diversity distance 中文意思是什麼
diversity distance
解釋
分集距離-
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。 -
It has been improved, and specially proposed : firstly, we has increased run speed and ensure the diversity of population is with constructing non - dominated set by throwing off the dominated solutions, expressing the interior relation of individuals each other by the crowding distance, and constructing new population. secondly, we have further improved its convergence performance by clustering in precondition of ensuring a better distribution of individuals
該文以nsga -為基準，對演算法進行了改進，具體提出了：用排除法構造非支配集、用聚集距離刻畫個體間的內部關系以及構造新群體，來提高運行速度和保持群體的多樣性；用聚類演算法在保持原有特性的前提下，進一步改善收斂性能等。 -
The genetic distance between populations showed that the genetic diversity is according to the geographic distance. 3
群體間的遺傳距離顯示：遺傳距離的大小與地理距離的大小存在一定的聯系。 -
Then the genetic distance and shannon information index among these 13 strains were obtained by using the software popgen2 on the basis of pcr - rflp patterns. the phylogenetic tree was constructed by using the upgma algorithm method ( mega2 software package ). the shannon information index indicated that there was a higher genetic diversity among the frankia strains and some strains had a big genetic distance with others
根據酶切圖譜，通過popgen2軟體計算各供試菌株之間的遺傳距離；用shannon信息指數計算種群遺傳多樣性；利用upgma法（ mega2軟體）對所獲得的遺傳距離矩陣進行聚類分析，得到13株供試frankia菌株間系統發育的聚類分析樹狀圖譜。 -
At the aspect of examining genetic similarity and distance, there was difference between the results obtained by two techniques. the genetic diversity revealed by issr was higher than that obtained by rapd
在遺傳相似性和遺傳距離上，兩種方法的分析結果也是有差異的ssr分析的群體間的遺傳距離均比rapd的分析結果高；遺傳分化系數的差異也很大， issr在0 -
The level of genetic diversity of the family ( yuyao x wenshi ) was highest, and its shannon wevieis index was 7. 9658. the genetic distance was caculated according to the 38 polymorphic loci and the cluster map was constructed
家系（餘姚文石）遺傳多樣性水平最高，其shannon多樣性指數為7 . 9658 。根據這38個多態位點計算遺傳距離，進行聚類分析。
分享友人