遺傳變異 的英文怎麼說

中文拼音 [yízhuànbiànyì]
遺傳變異 英文
genetic variance
  • 遺 : 遺動詞[書面語] （贈與） offer as a gift; make a present of sth : 遺之千金 present sb with a gener...
  • 傳 : 傳名詞1 （解釋經文的著作） commentaries on classics 2 （傳記） biography 3 （敘述歷史故事的作品）...
  • 異 : 形容詞1 （有分別; 不相同） different 2 （奇異; 特別） strange; unusual; extraordinary 3 （另外的;...
  • 遺傳 : [生物學] heredity; hereditary; inheritance; inherit
  1. In the present study, aflp ( amplified fragment length polymorphism ) markers was used to examine population of abies yuanbaoshanensis in order to understand the level of population genetic variation and genetic structure. the result would help to evaluate its evolutionary potentiality and the degree of being endangered and could provide scientific basis for making right protection strategy. high - quality dna was extracted using ctab method from those tender leaves of forty - three fully - developed trees in population abies yuanbaoshanensis

    本研究選用一種高效的檢測遺傳變異的分子標記? ? aflp技術來分析元寶山冷杉種群的遺傳多樣性，旨在了解該種群在分佈區內的遺傳變異水平和遺傳結構情況；研究結果將有助於更清楚地認識這一瀕危類群的生存潛力和瀕危程度，而且可以為制定何種挽救和保護措施提供科學的依據。
  2. Zou s, li s, cai w, zhao j, yang h. establishment of fertile tetraploid population of blunt snout bream ( megalobrama amblycephala ). 2003 ’ forum on fishery science and technology, guangzhou, china

    鄒曙明.牙鮃和大菱鮃養殖群體的分子標記和遺傳變異.中國水產學會年會（武漢） （ 2000年3月1日- 4日）
  3. This paper summarized the inheritance and variation of main biological and economic characters in rape progeny from hybridization and distant crossing, inquired into the selective mating of hybrid parent and the selection of hybrid progeny, analyzed the problems which had existed in rape distant crossing breeding, and put forward some ideas for accelerating the stability of characters in distant crossing progeny

    概述了油菜品種間雜交後代及遠緣雜交後代主要生物學性狀和經濟性狀的遺傳變異現象；對雜交親本的選配及雜種後代的選擇進行了探討，分析了油菜遠緣雜交育種中存在的問題，就加速遠緣雜種後代的穩定提出了一些見解。
  4. The discontinuous component of the genetic variation pattern of a species also contains the differences among subpopulations resulting from accidents of sampling genetic drift and others.

    物種遺傳變異型不連續的成分也包含抽樣遺傳播遷和其他事故引起的亞種群之間的差別。
  5. Cluster analysis by upgma methods indicated that these five stocks might be divided into three clusters. results of rapd a nalysis suggested that extensive genetic diversity was detected in this species and the genetic divergence among stocks was relatively high ; upgma phylogenetic tree showed there existed three geographic populations of p. polyactis in the yellow sea and the east china sea, which supported the previous conclusion by morphological and ecological methods. part two : the genetic diversity between trichiurus lepturus and eupleurogrammus muticus random amplified polymorphic dna ( rapd ) technique was applied to 12 individuals from each species of the hairtail fishes trichiurus lepturus and eupleurogrammus muticus collected from the yellow sea

    50一2 . 44 ） ，群體內和群體間的遺傳變異比例分別為69 %和31 % ;群體間的平均遺傳相似度和遺傳距離分別為0 . 9139和o . q861 ;用非加權配對算數平均法（ unweightedpair - groupmethodofari山m七tiome即s ， upgma ）聚類分析的結果表明，所分析的5個群體可被分為3個地理群系，從分子水平上支持了過去有關學者把黃海和東海的小黃魚劃分為北中南3個地理群系的觀點。
  6. He argued that organisms evolve gradually by accumulating small hereditary changes.

    他論證說，生物是由於一些小的遺傳變異的積累而逐漸演變的。
  7. As analyzed, ( 1 ) the rapd technique is highly sensitive to investigating genetic diversity in t. lepturus and e. muticus. t. lepturus exhibits lower polymorphism and genetic diversity than e. muticus ; ( 2 ) according to the analysis of the partial mitochondrial 16s rrna gene sequences, a very low intraspecific variation and considerably high divergence among species were found, which reveals a dual nature of conservatism and variability in mitochondrial 16s rrna gene ; ( 3 ) five primers generate the species - speeific rapd sites and these sites can be served as the molecular markers for species identification and ( 4 ) it can be proved at dna variation level that t. lepturus and e. muticus are of two species respectively pertainiag to different genera, which supported the nelson taxonomic conclusion

    分析結果表明: （ 1 ） rapd技術研究黃海帶魚和小帶魚的遺傳多樣性具有較高的靈敏度和檢出率，帶魚的多態比例和遺傳多態度均較小帶魚的低; （ 2 ）線粒體165出兇a基因序列在分析兩物種遺傳變異時表現出保守和變異的雙重特性，種內變異極小而種間較大: （ 3 ） 5個隨機引物擴增出種特異的ra衛d帶，可作為種間分子鑒定標記; （ 4 ）研究證實帶魚和小帶魚是不同屬的兩個種，從而在分子水平上支持了nelson分類系統的觀點。
  8. The role of introgression in shaping the genetic variation pattern of the species should be seen in the same light.

    在形成種的遺傳變異型中，種質滲入所引起的作用也應當用同樣的見地來看待。
  9. The species that make up natural ecosystems usually display a wide range of genetic variability.

    構成自然生態系統的生物種，通常表現有較大范圍的遺傳變異性。
  10. The long - term domestication of liquor - making microbes under the unique liquor - making environment of maotai liquor ( high temperature starter - making, high temperature stacking fermentation, and high temperature anaerobic fermentation etc. ) and the succession of microbial groups through heredity, mutation, growth and derivation etc. had accumulated abundant high temperature resistant, high acid resistant and high alcoholicity resistant extreme microbes

    摘要茅臺酒獨特的極端高溫制曲、高溫堆積發酵、高溫厭氧發酵等釀酒環境長期對釀酒微生物進行馴化，各種微生物經過遺傳、變異、消長和衍化等微生物群落的演替，促成了釀酒微生態環境中豐富的耐高溫、耐高酸和耐高酒度等極端微生物的富集。
  11. Among avian orders, the anseriformes ( screamers and waterfowls ) are a morphologically and biologically diverse group containing ca. 150 species distributed worldwide except antarctica. this paper will review the phylogeny of anseriformes firstly and then discuss the molecular phylogeny of anseriformes based on the genetic variation of mitochondrial 12s rrna gene and cytochrome b gene respectively

    本文首先對雁形目鳥類的系統發生研究進行了綜述，然後分別基於雁形目鳥類線粒體dna12srrna基因和細胞色素b基因全序列的遺傳變異分析，探討了雁形目鳥類分子系統發生。
  12. This promotes genetic varation in the population especially in plants that are dioecious and moneclous

    可以在種群中產生遺傳變異，特別是在一些雌雄異體或雌雄同體的植物中。
  13. Three operators ( crossover, replication, mutation ) are used in two - dimensional packing. many parent generations make many filial generations, and then the individual will be abandoned according to the value of the objective function

    文中把生物學中的遺傳、變異、交叉用於二維布局中，從多個父代個體中生成多個子代個體，根據目標函數值的優劣進行淘汰。
  14. Sinense y. x. lin using allzyome marker. the experiment employ six enzymes : est, mdh, fdh, gdh, sod and acp, using their polymtic locus to analyse the allele gene frequency, the number of the effective allele gene

    採用est 、 mdh 、 fdh 、 sod和acp等5種酶系統，分析荷葉鐵線蕨的等位酶遺傳變異，用間接法估算荷葉鐵線蕨交配系統的特徵參數? ?異交率t 。
  15. Twenty f1 combinations crossed among 5 varieties and strains different in fiber properties according to complete diallel crossing design were used to evaluate the heterosis and gene action of boll weight and lint percentage in high quality fiber property varieties in upland cotton in 1998 1999 for two year successively at nanjing. it was indicated that there existed small interactions with the environmental factors without maternal effects and the additive gene effect was in chief, attaining to 51. 2 % and 65. 4 % respectively for boll weight and lint percentage. the dominant effect was also in higher rate, 32. 6 % and 16. 8 % respectively. the population mean heterosis of boll weight and lint percentage over the mid - parental mean were relatively prominent 13. 3 % and 3. 5 % respectively in extreme significance. however, boll weight showed no significantly surpassing parental f1 heterosis over the better parent based on population mean ( 2. 0 % ) ; while the lint percentage expressed significant negative heterosis value ( - 2. 1 % ). the gene actions were in conformity with the heterosis expression. it was shown clearly that the f1 combinations crossed between parents with similar performances had relatively high dominant effects and significant positive f1 surpassing parental heterosis ( f1 heterosis over the better parent ) ; while no f1 combination crossed between the parents with prominent mutual difference surpassed the higher parent in yield components, which indicated that among those parents with less difference and close relationships, there still existed sufficient genetic variation or certain mechanism for creating variation and achieving greater advances in breeding. correlation analyses also indicated that there still existed severely undesirable negative correlation between yield and fiber properties as well as the difficulties for their simultaneous improvements

    利用5個具有不同纖維品質性狀的品種（系）配製完全雙列雜交組合20個，通過親本和f1的2年隨機區組試驗發現產量性狀的鈴重和衣分與環境的互作效應小，不存在母體效應，並以加性遺傳效應為主，分別占表型方差的51 . 2 %和65 . 4 % ;顯性遺傳效應所佔的比率也較高，分別為32 . 6 %和16 . 8 % .鈴重和衣分的群體平均優勢較大，分別為13 . 3 %和3 . 5 % ，達到了極顯著;鈴重的超親優勢為2 . 0 % ，不顯著;衣分為顯著的負值（ - 2 . 1 % ） .遺傳分析與雜種優勢結果一致.具體表現在產量性狀上，親本相當配製的組合雜合顯性較高，其超親優勢正向顯著，而極值親本（差異較大）所配組合沒有超過高親的.這表明親本差異小、親源關系較近的親本中仍然存在足夠的遺傳變異或某種機制以創造變異使育種取得更大的進展.相關分析表明了仍然存在嚴重的品質與產量的負相關，遺傳改良的難度較大
  16. The isozyme took one kind of important genetic marker is widely applied to biology research each domain, the plant isozyme can in the very great degree be able to reflect between the plant individual the heredity difference, is surveys the gene difference and the hereditary change one important method

    同工酶作為一種重要的遺傳標記被廣泛應用於生物學研究的各個領域，植物同工酶能夠在很大程度上能反映植物個體之間的遺傳差異，是探測基因差異和遺傳變異的一種重要手段。
  17. This study was conducted to examine the interrelationship of 10 seed vigor traits in 12 wheat genotypes through variance, co - variance and path coefficient analysis, to determine broad - sense heritability, and to estimate genetic advance under selection. the genotypes showed significant difference for all traits, except for percentage of normal seedling. genetic correlation between conversion efficiency of seed reserve, electrical conductivity with other traits were not significant, showed that selection for any of them might be possible without hampering any other traits. however path coefficient analysis indicated that conversion efficiency of seed reserve, seed reserve utilization ratio have strong direct effect in affecting seedling weight, and that mean germination time has significantly negatively correlated in affecting gi. moderate to high estimates of broad - sense heritability, genetic coefficient of variation and expected genetic advance were obtained for electrical conductivity, germination index, mean germination time, seed dry weigh, seedling dry weigh, seed reserve depletion ratio indicating the possibility for improving these traits

    本研究利用12個普通小麥品種對10個種子活力性狀的遺傳變異和相關研究，表明除正常幼苗百分率外，其餘種子活力性狀在品種間均存在顯著的差異.種子貯藏物質轉換效率、電導率兩個性狀間及與其它性狀均無顯著的遺傳相關，因此對他們的選擇不會影響到其它性狀.通徑分析表明幼苗干重主要取決于種子貯藏物質轉換效率、種子貯藏物質利用速率;發芽指數主要由平均發芽時間決定.電導率、發芽勢、幼苗干重、種子干重、發芽指數、種子貯藏物質消耗比率6個性狀表現中到高的遺傳力、遺傳變異系數和相對遺傳進展，指明通過遺傳育種手段改良這些性狀是可能的
  18. E. mollis had higher genetic diversity among populations, and the reason may be as follows : ( 1 ) those populations are generally large and are not subject to significant loss of variation through small - population effects such as random genetic drift and inbreeding coupled with selection

    相對於26種長壽木本特有種和61種狹窄的地理分佈種來說，翅果油樹種群也具有高的遺傳變異水平。這表明翅果油樹種群不存在遺傳上的退化現象。
  19. T - virus is manifesting itself in a genetic mutation

    T病毒顯示自我遺傳變異
  20. Genetic variation of chemical constituent in ginkgo biloba leaves

    銀杏葉中化學成分的遺傳變異
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