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1.
RAPD分子标记与群体遗传多态性分析   总被引:3,自引:0,他引:3  
综述了RAPD分子标记技术的基本原理和基本方法,并介绍了该技术在群体遗传多态性研究中的应用及分子数量分析方法。  相似文献   

2.
综述了近年来各种遗传多样性检测技术在丰翅目昆虫研究中的应用概况,认为这些检测技术可以多层次、多角度地揭示丰翅目昆虫的遗传多样性,且有十分广泛的应用前景。  相似文献   

3.
DFP技术的研究动态   总被引:1,自引:0,他引:1  
综述了DNA指纹技术现阶段在动物和植物中的研究现状,对DNA指纹技术产生以来在人类遗传学、医学以及动物遗传育种领域中的应用作了详细的介绍,展望了DNA指纹技术的发展前景.  相似文献   

4.
谢会杰 《科技信息》2009,(19):375-375
介绍了微卫星标记在水稻抗病育种中的应用研究进展,分析了目前微卫星标记在应用中所存在的问题,提出相应的解决方法,以期推动该技术在抗病育种研究中的应用,从而加速育种进程。  相似文献   

5.
薛若冰  刘元力 《山西科技》2004,(4):19-19,21
文章介绍了DNA技术的产生、发展历程、原理特征及其应用。  相似文献   

6.
DNA指纹技术及其在动物遗传育种上的应用   总被引:2,自引:0,他引:2  
综述了DNA指纹技术发展和研究现状.并介绍了DNA指纹技术在动物遗传上的应用情况  相似文献   

7.
综述了基因枪法、花粉管通道法、离子束介导法、农杆菌介导法在小麦遗传转化上的应用及发展,展望各种转化技术的应用前景.  相似文献   

8.
RAPD技术在遗传多样性研究中的应用   总被引:4,自引:0,他引:4  
张晗  沙伟 《贵州科学》2003,21(3):81-85
近几年来,RAPD技术在遗传多样性研究中的应用取得很大进展,就其在收集种质资源、遗传育种物种进化及鉴定、基因组图谱构建和基因定位及分离等方面的应用进行了综合评述,并对RAPD的优点和缺点及对策进行详述。  相似文献   

9.
DNA分子遗传标记技术在药用植物学中的应用   总被引:3,自引:0,他引:3  
概述了DNA分子遗传标记技术在药用植物学中应用的理论依据,并综述了该技术在生药鉴定、亲缘关系、生物多样性保护、药材道地性和遗传育种等方面的研究进展。  相似文献   

10.
本文对 DNA 指纹技术在动物个体识别、品系分析、亲缘关系分析和育种等方面的应用进行了综述.  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
何延凌 《科技信息》2008,(4):258-258
Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women's language, more attention should be paid to language use in social context. What's more, the linguistic phenomena in a speaking community can be understood more thoroughly.  相似文献   

13.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

14.
As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.  相似文献   

15.
正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-  相似文献   

16.
We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-  相似文献   

17.
正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that  相似文献   

18.
For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the  相似文献   

19.
<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with  相似文献   

20.
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