis of 16s rdna sequences and physiological and biochemical experiments

    本實驗的第一部分對具有除草活性的13株放線菌（ 40001 40013 ）進行了系統的多相分類研究，採用了形態學、細胞化學組分、 dnag + cmol 、 16srdna序列分析及生理生化實驗等技術方法。
  4. A four - gene block, a rwo - trna gene cluster and six single trna genes involved in the rearrangement, the second gene rearrangement type of mitochondrial dna reported for any pancrustacea arthropod. comparisons of mitochondrial gene arrangements of decapod suggested that rearrangement of the four gene - block found in eriocheir is informative for high level phylogenetic study of decapod

    發生重排的基因包括一個4基因塊的重排、 1個2基因的trna基因簇的重排和6個單一trna基因的重排，形成泛甲殼類線粒體dna的另一種基因重排類型。
  5. The material of this study is a new species - cardamine hupingshanesis, found by lin - hang liu and ke - ming liu professors of hunan normal university. its karyotype was analyzed and molecular evolutions of five species, c. hupingshanesis ( hup, about 1300m sea level ), c. griffithii ( gri, about 1500m sea level ), c. impatiens ( imp about 600m sea level ), c. hirsute ( hir, about 200m sea level ) and c. scutata ( scu, about 200m sea level ) were studied. on the basis of moiphological studies, phylogenetic trees were constructed by its sequences and then the phylogenetic relations of hup and four other species were discussed

    本文以湖南師范大學劉林翰、劉克明老師發現的十字花科碎米薺屬（ cardamine ）一新種? ?壺瓶碎米薺（ cardaminehupingshanesisl . h . liu ， hup ，海拔1300m左右）為實驗材料，對其核型作初步分析；並結合該新種同屬同組（碎米薺組， sect . cardamine ）但生長在海拔不同的四個種? ?大葉山芥碎米薺（ cardarminegriffithii ， gri ，海拔為1500m左右） 、彈裂碎米薺（ cardamineimpatiens ， imp ，海拔為600m左右） 、碎米薺（ cardaminehirsute ， hir ，海拔為200m左右）和圓齒碎米薺（ cardaminescutata ， scu ，海拔為200m左右）進行了分子系統學研究。
  6. Gene sequences used in phylogenetic study on chaldidoidea hymenoptera

    基因序列在小蜂總科分子系統發育研究中的應用
  7. Study on phylogenetic relationships of four scylla species and taxonomic status of mud crab in china based on mitochondrial 12s rrna sequences

    序列探討4種青蟹系統發育關系及中國沿海青蟹的分類地位
  8. Phylogenetic utilites of mitochondrial dna sequences in the study of insect systematics

    序列特點與昆蟲系統學研究
  9. In this work, some species of palmae cultivated in the xiamen botanical garden had been selected to be analyzed their genetic diversity with rapd ( random amplified polymorphic dna ) technique. according to the result of genomic dna amplified with pcr ( polymerase chain reaction ), genetic distance and similarity between different palm species were calculated on nei " s estimate of similarity and genetic distance. a primary but first time research at the phylogenetic relationships of some genera and species, the molecular classification and identification of some puzzling species of palmae was carried out through upgma ( unweighted pair group mean average ) cluster analysis of the genetic distance together with comparative study of the morphological structure characteristics

    本文在初步調查分析了棕櫚科植物在我國的自然分佈、引種馴化情況以及該類植物在廈門地區栽培應用狀況的基礎上，首次採用rapd分子標記技術，對廈門萬石植物園引種的一些棕櫚科植物的遺傳多樣性進行了研究，根據pcr對基因組dna擴增的結果，用nei ' s相似性系數計算了不同植物間的遺傳距離和遺傳一致度，通過對遺傳距離的upgma聚類分析，並結合形態分類的特點，對棕櫚科植物的屬、種間的系統分類關系和一些疑難種的分類鑒定進行了初步研究。
  10. Sequence divergences within these grasshoppers indicate that cyt b is a useful marker at the generic and species level for phylogenetic study, but there is problem at the subfamily level

    囚此， cytb基因在對斑翅蝗科科下種屬階元的分類與進化關系研究中，是一個有效的分于標記。
  11. They are harmful to agricultural plant. in the taxonomic study of aphidiodea insects, there are some questions about them. in order to clarify the arguments for the phylogenetic relationships of aphidinea insects, we determined a partial ( hoobp ) sequence of the 18s ribosomal dna for 13 aphid species ( 4 subfamilies, 6 families ) at the first time

    例如，刺蚜亞科cervaphidinae屬于毛管蚜科greenideidae還屬于群蚜科thelaxidae ；粉毛蚜亞科pterocommatinae目前暫放在蚜科aphididae內，但無論從形態學還是生物學、寄主植物等方面該亞科與毛蚜科chaitophoridae有許多相似之處
  12. The objective of the present paper was to investigate the genome constitution of three species of hystrix and their taxonomic status from cytological and molecular data. by rapd and issr assay, the present study was to evaluate phylogenetic relationships among hystrix, leymus and psathyrostachys, and to compare the use of two molecular markers in the genus and species of triticeae

    本研究（ 1 ）通過形態學特徵比較、細胞學和繁育學資料，探討三個hystrix物種的染色體組組成及親緣關系； （ 2 ）通過rapd分析和issr分析，探討hystrix與leymus 、新麥草屬psathyrostachys的屬間親緣關系； （ 3 ）比較rapd和issr兩種dna分子標記在hystrix及近緣屬系統分類研究中的應用。
  13. Because of the method is convenient and fast, and no molecular information about the species to be studied is needed, rapd is widely used in many areas such as study of phylogenetic tree and genetic diversity. we studied 32 crested ibises from yong county and 5 crested ibises from beijing zoo by rapd

    我們採用rapd技術對來自洋縣的32隻朱?和來自北京動物園的5隻朱?進行了研究，根據實驗數據計算了任意兩個個體之間的相似性系數和遺傳距離，分別用upgma法和簡約法構建出其譜系關系，並對種群的遺傳多樣性作了初步的探討。
  14. Sequence analysis of 16s rdna and its from isolates of acinetobacter spp. ( strain eva10, eva11, eva12, eva13, eva14 ) revealed some discrepancy with result of phenotypic characteristics so that the determination of isolates at species level and phylogenetic relationship of acinetobacter spp. still would depend on further study

    Acinetobactsr屬分離菌株eva10 ， evall ， eva12 ， eva13 ， eva14的表型特性， 165rdna和廠s的分析結果存在一些矛盾，確定種水平分類的地位和該屬各個種之間的系統發育關系仍需進一步研究。
  15. If we study on the phylogenetic relationship in intra - genus or intra - species using gapdh as a target gene, it may be make a discrepancy

    對于距現今較近的動物，用其作為近親緣關系的屬內種間的標記基因，可能產生偏差。
  16. This will benefit the biological evolution, phylogenetic analysis and metabolism study of myxobacteria

    該研究為粘細菌在生物進化、系統發育及代謝產物等方面的研究奠定了堅實的基礎。
  17. ( 3 ) as teratoscincus dose not cluster with any other taxa with bootstrap supports in both data sets, so the phylogenetic status of teratoscincinae has not been resolved in the present study. 3

    Teratoscfncus未在自引導支持下與任何分類單元相聚，所以沙虎亞科（ teratoscincjnae ）的系統發生地位在本研究中未得出結論。
  18. Application of dna sequences in plant phylogenetic study

    序列在植物系統學研究中的應用
  19. The fundamental principle, research method and analytical flow of molecular phlogenetics, and phylogenetic analysis are briefly reviewed. also the characteristic and application of multivariate morphometrics, as well as the phylogenetic investigation progress of sisorid fishes, are briefly reviewed too. the above help interpret the significance and methods of the present study

    簡要回顧了分子系統學的基本原理、研究方法、分析流程和系統發育分析方法等，以及多變量形態度量學特點與應用、 ?科魚類系統發育研究進展，從而有助於理解本研究的方法、目的與意義。
  20. The study of genetic relationship showed that the selected samples and the sequenced mtdna region satisfied the request of the genetic analysis. the novel variable site provided some index to establish a perfect phylogenetic tree

    5個民族之間的遺傳關系分析表明，所選擇的群體樣本及測序區能夠滿足群體遺傳學分析的要求，而且新發現的變異位點可以為建立更完善的系統樹提供指標。
分享友人
分享到 Line

分享到臉書