中国水稻农家品种马尾粘败育株细胞质雄性不育系（马…

１９８４年在中国水稻农家品种马尾粘中发现花粉败育型雄性不育株，用协青早选杂和连续回效选育成马协型雄性不育系，对马协不育系的特征特性，开花习性，花粉败育的细胞学特征，细胞质质量，线粒体ＤＮＡ和线粒体ＣＯＤ同工酶等进行比较研究，结果表明，马协雄性不育系是一种新的细胞质雄性不育系，具有重要的理论意义和实践价值，利用马协不育系与明恢６３配组马协６３杂交稻组合具有优质，高产，多抗特点，通过了湖北省和僵杂交稻     

籼型光敏核不育水稻的RAPD分析

以籼型光敏核不育水稻８９０２ｓ及其可育近等基因系材料８９０２的核ＤＮＡ为模板，进行ＲＡＰＤ分析，从检测过的１５个引物中发现引物ＯＰＡ－０４在可育品系和不育品系中扩增出１个１０００ｂｐ的差异带，并初步认为此差异与育性相关     

家畜育种中MAS的遗传标记与QTL

简要评述了在家畜育种中标记辅助选择（ＭＡＳ）所适用的遗传标记系统及对数量性状位点（ＱＴＬ）和标记的基本要求．对ＭＡＳ中遗传标记与ＱＴＬ的紧密连锁之意义进行了讨论，认为遗传标记与ＱＴＬ间的连锁程度是决定ＭＡＳ效能的关键因素．并简述了获得与ＱＴＬ紧密连锁之遗传标记的一般方法     

水稻光敏与温敏核不育基因之间互作效应与利用研究

选育不育期败育彻底、不育性稳定的光、温敏不育系是目前两系法杂交稻制种安全可靠的重要保证.本研究利用光敏不育系7001S与安全型温敏不育系广博S,广培S杂交,将农垦58S光敏不育基因与安农S温敏不育基因重组在一起.进行了重组体的不育性和不育稳定性研究.安农S核不育基因使得重组型光敏不育系的不育性变得非常稳定,不同来源的重组型光敏不育系互交杂种F2代光敏不育株率达70%以上,容易从中筛选到不育起点温度低的重组型光敏不育系.将光敏不育基因回交转移到广博S和广培S中,得到与广博S或广培S相似的重组型光敏不育系光广博S,光广培S,其不育起点温度提高.用光广博S(或光广培S)为父本与广博S(或广培S)杂交产生了不育起点温度极低的温敏不育F1代;用广博S与其重组型温敏不育近等基因系光温广博S杂交,其F1代不育起点温度也很低.研究表明,光敏不育基因与温敏不育基因重组,能够解决光敏不育系难获得和败育不彻底的问题;短日高温下,光敏不育性对温敏不育性表现上位作用;控制农垦58S不育类型不育起点温度表达的遗传因子与安农S不育类型的很可能不同,建立安全型温敏不育系的带有光敏不育基因的近等基因系(重组型光敏不育系或者重组型光温敏不育系),用其作为父本与安全型温敏不育系杂交,其F1代可代替安全型温敏不育系用于生产.     

野栽远缘杂交来源的反向温敏核雄性不育系不育性遗传研究

利用3个来源于野生稻与栽培稻杂交后代的反向温敏不育系R6S、N13S、Tb7S为材料,开展了反向温敏不育系不育性遗传研究,结果表明反向温敏不育系N13S的育性是细胞核内1对隐性基因控制的;Tb7S的育性是受隐性核基因控制的,F2代的育性分离比为9∶7,不育性状表现为2对基因的独立遗传;R6S的F2代育性分离比为37∶27,受细胞核内的3个隐性基因位点分别位于不同染色体上而通过互补作用的独立遗传.为进一步分离、定位及克隆有关这些反向温敏不育基因及发展分子标记辅助选择选育反向温敏不育系奠定了良好的遗传学基础.     

籼型三系不育系红矮Ａ和恢复系绵恢２００９主要性状的配合力分析

通过４个不育系和５个恢复系所配２０个组合１０个性状的方差分析和不育系、恢复系的一般配合力及特殊配合力杨对效应值的比较,表明籼型新不育系红矮Ａ在千粒重、单株粒重、穗长、结实率等性状上的配合力明显高于珍汕９７Ａ,其它性状与珍汕９７Ａ具有相似的配合力。绵灰２００９穗着粒、穗实粒、单株粒重等性状的配合力明显高于明恢复６３,结实率和全生育期与明恢６３具有相似的配合力。     

水稻光温敏核不育系不育性表达的同步性研究

以农垦５８Ｓ、７００１Ｓ、５０４７Ｓ、Ｗ６１５４Ｓ、ＫＳ９、培矮６４Ｓ、安农１Ｓ和５４６０Ｓ８个不同类型的水稻光温敏核不育系为材料，在广州（２３°０８′Ｎ）盛夏７月～８月份对各不育系的不育性表达进行了系统的比较研究，并对育性转换的同步性进行了观察。结果表明，不育性表达的同步性以安农１Ｓ和７００１Ｓ较好，群体不育性整齐，其他６个不育系的不育性表达的同步性较差，株间、株内穗间、穗内颖花间的花粉育性差异显著或极显著。连续单株套袋对降低株间、株内颖花间的花粉育性差异效果不大。遗传纯合的不育系单株间、株内颖花间的育性转换是不完全同步的。不育同步性可作为评价光温敏核不育系优劣的一个重要指标     

胞质对温光敏不育小麦育性性状表现的效应初探

通过研究以温光敏不育小麦Ｃ４９－８９Ｓ和绵阳２９号组配的正反交组合分离世代在不同播期中育性平均值的大小，探讨了细胞质对温光敏不育基因表牵影响，结果表明：温光敏不育基因的表达不是通过胞质与细胞核互作产生的，但胞质对世界代育性平均值的大小能产生作用，这种作用在早播时存在，随着播期的推迟，温光条件的改善，这种作用表现不明显，讲座了胞质效应在两系杂种优势利用上的可能性。     

籼粳我稻米品质性状恙农艺性状之间的遗传协方差分析

用２个籼型裟光温敏核不育系和７个粳型广亲和品种为材料，按ＮＣⅡ设计配制杂交组合，获得亲本、Ｆ１及Ｆ２代的籽粒群体，对８个主要品质性状和６个农艺性状进行测定，按混合线性模型的分析方法对品质性状与农艺之间的遗传方差进行了研究，结果表明：在籼粳亚种间杂交组合中，稻为理化品质性状与植株农艺性状之间遗传协方差大都不直接加性／母体加性协方差，外观品质性状与农艺性状之间的遗传协方差则主要是直接加性／母体加性协方     

籼粳杂交稻米品质性状与农艺性状之间的遗传协方差分析

用２个籼型水稻光温敏核不育系和７个粳型广亲和品种为材料，按ＮＣⅡ设计配制杂交组合，获得亲本、Ｆ１及Ｆ２代的籽粒群体，对８个主要品质性状和６个农艺性状进行测定，按混合线性模型的分析方法对品质性状与农艺性状之间的遗传协方差进行了研究，结果表明：在籼粳亚种间杂交组合中，稻米理化品质性状与植株农艺性状之间的遗传协方差大都为直接加性／母体加性协方差，外观品质性状与农艺性状之间的遗传协方差则主要是直接加性／母体加性协方差和母体加性／母体加性协方差，细胞质效应协方差也普遍存在．     

Markedness and its Interpretation in Language Use

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.     

Features of Women's language

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

低渗透非均质砂岩油藏启动压力梯度研究

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。     

On Tragic Consciousness In The Works By Ernest Hemingway

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

Achieving Unusual States of Matter Under High Pressure

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-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

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-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

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