定向选择

玉米经长期定向选择和人工驯化栽培，基本丧失了耐渍特性。

Undergoing long-term directional selection and artificial domestication , maize has lost most of the waterlogging tolerance .

本文介绍家蚕高出丝率基础蚕品种125的选育经验，包括亲本材料、定向选择、提高茧丝工艺性状和环境控制等。

This paper introduced the selection and breeding of basic silkworm race 125 , including parent material , directional selection , improvement of technological characters of raw silk and environment control , etc. , which had high raw silk rate .

大豆定向选择群体耐旱性位点基因型分析及QTL定位

Genotype and QTL analysis of drought tolerance loci for directional population in soybean

抗原表位定向选择的人源抗TNF-αFab的鉴定

Analysis of the human anti TNF α Fab obtained with epitope guided selection

用抗原表位定向选择方法人源化抗TNF-α抗体Fab段

Humanization of anti TNF α murine Fab with the method of epitope guided selection

NJS系小鼠的选育研究Ⅱ、近交过程中血清胆固醇含量的定向选择效应

Study on Breeding for NJS mouse strain ⅱ、 directive selection response of serum cholesterol in the course of in breeding

定向选择可能对烤烟品种间遗传关系有较大影响；

The selection pressure had great effects on the genetic relationships between varieties .

混合选择与系谱选择对大豆杂交材料定向选择效果比较的研究

A comparative study on the effectiveness of bulk and pedigree selection in Soybean Crosses

由于人工定向选择，它们的遗传结构已经起了一定的变化，分化系数表明它们之间已经产生了分化。

The genetic structure has changed due to artificial selection and genetic differentiation index indicated slight differentiation among them .

生活的定向选择，要么成功，要么独特。山水为视觉做出持久的承诺。

The life selection should be successful or special and this water and mountain guarantees your vision a permanent promise .

对生性状在不同的遗传背景下，其定向选择的进程和效率是不同的。

When the oppositifolious character is in different genetic background , the process and efficiency of the orientational selection is different .

利用或创造变异，通过人工定向选择将有利的变异固定下来，可实现新品种的培育。

Using or creating variation , and fixing down the favorable genes through the artificial selection , may realize the breeding of the new varieties .

对有益变异进行定向选择，选育出4个新品系，比对照冀豆7号增产11.8%～26.5%

Lines were selected out from elite mutants , which the yield was higher than the check ( Jidou No.7 ) by 11.8 % ~ 26.5 % .

因此在耐热育种中单纯利用杂交优势试图获得超亲优势来显著提高耐热性是不现实的，而应该注重耐热亲本的定向选择。

So it is not practical to improve the heat resistance significantly in breeding by heterosis , but it is supposed to select the heat tolerant parent in breeding .

这可能是由于连续对开花期性状定向选择的结果，也可能还与群体有效含量和选择强度引起的遗传漂变有关。

This might be due to the continuous , oriented selection for the flowering traits and might also be due to the genetic drift induced by selection intensity and effective population size .

分析了鄂玉28的亲本定向选择、配组模式、产量、品质、抗性、现场考察鉴定结果、大田示范结果和栽培技术研究结果。

28 . It analyzes the parents consecutive selection , the pattern of heterosis , the results of output , quality , resistance , scene inspection and appraisal , large-scale field demonstration and cultural technigue .

其中大白菜和小白菜都有含油量在45%以上的高油分种质资源，通过单株定向选择可选出更高含油量的品系。

38.93 % . Moreover , Chinese-cabbage and No-heading Chinese-cabbage have more germplasm resources with over 45 % oil content , so some lines with more oil content may be selected through single directional selection .

，是以乌干达4号为母本与邢台6871杂交，选其优系干枯、黄萎病圃和病钵中连续定向选择多系混合而成。

Is derived from a cross between Uganda 4 ( female parent ) and Xingtai 6871.Selected lines were grown in fusarium and verticillium wilt infected nursery beds and pols , with continual and directional selections made among multiple lines .

因此，可通过对中矮杆、早熟材料的定向选择提高百粒鲜重、标准荚荚宽，达到提高菜用大豆商品品质的效果，提高育种效率。

The net weight per 100 seed and standard pod width could be improved by the selection of short stalk and premature materials , therefore the commercial quality and breeding efficiency of vegetable soybean could be improved at the same time .

总体表现出定向选择占优势，存在部分分歧选择的模式。表明紫萼个体倾向于提早或延迟开花，早开花可以提高种子数和柱头花粉数，晚开花可以提高结籽率。

The overall performance of the dominant directional selection , there is some disruptive selection pattern , showing that individuals in favour of earlier or later flowering . Early flowering can increase the number of seeds and stigma pollens , late flowering can increase the seed set .

广恢122[836-1‖（明恢63广恢3550）F5]是通过有性杂交和定向选择方法育成的适应性广、配合力强、生育期适中、抗稻瘟病的优质籼稻恢复系。

Guanghui 122 , developed from the cross of 836-1 ∥( Minghui 63 / Guanghui 3550 ) F 5 by directional selection , is a new elite indica restorer line with wide adaptability , good combining ability , suitable maturity , high resistance to blast and good grain quality .

研究发现控制权因素是影响定向增发选择的主要因素。

The result indicates that control consideration is the main factor that affect the choice .

学习态度对学习起着定向、选择和动力作用，它是影响学习效果的重要非智力因素。

Learning attitude plays roles in directing choosing and motivating learning and it is the important non-intelligent factor which influences learning results .

伴随经济全球化知识化步伐，企业的空间聚集、市场化知识资产的积聚和跨国公司投资定向化选择，使区域经济的崛起和区域创新体系的发展成为必然。

With the advancement of the global economy and spread of knowledge , concentration of enterprises and knowledge asset and multinationals ' regional investment preference has made it inevitable that regional economy and regional innovation system will speed up its development .

基于买方价值的CBA联赛营销定向策略的选择

The Marketing Orientation Strategy Selection of CBA Basing on Consumer Value

结论利用立体定向技术，选择内侧前脑束为靶点，可建立6-OHDA大鼠PD模型。

Conclusion PD rat model was successfully established by injection of 6-OHDA with the stereotactic technique .

Ti-Al包晶合金定向凝固及组织选择

Directional solidification and microstructure selection for Ti-Al peritectic alloy

绕障定向井三维轨道选择及设计方法

Selection and Design Method of 3D Trajectories in Obstacle passing by Directional Well

定向运动中路线选择的正确与否，直接影响到运动员的比赛成绩。

Route choice in orienteering directly affects the competitive achievement of the players .

定向运动中路线选择的战略战术

Strategies of route choice in orienteering