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典范性状
相关语句
  canonical character
     According to 10 traits values and their phenotypic correlation matriand heritability matrix of a Crossing combination of weak winteringwheat, the canonical character values and canonical heritabilities of F_3families and canonical genetic distances among families were estimatedand cluster analysis was done to these results.
     本文根据一个弱冬性小麦杂交组合的F_3代系统10个性状值及它们的表型相关阵和遗传力阵,估算出系统的典范性状值,典范遗传力、系统间典范遗传距离,並进行聚类分析。
短句来源
     APPROACHES TO CANONICAL CORRELATIONS OF MULTIPLE QUANTITATIVE TRAITS——I. CANONICAL CHARACTER AND ITS HERITABILITY
     关于多个数量性状的典范相关研究——I. 典范性状及其遗传力
短句来源
     Approaches to Canonical Correlations of Multiple Quantitative Traits Ⅰ. Canonical Character and Its Heritability
     关于多个数量性状的典范相关研究 Ⅰ.典范性状及其遗传力
短句来源
     APPROACHES TO CANONICAL CORRELATIONS OF MULTIPLE QUANTITATIVE TRAITS——II. CANONICAL CHARACTER SELECTION FOR THE OFFSPRING POPULATIONS OF CROSSING COMBINATION OF WHEAT
     关于多个数量性状的典范相关研究——II. 小麦杂种后代的典范性状选择
短句来源
     The concepts of canonical character and its heritability are proposed after studying correlation between genotypic and phenotypic variates of multiple quantitative traits with multivariate statistical analysis.
     本文用多元统计分析方法,研究多个数量性状的表现型变量与基因型变量的相关关系,提出了典范性状及其遗传力的概念。
短句来源
更多       
  canonical traits
     A Study of integration and Optimization of Canonical Traits
     多个典范性状的综合优化研究
短句来源
     But when all traits are re- corded for each animal with equal design matrices and one random classifi- cation in the linear model, all correlated traits can be transformed into un- correlated canonical traits through the canonical transformation technique. Then it involves estimation of variance components for each canonical trait and retransformation of variance components on the canonical scale.
     但是在等结构矩阵和只有一个随机因子的线性模型中,通过典型转换使所有的相关性状都变为不相关的典范性状,分别对各个典范性状进行方差组分估计,然后再转换为原始性状的方差组分,这样就简化了计算步骤。
短句来源
     By using decision-making analysis of path analysis,this paper built a path analysis model for the canonical traits and complete decision-making analysis.
     采用通径分析的决策分析方法,对典范性状建立了通径分析化模型,进而完成了对其的决策分析;
短句来源
  canonical trait
     But when all traits are re- corded for each animal with equal design matrices and one random classifi- cation in the linear model, all correlated traits can be transformed into un- correlated canonical traits through the canonical transformation technique. Then it involves estimation of variance components for each canonical trait and retransformation of variance components on the canonical scale.
     但是在等结构矩阵和只有一个随机因子的线性模型中,通过典型转换使所有的相关性状都变为不相关的典范性状,分别对各个典范性状进行方差组分估计,然后再转换为原始性状的方差组分,这样就简化了计算步骤。
短句来源
     Comprehensive canonical trait (CCT) is set up in studying tile canonical correlation of the multiple quantitative characters' phenotypic and genotypic vectors by restriction of breeding objectives using integrative and optimal methods. CCT is a linear combination of s CTs which have larger heritability. The combination has maximal heritability.
     本文运用系统优化原理,利用综合的手段,研究了育种目标约束下多个数量性状表现型向量与基因型向量的典范相关,提出了综合典范性状的数学模型.综合典范性状是S个遗传力较大的典范性状在育种目标约束下遗传力极大化的线性组合.综合典范性状作为选择指标,选择效率高,提高了多目标育种决策的科学性和预见性.
短句来源
     This paper studies the relation between the selective characters' phenotypic vector and objective's genotypic vector under the restriction of breeding objectives and it also sets up the model of comprehensive canonical trait pair by using integreted and optimized methods CCT is a linear combination of S CTPs which has larger indirect hereditary coefficient (IHC) and a maximal IHC under the restriction of breeding objectives. As an indirect selection index,compreherrisive canonical trait can satisfy the needs of multi-objective breeding faily good.
     利用综合优化方法,研究了在育种目标约束下,选择性状表现型向量与目标性状基因型向量的典范相关,提出了综合典范性状对的数学模型.综合典范性状对是S个间接近传系数较大的典范选择-目标性状对,在育种目标约束下间接遗传系数极大化的线性组合.综合典范选择性状.作为间接这择的指标,能较好地满足多目标育种的要求.
短句来源
  “典范性状”译为未确定词的双语例句
     Decision-making analysis of the cnonical traits
     典范性状的决策分析
短句来源
     It can make a sufficient utilization of the information in the test only to study a few canonical characters in practical situations.
     在实际问题中,只须取少数典范性状进行研究就能充分利用试验所提供的信息。
短句来源
     Observed 12 characters of foxtail millet cultivars were analyzed by correlative heritability,canonical charac- ter,cluster and discriminant analytical methods.
     本文对不同地区谷子品种的12个数量性状进行了相关遗传力分析、典范性状分析、聚类分析和判别分析。
短句来源
     , the determination coefficient was 0.9448. Principal component and path analysis showed that soluble solids were typical character of nutrient quality in breeding material selection, which should be selected in the low generation of breeding, moreover the rest characters should be selected in high generation according to breeding aim.
     主成分分析和通径检验表明,可溶固形物为育种材料的营养品质的典范性状。 应在育种低世代进行选择,而高世代按育种目标进行其他性状的选择。
短句来源
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  canonical character
These six universals and two general relations are examined by experiment and numerical calculation of two-layer flow based on the canonical character of the coefficients of tlie fKdV equations.
      
They are intimately related to the Lagrangian variables, on the one side, and have the canonical character, on the other.
      
  canonical traits
After all canonical traits were grouped together, regression coefficients were approximately equal to those for the single traits.
      
Canonical traits were analyzed using the methods described for original traits.
      
Canonical traits showing low relative eigenvalues explained little of the observed variance.
      
Multiple-trait regression coefficients for original effects could be estimated using backtransformation of regression of canonical traits.
      
Table 7 shows the regression coefficients and standard errors for the four canonical traits.
      
更多          
  canonical trait
Except for angularity, conformation traits did not show important substitution effects that could be explained by this canonical trait.
      
For the third canonical trait, the influence was low but positive on milk and protein yields and negative on fat yield.
      
The first canonical trait was highly linked to the yield traits and angularity.
      


The concepts of canonical character and its heritability are proposed after studying correlation between genotypic and phenotypic variates of multiple quantitative traits with multivariate statistical analysis. The first canonical character is the linear combination which has the largest heritability among all linear combinations of the measured traits. And the i'th combination which is named the i'th canonical character has the largest heritability among all combinations of the characters uncorr-elated with...

The concepts of canonical character and its heritability are proposed after studying correlation between genotypic and phenotypic variates of multiple quantitative traits with multivariate statistical analysis. The first canonical character is the linear combination which has the largest heritability among all linear combinations of the measured traits. And the i'th combination which is named the i'th canonical character has the largest heritability among all combinations of the characters uncorr-elated with the previous (i-1) canonical ones. It can make a sufficient utilization of the information in the test only to study a few canonical characters in practical situations. A method for estimating canonical character and its heritability is proposed, and its possible uses in genetics and breeding are discussed.

本文用多元统计分析方法,研究多个数量性状的表现型变量与基因型变量的相关关系,提出了典范性状及其遗传力的概念。第一典范性状是测量性状的所有线性组合中具有最大遗传力的线性组合,第i典范性状则是在与前面i—1个典范性状不相关的那些性状的线性组合中具有最大遗传力的线性组合。在实际问题中,只须取少数典范性状进行研究就能充分利用试验所提供的信息。提出了估计典范性状及其遗传力的方法,并讨论了典范性状在遗传育种研究中应用的可能性。

after studying canonical correlation between the genotypic random ve-ctor g (m dimensions) and the phenotypic random vector p (m dimensions)of multiple quantitative traits P_i=g_i+e_i, i=1, ..., m or p=g+eand solving the matrix epuation (G-λ~2P) b=0 or (H-λ~2R_P)β=0,where G is genotypic covariance matrix (or H=D_P~(-1)GD_P~(-1) is heritabili-ty matrix, where D_P is a diagonal matrix and its i'th diagonal elementis the phenotypic standard deviation of i'th metrical trait) and P is phe-notypic covariance matrix...

after studying canonical correlation between the genotypic random ve-ctor g (m dimensions) and the phenotypic random vector p (m dimensions)of multiple quantitative traits P_i=g_i+e_i, i=1, ..., m or p=g+eand solving the matrix epuation (G-λ~2P) b=0 or (H-λ~2R_P)β=0,where G is genotypic covariance matrix (or H=D_P~(-1)GD_P~(-1) is heritabili-ty matrix, where D_P is a diagonal matrix and its i'th diagonal elementis the phenotypic standard deviation of i'th metrical trait) and P is phe-notypic covariance matrix (or R_P=D_P~(-1)PD_P~(-1) is phenotypic correlation-al matrix) , then finding characteristic roots λ_i~2 (1≤i≤m) and its cha-racteristic vectors b_i (or β_i=D_Pb_i) , the concepts of canonical charac-ter P_i*=g_i*+e*_i, i=1, ..., s

本文用多元统计分析方法,研究多个数量性状的表现型变量与基因型变量的相关关系,提出了典范性状及其遗传力的概念。第一典范性状是测量性状的所有线性组合中具有最大遗传力的线性组合,第i典范性状则是与前面i-1个典范性状不相关的那些性状的线性组合中具有最大遗传力的线性组合。在实际问题中,只须取少数典范性状进行研究就能充分利用试验所提供的信息。提出了估计典范性状及其遗传力的方法,並讨论了典范性状在遗传育种研究中应用的可能性。

According to 10 traits values and their phenotypic correlation matriand heritability matrix of a Crossing combination of weak winteringwheat, the canonical character values and canonical heritabilities of F_3families and canonical genetic distances among families were estimatedand cluster analysis was done to these results. From this, two selectionsfor the offspring populations were conducted. One was directional and independent level selection according to the breading aim for the canonicalcharacters with higher...

According to 10 traits values and their phenotypic correlation matriand heritability matrix of a Crossing combination of weak winteringwheat, the canonical character values and canonical heritabilities of F_3families and canonical genetic distances among families were estimatedand cluster analysis was done to these results. From this, two selectionsfor the offspring populations were conducted. One was directional and independent level selection according to the breading aim for the canonicalcharacters with higher heritability. Another was to keep the genetic di-vergence in the different population of families. It was shown by usingactual case analysis that the former selection was a comprehensive selec-tion with higher reliability and was easy to grasp, the latter could preventthe lose of genetic divergence in progeny which resulted from directionalselection too earl ,

本文根据一个弱冬性小麦杂交组合的F_3代系统10个性状值及它们的表型相关阵和遗传力阵,估算出系统的典范性状值,典范遗传力、系统间典范遗传距离,並进行聚类分析。由此,对杂交后代进行了两种选择,一种是根据育种目标对遗传力高的典范性状进行独立水平法的方向性选择;另一种是对系统的不同类群进行保存遗传差异的选择。实例分析表明,前一种选择是可靠性高並且易于掌握的综合选择,后一种选择能改善系谱法中过早定向选择引起后代遗传变异贫乏的问题。

 
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