qtl 中文意思是什麼

qtl 解釋
數量性狀遺傳位點
  1. 5. twenty - one and seventeen qtls were identified in qtl mapping analysis of heading date and kilo - grain weight respectively

    對抽穗期和千粒重的qtl定位分析，分別發現了21個和17個qtl 。
  2. Genetic models were constructed for qtl mapping by two - dimensional searching. corresponding analysis methods were also proposed, which could estimate additive effects, dominance effects, epistatic effects of additive by additive, additive by dominance, dominance by additive, dominance by dominance, and could predict their interaction effects with environments

    構建了可以估汁加性效應、顯性效應、加加、加顯、顯加、顯顯上位性效應以及預測這些效應與環境互作效應的qtl定位兩維搜索遺傳模型，提出了相應的分析方法。
  3. The estimation of additive and dominance effects through qtl analysis by one - dimensional search while ignoring epistases showed similar accuracy to that by two - dimensional search by including epistases. existence of epistases could decrease the precision for the estimation of additive and dominance effects. the estimation of genetic main effects would be biased if ignoring the interaction effects of qtl x environment ( qe )

    忽略上位性效應的一維搜索qtl分析對加性效應和顯性效應的估計精度與包括上位性的兩維搜索qtl分析對這兩種效應的估計精度相差不大，上位性的存在可能會降低對這兩種效應估計的精度；忽略qtl環境（ qe ）互作效應會導致對遺傳主效應的有偏估計，而包括qe互作效應的多環境聯合分析能夠提高對遺傳主效應的估計精度。
  4. 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。
  5. The new measures are a function of the genetic distance between the marker locus and a qtl. through simulations, we found that when marker allele frequencies vary across loci, the previous hwd measures are biased and not powe

    計算機模擬表明，當各標記基因頻率不同時，用以前的hwd指數精細定位會產生偏差，新的指數可以有效的進行精細定位，使用y > u和y < t的樣本的lcd的功效普遍比僅僅使用y > u的樣本的氣回，的功效高。
  6. Principal factors affecting the power of detection and accuracy of qtl

    數量性狀基因作圖精度的主要影響因子
  7. ( 4 ) the results of qtl mapping indicated that the inheritance of yield traits was very complex, the explanation as follows : additive effects except for sterile spikelet number per spike ( ssns ), qtls of additive effects were tested for all other traits, with 10 qtls for 1000 grain weight ( kgw ). the large variance of the effect values and the contribution rate of qtls indicated that the effects are difference for different qtls

    14 。 （ 4 ）通過對產量性狀qtls作圖，發現產量性狀的遺傳非常復雜，可以從4個方面說明：加性效應除不孕小穗數外，各性狀均檢測到了表現加性效應的qtls 。其中，在各環境聯合分析下，檢測到了10個千粒重qtls ，各qtls的加性效應值和對群體變異的貢獻率也存在很大差異，說明不同的qtls不是等效的。
  8. The combination of statistical modelling, genetics, and developmental biology begs many questions, such as the patterns of genetic control over development, the duration of qtl effects, as well as what causes developmental trajectories to change or stop changing

    函數作圖綜合了生物學機制的數學特性和性狀遺傳作圖的統計學特點，結合統計模型、遺傳學和發育生物學的函數作圖策略，力求解決諸如發育的遺傳控制模式、 qtl的持續效應以及引起發育過程中啟動和終止的遺傳機制等問題。
  9. 6. the results of heterosis prediction based on qtl effects showed that heading date had negative general mid - parent

    群體估汁y qtl遺傳主效應和或q廠互作效應預測單交後代雜種優抖。
  10. Qtl mapping and research of crop genetics

    定位在作物遺傳育種上的應用
  11. Using the qtdt ( quantitative trait transmission disequilibrium test ), we did not find significant results for association or linkage between the ahsg gene and bmd variation at the spine or hip. our data did not provide evidence to support the ahsg gene as a quantitative trait locus ( qtl ) for the bmd variation in a chinese population

    通過數量性狀傳遞不平衡法（ quantitativetraittransmissiondisequilibriumtest ， qtdt ） ，沒有檢測到ahsg基因與腰椎和髖部骨密度變異之間明顯的關聯或連鎖，因此我們的數據不支持ahsg基因是中國人群中導致骨密度變異的數量性狀位點（ quantitativetraitlocus ， qtl ） 。
  12. Screen of high soluble solid content qtl from lycopersicon hirsutum using molecular marker

    利用分子標記篩選源於野生多毛番茄的高可溶性固形物的基因
  13. This article reviews the main aspects of application of molecular markers in pea, including genetic diversity, the construction of genetic map, gene localization and qtl analysis

    作者綜述了豌豆分子標記的種類及其在豌豆種質資源遺傳多樣性、遺傳圖譜構建、基因定位、 qtl分析等方面的研究進展。
  14. Qtl mapping of yield traits was carried out by using molecular markers in this paper. the main methods and results are as follows : ( 1 ) a population of 131 recombinant inbred lines ( rils ), ril - 8, were created from the cross of chuan35050 and shannong483

    本文對小麥產量性狀進行了qtls作圖，主要方法和結果如下： （ 1 ）本研究創建了包括131個系的小麥rils群體? ? ril - 8 ，其組合為「川35050山農483 」 。
  15. Our study shows that the ahsg gene may be associated with bone size at total hip ( especially at the intertrochanteric region ) in chinese men. however, our data do not suggest that the ahsg - 5ac i marker is closely linked to a qtl for bone size variation in chinese

    因此我們的研究表明ahsg基因可能與中國男性的髖部（特別是轉子間）的骨大小相關聯，但我們的數據並不支持ahsg基因的sac標記是中國人群中導致骨大小變異的數量性狀位點或與其連鎖。
  16. Using the test of single environmen, 38 qtls of additive effects distributing on 16 chromosomes were obtained. the range of contribution rate in different single qtl is 5. 08 - 19. 89 % ; 52 interaction effects distributing on 17 chromosomes were obtained. the range of contribution rate in different single interaction effect is 4. 51 - 57. 14 %, with contribution rate of 57. 14 % of interaction effect between locus 3d - 1 and locus 7b - 1 in environment 4

    在不同環境分別進行分析下，檢測到9個性狀的38個次加性效應qtls ，分別位於16條染色體，單個qtls貢獻率變化范圍為5 . 08 19 . 89 ；檢測到9個性狀的52對次qtls互作效應，位於17條染色體，單個互作效應的貢獻率變化范圍為2李斯深：小麥產量性狀qth的分子標記定位4
  17. Qtl mapping for the 9 yield traits was carried out using qtlmapper version 1. 0. the main results are as follows : using the combined test of the four environments, 39 qtls of additive effects distributing on 14 chromosomes were detected. the range of general contribution rate of additive effect qtls for different traits is 1. 83 ~ 27. 24 %, and the range of contribution rate of different single qtl is 1. 06 - 8. 93 %

    利用qtlmapperversion1 . 0作圖軟體進行了產量性狀的qtls作圖，主要結果如下：在各環境聯合分析下，共檢測到9個性狀的39個加性效應qtls ，涉及14條染色體，各個性狀的總貢獻率變化范圍為1 . 83 27 . 24 ，單個qtl貢獻率變化范圍為1 . 06 8 . 93 ；共檢測到9個性狀的41對qtls互作位點，涉及用於分析的全部18條染色體，各個性狀的總貢獻率變化范圍為1 . 26 36 . 15 ，單今互作效應的貢獻率變化范圍為1 . 20 13 . 30 。
  18. Formula for prediction of general heterosis and interaction heterosis of single - cross offspring based on qtl effects were deduced

    推導了基於qtl效應的單交後代普通雜種優勢和互作雜種優勢預測公式。
  19. However, most of current methods for qtl mapping cannot simultaneously analyze epistases and their interaction with environments

    然而，現行qtl作圖方法大多不能同時分析上位性及其與環境的互作效應。
  20. Considering the characteristic of common mapping populations and basing on the principles of composite interval mapping through mixed linear model suggested by zhu ( 1998 ), zhu and weir ( 1998 ), a novel strategy for qtl mapping was proposed in this study, which is adapt to analyze f, population, especially permanent f2 population. in the present study, a new approach for heterosis prediction was also proposed

    考慮到常用作圖群體的特點，根據朱軍（ 1998 ）及zhu和weir （ 1998 ）提出的基於混合線性模型的復合區間作圖原理，本研究提出了一套全新的qtl定位策略，適于分析f _ 2群體特別是永久f _ 2群體，並提出了基於qtl效應的雜種優勢預測新途徑。
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