高遺傳力 的英文怎麼說

中文拼音 [gāoyízhuànlì]
高遺傳力 英文
high heritability
  • 高 : Ⅰ形容詞1 （從下向上距離大; 離地面遠） tall; high 2 （在一般標準或平均程度之上; 等級在上的） above...
  • 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）...
  • 力 : Ⅰ名1 （力量; 能力） power; strength; ability; capacity 2 [物理學] （改變物體運動狀態的作用） forc...
  • 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. The properties of the hybrid, such as greater vigor and adaptability, are retained in the allopolyploid in subsequent generations and such organisms are often highly successful

    這種具有高度生活力和適應性的雜交在異源多倍體中被保留，而且可以成功的遺傳下去。
  3. The net result of those conflicting trends is to cause optimum family size to be greater for low than for high heritability.

    這些矛盾引起的實際結果是遺傳力低的比遺傳力高的要求比較大的最適家系。
  4. As for single axis, pewin, the software given by the programmable multi - axis controller ( pmac ), is used to find the best parameters of the pid controller and feedforward compensation controller. then, the nonlinear friction in the system is compensated by the friction compensation controller with genetic algorithm ( ga ). the compensation controller can improve the system performance effectively

    對于單軸系統首先利用美國deltatau公司的可編程多軸控制器pmac自帶的控制軟體pewin進行pid參數的整定以及前饋補償環節的參數整定，然後分析系統存在的非線性摩擦力，利用遺傳演算法尋優摩擦力補償環節的參數，達到補償摩擦力的效果，有效地提高了系統的控制性能。
  5. 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
  6. In this text, we first do some research on the genetic algorithm about clustering, discuss about the way of coding and the construction of fitness function, analyze the influence that different genetic manipulation do to the effect of cluster algorithm. then analyze and research on the way that select the initial value in the k - means algorithm, we propose a mix clustering algorithm to improve the k - means algorithm by using genetic algorithm. first we use k - learning genetic algorithm to identify the number of the clusters, then use the clustering result of the genetic clustering algorithm as the initial cluster center of k - means clustering. these two steps are finished based on small database which equably sampling from the whole database, now we have known the number of the clusters and initial cluster center, finally we use k - means algorithm to finish the clustering on the whole database. because genetic algorithm search for the best solution by simulating the process of evolution, the most distinct trait of the algorithm is connotative parallelism and the ability to take advantage of the global information, so the algorithm take on strong steadiness, avoid getting into the local

    本文首先對聚類分析的遺傳演算法進行了研究，討論了聚類問題的編碼方式和適應度函數的構造方案與計算方法，分析了不同遺傳操作對聚類演算法的性能和聚類效果的影響意義。然後對k - means演算法中初值的選取方法進行了分析和研究，提出了一種基於遺傳演算法的k - means聚類改進（混合聚類演算法） ，在基於均勻采樣的小樣本集上用k值學習遺傳演算法確定聚類數k ，用遺傳聚類演算法的聚類結果作為k - means聚類的初始聚類中心，最後在已知初始聚類數和初始聚類中心的情況下用k - means演算法對完整數據集進行聚類。由於遺傳演算法是一種通過模擬自然進化過程搜索最優解的方法，其顯著特點是隱含并行性和對全局信息的有效利用的能力，所以新的改進演算法具有較強的穩健性，可避免陷入局部最優，大大提高聚類效果。
  7. Article to college entrance examination chinese current situation of test, combination of thoery and practice, pass with western chinese graduation examination way, contrast of the method, middle school of developed country, the first part put forward college entrance examination chinese have an examination three principle that should follow, namely content and form of test should respect and meet hereditary quality and individual character difference of quality of student ; should work in concert with latest scientific research results ; should regard measuring students " innovation ability as the main purpose

    文章針對高考語文考試的現狀，理論聯系實際，通過與西方發達國家中學語文畢業考試方式、方法的對比，第一部分提出高考語文考試應遵循的三個原則，即考試的內容和形式應尊重和適應學生的遺傳素質和個性品質的差異；應與最新的科學研究成果相呼應，內容應新穎、獨特，能激發人的潛能；應以檢測學生的創新能力為主要目的。
  8. We do not imply that adequately measured quantitative characters will invariably yield high heritability estimates.

    我們並不是說數量性狀測定標準合適，就一定估算出高的遺傳力。
  9. The approach not only improves global searching ability of genetic algorithm, but also enhances searching speed

    這種改進方法不僅提高了遺傳演算法全局搜索能力，而且很好的提高了搜索速度。
  10. Other genetic disorders become apparent when the demands of an independent existence after birth reveal a disorder of function such as renal failure, increased susceptibility to infection, or mental deficiency

    當出生后小兒獨立生存的需求呈現功能紊亂（如腎功能衰竭對感染敏感性增高或智力缺陷）時，另一些遺傳病就變為明顯。
  11. Then, an improved genetic algorithm is proposed to solve this problem. this algorithm makes trees with the source and all destinations are the space of operation and filter operation. with hybrid selection operator, competition among brothers, greedy operation, filter operation

    然後給出了一種基於遺傳演算法的實時多播路由選擇方法，並用改進的遺傳演算法進行了求解，該演算法採用包含源節點和目的節點的樹作為交叉和變異的空間的方法，通過加入混合選擇、小范圍競爭擇優的交叉變異操作，提高了全局搜索能力和收斂速度。
  12. Genetic control is critical for maintaining variability and avoidance of inbreeding, ensuring the long - term viability of captive nonhuman primate colonies

    對非人靈長類動物種群實行遺傳學控制，對于維持種群的遺傳多樣性，提高動物長期的生存力和繁殖率，滿足醫學生物學實驗需要具有現實意義。
  13. Because ga possesses the traits of can global random search, the robustness is strong, been use briefly and broadly, it didn ’ t use path search, and use probability search, didn ’ t care inherence rule of problem itself, can search the global optimum points effectively and rapidly in great vector space of complicated, many peak values, cannot differentiable. so it can offset the shortages of nn study algorithm, can reduce the possibility that the minimum value get into local greatly, the speed of convergence can improve, interpolation time shorten greatly, the quantity of training reduce

    因為遺傳演算法具有全局隨機搜索能力，魯棒性強、使用簡單和廣泛的特點，它不採用路徑搜索，而採用概率搜索，不用關心問題本身的內在規律，能夠在復雜的、多峰值的、不可微的大矢量空間中迅速有效地尋找到全局最優解，所以可以彌補神經網路學習演算法的不足，使陷入局部最小值的可能性大大減少，使得收斂速度提高，訓練量減小。
  14. At first, in order to prevent the premature convergence of genetic algorithm effectively, the author brings forward a novel dyadic floating - point supplementary mutation operator. then, simulating the natural evolution, the author presents a novel topology, unoriented - connected topology, for parallel genetic algorithm. in the end, an interval decomposed optimization method is brought forward for ipga, which can improve the optimization performance of the algorithm

    為提高演算法的性能，作者對遺傳演算法進行三種改進：首先，為克服遺傳演算法早熟收斂，作者提出一種新的二元浮點補碼變異運算元；其次，模擬生物自然進化模式，為并行遺傳演算法提出了一個新的并行拓撲結構- - - -無定向拓撲連接；最後，作者提出一種區間分解優化思想，來提高對最優解的搜索能力。
  15. Because the designing fin and oar and the experiment fin and oar pro rata, so we can use the coefficients to calculate our designing fin and oar " s rising force. secondly, constituted the control system of pushing fin, and studied its control scheme. lastly, used matlab to simulate our control system, and applied ga to optimize the parameters of pid controller ; from the simulation result we can see the pushing fin has the ability of reducing the ship shake in all speed

    最後，對推力鰭減搖裝置控制系統用matlab語言進行模擬，並應用遺傳演算法理論，對推力鰭控制系統中的pid控制器參數進行優化，並將模擬效果與傳統的鰭的減搖模擬效果進行對比，從模擬效果上可以看出，推力鰭減搖裝置控制系統的減搖效果在低航速下優于傳統的鰭的減搖效果，而且在中、高航速下推力鰭的減搖效果也能達到傳統鰭的減搖效果，打到了設計的目的。
  16. Based on the discussions of the conventional and recent methods of short term load forecasting such as time series, multiple regression approaches and artificial intelligence technologies, this paper presents a hybrid short term forecasting model which combines the artificial neural network ( ann ) and genetic algorithm ( ga ). in order to improve the convergence speed and precision of the back - propagation ( bp ), a new improved algorithm - the adapted learning algorithm based on quasi - newton method is given

    本文首先分析比較了電力系統短期負荷預測的傳統方法時間序列法和回歸方法以及最近的專家系統和神經網路技術的優點和不足，然後針對人工神經網路bp演算法的不足對其進行了改進，採用了基於擬牛頓的自適應演算法，它提高了網路學習效率，具有較快的收斂速度和較高的精度。接著提出了改進的遺傳演算法來改善神經網路的局部收斂性。
  17. This study dealt with the identification and evaluation of 8 maize populations from tropical and subtropical regions under the ecological conditions in zhengzhou, henan. results showed that the significant delaying days to shed and days to silk, discoordinating for the development of male and female, higher plant and ear height, more leaf numbers, high barreness, worse performance of ear traits compared with the ck ( temperate population ) were found, which showed the tropical and subtropical populations could not be utilized directly under the ecological conditions in zhengzhou. by using selection and improvement the tropical and subtropical populations can be used to broaden the genetic base of temperate maize breeding, beause of the greater genetic variation and higher selection potential within each population. the different performances of the sensitivity to photoperiod were observed among different tropical and subtropical populations and different traits. the asi, time to silk, ear height, leaf numbers, grain yield per ear could be used as the good evaluation traits for identifying the sensitivity to photoperiod

    對8個熱帶、亞熱帶玉米群體在鄭州生態條件下的表現進行鑒定和評價，結果表明，熱帶、亞熱帶群體散粉、吐絲期顯著延遲，雌雄不協調，植株和穗位高、葉片數增多、空稈率高，結實性差，果穗性狀均明顯劣於溫帶對照，在鄭州生態條件下不能直接利用，但是群體內具有較大的遺傳變異和選擇潛力，可以用來拓寬現有玉米種質的遺傳基礎；不同熱帶、亞熱帶群體的光周期敏感性不同；不同性狀對光周期反應的敏感程度不同， asi 、吐絲期、穗位高、葉片數、穗粒重可作為鑒定光周期敏感性的較好指標
  18. Effect of relation on heterosis and genetic abilities of plant height in wheat

    輻射對冬小麥株高構成因素雜種優勢和遺傳力的影響
  19. We use different genetic teaching methods to promote student ' s practice of making experiments and utilization of internet resources ; stimulate and direct student ' s desire of exploring the knowledge properly ; impel students to think and analyse deligently ; enhance their ability of thinking, utilizing and operating ; foster student ' s ability to grasp information and self - study ability ; increase student ' s comprehensive ability through all directions to meet the needs of the quick development of life science in 21st century

    摘要通過在遺傳學教學中採用不同的教學方式、加強實驗操作和運用網路資源的實踐，合理引導並激發學生對知識探索的慾望，促使學生勤於思考與分析，提高思維能力、運用能力和動手能力，培養學生具有信息能力和自主學習能力，全方位多角度地提高學生的綜合素質，以適應21世紀生命科學迅速發展的需要。
  20. A lot of sugar beet germplasms with high yield and high sugar content as well as disease resistance have been identified and selected through the appraisal of main agronomic traits, quality analysis and germplasms creation from seventh five - year plan to tenth five - year plan, and some novel superior germplasms with good economic characters, superior adaptability, good combining ability and genetic stability have been created, which have been applied to breeding as pre - breeding, new varieties have been bred to commendably serve for sugar beet production

    摘要通過「七五」至「十五」期間甜菜種質資源的主要農藝性狀鑒定、品質分析和種質創新研究，鑒定、篩選出一大批豐產、高糖、抗病的種質資源材料，同時對其性狀改良，創造出一些經濟性狀優良、適應性強、配合力高、遺傳穩定的新型優異種質，有的已做為預選種應用於我國的育種實踐中，並育成新品種在生產上大面積推廣應用。
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