TDZ促进花生外植体分化及基因转化

以花生成熟胚的上胚轴和胚叶为外植体，通过农杆菌介导转化Bt和CpTI双基因，在共培养基和诱导培养基中加入TDZ诱导不定芽和体细胞胚，实验证明，TDZ有明显促进花生外植体分化的作用，当诱导培养基组成为TDZ0．3mg/L NAA 0.4mg/L，诱导时间为28d，分化培养基为MS时采用TDZ发胚培养基萌发的轴外植体分化率最高，可达73％，GUS基因阳性率3．5％，当诱导培养基组成的TDZ0．2mg/L NAA0.4mg/L，诱导时间为21d，分化培养基为MS时水萌发种胚叶外植体分化率最高，达56％，GUS基因阳性率2．5％。     

裂叶秋海棠的离体快速繁殖

利用野生裂叶秋海棠叶片及叶柄培养，通过两种方式获得大量再生植株。(1)直接从外植体表面诱导出不定芽，最佳诱导培养基为MS 6-BA 3mg／L，不定芽在培养基MS NAA0．5mg／L 6-BA0．5mg／L增殖成丛生芽．(2)先诱导出愈伤组织，再由愈伤组织分化出大量不定芽．最佳愈伤组织诱导培养基为MS NAA0．5mg／L 2，4-D0．5mg／L 6-BA0．5mg／L,愈伤组织不定芽分化培养基为MS 6-BA 1mg／L,试管苗在含1／5MS无机盐的培养基上生根，之后移栽成活率达85％。     

中国水仙（Narcissus tazetta Var.chinensis）基因转化受体系统的建立

通过水仙组织培养已建立起2类基因转化受体系统,一类是适合于基因枪转化的愈伤组织再生系统,另一类是适合于农杆菌介导转化的外植体直接诱导生长系统,愈伤组织的诱导形成以培养基MS＋0．1－0．3mg/L2,4-D 0.2-0.5mg/LNAA为宜,外植体在培养基MS＋4mg/L KT 0.1mg/L NAA中直接诱导生长,可获得较高的成苗率。     

大岩桐的组培快繁和温室栽培

以大岩桐（Sinningia hybrida Hort.）叶柄为外植体,通过2次灭菌后进行组织培养,适宜条件为（1）诱导培养基为MS＋BA2.0mg/L;（2）继代和增殖培养基为MS＋BA1.0mg/L NAA0.5mg/L;（3）生根培养基为MS＋NAA0.2mg/L或MS＋IBA0.5mg/L,大岩桐在适合的栽培条件下生长良好,具有很强的观赏性。     

菊花的组织培养研究

以菊花侧芽茎尖做外植体，通过二次表面灭菌，得到茎尖无菌培养物．根据长出丛生芽的芽数的多少，筛选出适合菊花茎尖离体培养的培养基．MS＋6-BA5．0mg／L＋NAA0．01mg/L的固体培养基适宜于诱导侧芽生长出丛生芽；丛生芽转入到MS＋6-BA3．0mg/L＋NAA0．01mg／L培养基上进行继代培养扩大增殖：取长2～3cm的芽苗在1／2MS＋NAA0．1mg/L培养基上生根并形成完整植株．     

培养因子对绿玉树离体微型快繁的影响

以绿玉树的腋芽茎段和顶芽为外植体，研究不同培养基浓度、不同激素配比、外植体的放置方式以及化学物质PEG、PP333、AgN03等因子对绿玉树离体培养丛生芽产生的影响，以此筛选出绿玉树离体快繁最适培养基及培养途径。结果表明：诱导腋芽、顶芽萌发较理想的培养基为：3／4MS ZT0．5～1mg／L NAA0．01mg／L和1／2MS BA0.5mg／L NAA0．01mg／L，适宜丛生芽增殖的培养基为：MS ZT0．5～2mg／L NAA0．05mg／L GA30.01mg／L，芽的增殖系数为4．5。     

野大麦组织培养及植株再生的研究

以野大麦成熟胚为外植体，接种于MS 2，4-D2．0mg／L KT0．2mg／L NAA0．5mg／L Su3％的培养基中，诱导愈伤组织；然后在培养基MS 2，4-D2．0mg／L KT0．2mg／L NAA1．0mg／L Su3％上进行继代培养，每次继代时间为20天左右；再用MS KT2．0mg／L NAA0．2mg／L Su1．5％进行分化，分化率达80％以上．     

新几内亚凤仙离体快速繁殖技术研究

取新几内亚凤仙具有顶芽或腋芽的新生茎段为外植体，诱导芽体萌发，进行繁殖培养．通过大量试验，筛选出各阶段适宜的培养基组成．萌芽诱导阶段培养在MS 6-BA2．0mg／L NAA0．2mg／L中，顶芽萌发早，生长快；在继代和增殖培养中以MS 6-BA1．5mg／L NAA0．2mg／L培养基效果最好．1／2MS NAA0．2mg／L诱导生根，生根率可达100％．根质量较好；适宜条件下炼苗移栽．试管苗成活率缺95％以上。     

米邦塔食用仙人掌组培快繁技术研究

探索了米邦塔食用仙人掌组培快繁技术。得出不定芽诱导使用培养基MS＋6-BA3．0mg／L＋NAA0．1mg/L，外植体分化率达77．3％；继代增殖使用培养基MS＋6-BA1mg／L＋KT0．5mg／L＋NAA0．3mg/L，试管苗平均增殖倍数达10.19，结合反复利用原外植体的方法，增殖效率可进一步提高；生根培养基使用1／2 MS＋NAA0．1mg／L＋IBA0．1mg／L，生根率达100％，且根系发育优良；驯化及试管苗入地后，以保湿为主要管理措施，可保证移栽成活率在95％左右。     

安祖花的组织培养及快速繁殖研究

以安祖花的叶、叶柄和茎段为外植体在不同培养基上进行诱导愈伤组织和不定芽的发生．筛选出了诱导愈伤组织培养基MS 6—BA1．0mg／L 2，4—D0．5mg／L，不定芽分化及增殖培养基MS 6-BA1．0mg／L IBA0.1mg／L，不断的继代培养，增殖及分化率都很高，将产生的不定芽切割下来转接到1／2MS NAA0．5mg／L的培养基中生根壮苗，生根良好的试管苗移栽后，经过精心的管理。2个月后统计结果。成活率高达96％。     

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.     

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.     

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     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

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     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

Call for Papers

<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