遺傳優勢的 的英文怎麼說

中文拼音 [yízhuànyōushìde]
遺傳優勢的 英文
prepotent
  • 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）...
  • 勢 : 名詞1 （勢力） power; force; influence 2 （一切事物力量表現出來的趨向） momentum; tendency 3 （自...
  • 的 : 4次方是 The fourth power of 2 is direction
  • 遺傳 : [生物學] heredity; hereditary; inheritance; inherit
  1. The method proposed in this thesis do well in solving the problems of multi - damping - ratio - spectra simulation. it is convenient to obtain the pareto optimal solution set of the multi - object question by using implicit parallel genetic algorithms and the method can meet the practical needs for simulating ground motions coinciding with multi - damping - ratio - spectra in seismic design. the crossing rate and variance rate are important parameters of genetic algorithms which affect the rate of convergence, the adapting rate of cross and variation in this paper can auto - adapt and according to stand or fall of current sample, it assures the sample approach to the pareto optimal solution set in fast convergent speed

    較好地解決多阻尼比反應譜擬合問題；本文方法通過一次運行就能獲得一組具有集系特性的地震動，在擬合多阻尼比反應譜的人造地震波集系的模擬方面有傳統方法所不能比擬的優勢，產生的人造波或人造波集系可滿足工程抗震設計需要；在遺傳演算法中，交叉概率和變異概率是影響收斂速度的重要參數，本文採用的改進自適應交叉概率和變異概率，可以根據當前樣本的好壞程度來自動地選擇適當的交叉概率和變異概率，以保證演算法始終以較好的速度向pareto最優解集逼近。
  2. Epistasis and genotype x environment interaction exist universally and have been testified by a lot of researches. these effects play an important role in inheritance, evolution and heterosis in plants

    上位性和基因型環境互作存在的普遍性利它們在植物遺傳、進化和雜樸優勢中的重要作用已為大量研究所證實。
  3. Genetic analysis of heterosis for hybrid tulip tree

    雜種馬褂木雜種優勢的遺傳分析
  4. Analysis of heterosis and heredity of main characters in winter wheat

    冬小麥主要性狀的雜種優勢測定和遺傳分析
  5. Genetic effects and heterosis analysis for yield and quality traits in kenaf hibiscus cannabinus l

    紅麻產量和纖維品質性狀的遺傳效應與雜種優勢分析
  6. Because the genetic distances of yungui indica and south china indica were bigger than those of all other ecotypes, they sere grouped into the heterotic ecotypes of indica rice

    由於雲貴秈和華南秈與其它生態型之間的遺傳距離均較大，故初步將其確定為秈型水稻優勢生態型。
  7. It is very important to estimate the basic parameters in helicopter preliminary design. neural network ( nn ) has the advantages in estimating accuracy and generalization over traditional methods. however, there are some difficulties in using nn, e. g., how to select a proper network structure and the number of hidden layers. in this paper, structure and connection weight of a three - layer nn are optimized by genetic algorithm, and the optimized network is applied to helicopter sizing. the proposed method can not only give an optimal nn structure and connection weight, but also reduce the prediction error and has the capability of self - learning when the latest data are available. furthermore, this method can be easily applied to helicopter design systems

    在直升機初步設計階段估算其基本參數是很重要的.神經網路的通用性和精度比傳統的估算方法有更多的優勢，但是在應用神經網路時存在如何選擇合適的網路結構和隱層節點數目等一些困難.應用遺傳演算法優化三層神經網路結構和連接權重，並將優化得到的網路應用於直升機參數選擇中.該方法不但可以給出一個最優的神經網路結構和連接權重，而且降低了估算誤差，具有及時應用最新數據學習的能力.此外，該方法易於在直升機設計系統中得到應用
  8. 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
  9. As the important index in the study of human population genetics, tongue moving types and behavioral traits of lateral functional dominance are correlative with genomic factors

    舌運動類型特徵和一側優勢功能特徵與遺傳因素有關，是人類群體遺傳學研究的重要指標之一，目前多數特徵的遺傳方式尚未確定。
  10. Selection of dominant populus euphratica oliv. and construction of its genetic markers in tarim river section with low groundwater

    塔里木河流域低地下水位區優勢胡楊品種的篩選及其遺傳標記的構建
  11. Monte carlo simulations were conducted to study the new approaches of qtl mapping, the results indicated that general least squares ( gls ) method, which was widely applied in mixed linear model, could unbiasedly estimate all genetic main effects, including additive effects, dominance effects and epistatic effects of additive by additive, additive by dominance, dominance by additive, dominance by dominance. the interaction effects between genetic main effects and environments could also be predicted unbiasedly by linear unbiased prediction ( lup ). the heterosis prediction based on qtl effects was also unbiased

    對新提出的qtl分析方法進行了montecarlo模擬研究，結果表明，廣泛應用於混合線性模型的廣義最小二乘法（ gls ）能夠無偏估計加性效應，顯性效應以及加加、加顯、顯加、顯顯上位性效應等各項遺傳主效應；運用線性無偏預測法（ lup ）能夠無偏預測上述各項遺傳主效應與環境的互作效應；基於qtl效應的雜種優勢預測也是無偏的。
  12. Correlation between genetic distance and yield heterosis of hybrid aromatic rice

    雜交香稻親本遺傳距離與產量雜種優勢的相關性研究
  13. Genetic distance detected with rapd markers among rice cultivars oryz a sativa l. and its relation to heterosis

    分子標記水稻遺傳距離及其與雜種優勢的關系
  14. Analysis on population genetic variation and its correlation to heterosis of body weight using microsatellite dna markers in yellow plumage broilers

    黃羽肉雞群體遺傳變異的微衛星分析及其與體重雜種優勢的關系
  15. 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
  16. Population genetic structure was studied using rapd analysis to reveal the relationship between the genetic variations and heterosis

    同時採用rapd技術對f1代不同群體的遺傳結構進行比較，研究群體內的遺傳變異與雜種優勢的關系。
  17. It is a global search algorithm which combines the respective advantages of hybrid genetic algorithm and neighborhood search algorithm

    它綜合了遺傳演算法和鄰域搜索演算法各自優勢的全局搜索演算法。
  18. To explore the potential values of autopolyploid rice, the authors thought that it was worth studying mere in the following four aspects : the possibility in direct utilization of autotetraploid rice, the possibility in utilization of heterosis of autotetraploid rice, the possibility in transfer of allogenic substances and the enrichment of rice gene by using autopolyploid rice en the bridging parent, and the genetic tides of important characters in autopolyploid rice

    為了挖掘同源多倍體水稻的潛在利用價值，在今後的研究中有如下4條途徑值得探索，即探索直接利用同源四倍體水稻的可能性、探索利用同源四倍體水稻雜種優勢的可能性、探索以同源多倍體水稻為橋梁完成異源遺傳物質轉移和豐富水稻基因庫的可能性探索同源多倍體水稻特徵特性的遺傳規律。
  19. This thesis contrasts and analyses the different calculation - method, and improves the genetic algorithm in the parameter inversion of the rock and soil engineering. the strategies are mainly in the following three aspects : 1, new searching way is compositely searching genetic algorithm which is made up of the acceleration method and genetic algorithm when it partially calculates in the later time ; 2, index function is inducted in gengetic operators, at the same time repeated select and double exchange pool are used ; 3, splicing crossover, which reserves some new evolution factions, improves authority function accaunting the capabilities and kinds

    本文對優化演算法中不同求解方法進行對比分析，針對遺傳演算法在巖土工程參數反演運算中進行了改進，改進的策略主要集中於三個方面： 1 、提出了在遺傳演算法中融入形加速法的改進方法? ?復合遺傳搜索法； 2 、針對遺傳運算元的選擇策略，引入指數適值方法，設置雙交換池，提出了重復篩選法； 3 、加強對劣勢種群的內部優良信息的遺傳功能的改進，引入權函數，擴大可交叉運算元的種類，保留各運算元的進化功能，提出了融合交叉運演算法。
  20. Effects of opposite character on heterosis of yield characters and heredity of combining ability were studied by using inbred lines and hybrid combinations of opposite and altefive, which were bred through opposite gene transfer in maize

    摘要本文利用對生基因轉育獲得的對生與互生自交系及其雜交組合，研究了對生性狀對產量性狀雜種優勢和配合力的遺傳效應的影響。
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