natural population 中文意思是什麼

natural population 解釋
天然群體
  • natural : adj 1 自然界的；關于自然界的。2 天然的；未開墾的；野生的。3 固有的 生來的 天賦的（opp acquired）...
  • population : n. 1. 人口；人口總數；全體居民；人口的聚居。2. 物的全體[總數]；【生物學】蟲口；種群（量）；群體；族，組，個數；【統計學】對象總體，全域。3. 【物理學】布居；密度。4. 〈罕用語〉殖民。
  1. Rapd ( random amplified polymorphic dna ) technique was used to study the genetic structure and genetic differentiation of the natural population and the hatchery stock of chlamys farreri. amplifications with 20 10 - base primers under predetermined optimal reaction yielded 153 reproducible amplified fragments ranging from 200 to 3000bp. the mean proportions of polymorphic amplified fragments of natural population and the hatchery stock were 73. 2 % and 70. 6 % respectively, and the mean hetreozygosities of them were 0. 27 and 0. 26 respectively

    在對20個野生櫛孔扇貝和20個養殖櫛孔扇貝的基因組dna的檢測中， 20個隨機引物共擴增出153條清晰可分辨的dna片段，片段大小在200 3000bp之間，其中野生種群和養殖群體多態性片段分別為112和108條，多態位點比例分別為73 . 2 %和70 . 6 % ，雜合度分別為0 . 27和0 . 26 。
  2. In this paper, the resistance of sweet corn varieties to asian corn borer ( acb ) ( ostrinia nubilalis ) were evaluated by means of host experimental population life table and natural population life table ; the order of their resistibility is as follows : s2 > y3 > h1 > y1 > c20

    摘要利用亞洲玉米螟實驗種群生命表和自然種群生命表方法評價甜玉米品種對亞洲玉米螟的抗蟲性，結果得出亞洲玉米螟對不同甜玉米品種的抗性大小依次為：穗甜2號>奧甜2號>華1 >奧甜1號>超甜20 。
  3. Study on the natural population life tables of pantana phyllostachysae chao

    剛竹毒蛾自然種群生命表的研究
  4. Bionomics of perissopneumon xyliae and life tables of its natural population

    雲龜履碩蚧的生物學及其自然種群生命表
  5. Prediction of the natural population dynamics of spodoptera litura fabricius

    斜紋夜蛾自然種群數量動態預測研究
  6. Three natural population of l. sagitta, add up to 62 individual, with 17 random primers, 128 polymorphic loci

    箭葉橐吾的三個自然居群，總計62個個體，使用17個隨機引物，共擴增出128個多態位點。
  7. Evaluation on the controlling effects of eight insecticides on the natural population of citrus leaf - miner

    幾種殺蟲劑對柑橘潛葉蛾自然種群控製作用的評價
  8. Furthermore, the study indicated that the genetic diversity of the natural population of reawnuria soongorica increased with the decreasing of the content of organic matter, water, total n and total p in soil, which had some relation with more potentiality of the genetic and variation of reawnuria soongorica in its long - term evolution to adapt worse environment

    經分析表明，無葉假木賊種群與角果藜種群的shannon多樣性指數分別為0 . 1403和0 . 1615 ，基因分化系數（ g _ （ st ） ）為0 . 1469和0 . 1659 ，揭示了兩物種種群遺傳變異多存在於亞種群內，亞種群間的遺傳分化則不明顯。
  9. Five natural population of l. virgaurea, add up to 100 individual, with 17 random primers, 132 polymorphic loci

    黃帚橐吾的五個自然居群，總計100個個體，使用17個隨機引物，共擴增出132個多態位點。
  10. Studies on key influencing factors on the dynamics of natural population of rhopalosiphum padi linnaeus

    影響禾穀縊管蚜自然種群變動的關鍵因素研究
  11. Measles antibody level in natural population in fujian, china

    福建省自然人群麻疹免疫抗體水平狀況
  12. This study deals with butterfly diversity and assessing endangered species in natural reserve of baishuijiang in gansu province. the research includes field investigation, observation at certain time and places, captive breeding in experimental area, capture - recapture etc. the biology of four important butterfly species is studied, especially focusing on the natural population life table, habitats, population structure and mobility of byasa impediens. the population developing trend and key factor that result population decline and fluctuation of troides aeacus and byasa impediens are analysed

    本文在甘肅白水江自然保護區碧峰溝通過野外調查、定點定時觀察、實驗地飼養、標記重捕等方法研究了碧峰溝的蝶類多樣性並進行了局部瀕危評估；研究了四種重要蝶類的生物學特性；對長尾麝鳳蝶的生境、自然種群生命表、種群結構、種群移動性進行了深入研究，並估測了各種種群參數，分析了種群發展趨勢。
  13. The aflp fingerprinting of 20 seedlings of m. xiaojinesis with 8 ecor i - mse i primer combinations showed that m. xiaojinesis in natural population had a high degree of genetic identity, its genetic similar coefficient being 98. 92 %

    用8對ecor - mse引物組合對小金海棠家植實生群體內的20個株系進行了aflp分析。
  14. It can be concluded from the experiment results that hatchery seed has lower genetic variation and large - scale hatchery seed releasing affects the genetic diversity of the natural population. the shrimp distributed along china coast in bohai sea and yellow sea may consist of more than one populations. the viral disease resistant ability of f. chinensis is proved to be genetically inherited and can be improved by genetic selection

    一通過對實驗結果的進一步分析認為：中國對蝦人工育苗的過程使後代群體的遺傳多樣性下降，人工培育苗種的大規模放流影響了自然群體的遺傳多樣性； ，分佈於我國沿海的中國對蝦可能由多個自然群體構成，還存在未被發現的種質資源：中國對蝦抗wssv病毒感染是由遺傳決定的，選育可提高中國對蝦對wssv的抗性。
  15. Pollination characteristics of natural population of sabina vulgaris in mu us sandland

    毛烏素沙地天然臭柏種群風媒傳粉的特徵
  16. The hetreozygosity and proportion of polymorphic loci of hatchery stock were lower than that of the natural population, which could be related to the small size of the cultured stock and the higher possibility of inbreeding

    養殖群體的多態位點比例和雜合度都低於野生種群，這與人工累代養殖過程中，群體較小，近交機會增加有關。
  17. The higher values of heterozygosity and proportions of polymorphic loci of the natural population indicated that the natural resource of c. farreri in china was in good condition with higher genetic diversity. it is urgent to establish the effective measures to protect the resource

    櫛孔扇貝野生種群的多態位點比例和雜合度處于較高水平，說明我國櫛孔扇貝野生種群的遺傳多樣性水平較高，種質資源尚處于較好狀態，應制定相應的漁業生產和管理措施加以保護。
  18. Additionally, through the use of clustering analysis, principal factor analysis and the correlation analysis, we found that the genetic structure of natural population reawnuria soongorica was related to the ecological factors ( soil factors mainly ) of the oasis - desert transitional zone

    而其它土壤生態因子則與紅砂的遺傳多樣性指數的相關性均不顯著（ p 0 . 05 ） 。表明紅砂個體的分佈可能與過渡帶土壤的某些易溶性鹽分相關。
  19. Genetic diversity of protein in alcohol for pinus massoniana from natural population

    天然馬尾松群體遺傳結構的研究
  20. Role of mass screening in natural population in early diagnosis of carcinoma of large intestine

    自然人群普查在大腸癌早期診斷中的作用
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