美国月桂樱的组织培养及植株再生

以春季萌发的美国月桂樱嫩枝为外植体诱导丛生芽,在MS 0.5 mg/L BA 0.01 mg/L NAA的培养基上.其丛生芽诱导率达100%,在继代培养基中选择MS 1.0 mg/L BA 0.1 mg/L NAA培养基.不定芽增殖较快,后将增殖苗接入MS 1.0mg/L KT 0.1 mg/L NAA培养基上壮苗,其生长状态最好.结果发现,赤霉素对芽的伸长没有效果.当芽伸长至3～4 cm时,切下置于1/2MS 1.0 mg/L NAA的生根培养基中,生根率达100%,移栽成活率达40%.     

福建山樱花的组织培养及植株再生

以春季萌发的福建山樱花嫩枝为外植体诱导丛生芽。在 1 /4MS +BA1 .0mg/L +IBA0 .0 1mg/L的培养基上 ,其丛生芽诱导率达 87.5 % ;在继代培养中选择MS +BA1 .0mg/L +IBA0 .1mg/L +GA30 .3mg/L或KT1 .0mg/L +NAA0 .1mg/L +GA30 .3mg/L培养基 ,不定芽增殖较快。赤霉素对其不定芽的伸长有明显效果 ,当芽伸长至 3～ 4cm时 ,切下置于生根培养基 1 /2MS +NAA1 .0mg/L +IBA1 .0mg/L +BA0 .75mg/L中 ,生根率达 90 %以上 ,移栽成活率达 95 %。     

福建省山樱花的组织培养及植株再生

以春季萌发的福建山樱花嫩枝为外植体诱导丛生芽 。在1／4MS＋BA1．0mg/L IBA0.1mg/L的培养基上，其丛生芽诱导率达87．5％；在继代培养中选择MS＋BA1．0mg/L IBA0.1mg/L GA30.3mg/L或KT1.0mg/L NAA0.1mg/L BA30.3mg/L培养基，不定芽增殖较快。赤霉素对其不定芽的伸长有明显效果，当芽伸长在3－4cm时，切下置于生根培养基1／2MS＋NAA1.0mg/L IBA1.0mg/L BA0.75mg/L中，生根率达90％以上，移栽成活率达95％。     

常绿杨植株再生体系的建立

以水培常绿杨(Populus deltoides60/160×P.nigra'chile')枝条得到的叶柄为外植体,探讨了常绿杨植株再生的方法.结果表明:在MS BA0.3 mg/L NAA0.1 mg/L培养基上,不定芽的分化率最高,为82.5%;不定芽在MS BA0.2 mg/L NAA0.05 mg/L培养基上的继代增殖系数为7.2;在继代增殖培养基中添加0.4 mg/L GA3时,对不定芽的增殖和伸长有显著效果;在生根培养基1/2MS NAA0.05 mg/L上,生根率达到96.5%.     

铁皮石斛原球茎生长分化及生根壮苗研究

目的:筛选适宜铁皮石斛原球茎生长分化及生根壮苗的培养基,提高继代扩繁系数和组培苗的质量.方法:在相同的培养条件下,把相同发育阶段的原球茎接种于含不同激素比例的培养基中生长;把丛生芽接种于蔗糖浓度不同的培养基中生长;把相同高度的幼苗接种于含不同附加物的培养基中生长;对结果所产生的不同生长状况进行综合分析.结果:原球茎的增殖以1/2MS添加BA2.0mg/L NAA0.5mg/L或BA3.0mg/L NAA0.5mg/L的激素比例为佳;原球茎分化以1/2MS添加BA2.0mg/L NAA0.2mg/L或BA3.0mg/L NAA0.2mg/L的激素比例为佳;丛生芽的生长中以30%蔗糖浓度的培养基为佳;生根壮苗中最佳的附加物为香蕉.     

杜仲组织离体培养研究

以杜仲(EncommiaulmoidesOliver)当年生枝条的叶片、带芽茎段为外植体,基本培养基为MS,附加不同浓度的BA、KT和NAA.最佳芽诱导培养基为:MS KT1 0mg/L NAA0 1～0 5mg/L;MS BA2 0mg/L NAA0 1～0 5mg/L,最佳芽丛增殖培养基为:MS KT2 0mg/L NAA0 1～0 2mg/L;MS BA1 0～2 0mg/L NAA0 1～0 2mg/L;MS KT2 0mg/L IBA0 1～0 2mg/L;MS BA1 0～2 0mg/L IBA0 1～0 2mg/L,单芽增殖培养基:MS KT1 0mg/L NAA0 1mg/L,生根培养基:13MS KT0 1mg/L NAA0 5mg/L.     

多因子正交试验对长春花离体培养条件的筛选

应用正交设计法考察了植物生长物质、蔗糖对长春花愈伤组织诱导、丛生芽诱导和生根培养的影响。最佳愈伤组织诱导培养基为MS＋2，4－D0.8mg/L NAA 1mg/L ZT 0.2mg/L。丛生芽诱导最佳培养基为MS＋6－BA0.2mg L NAA 0.3mg/L＋蔗糖30g/L，最佳生根培养基为1／2MS＋NAA 0.2mg/L IBA 0.2mg/L 蔗糖30mg/L。     

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．     

大叶白麻的离体培养及植株再生的研究

在附加激素的MS培养基上,培养大叶白麻消毒茎切断,诱导产生愈伤组织和丛生芽。经过继代培养,建立了大叶白麻无性繁殖系,实验结果表明:1)培养基MS+6BA1mg/L+NAA2mg/L愈伤组织诱导,MS+6BA1mg/L+NAA0.2mg/L及MS+6BA2mg/L诱导外殖体产生丛生芽和继代培养,1/2+IAA0.2mg/L诱导生根效果最好。     

油菜萝卜胞质雄性不育系与诸葛菜属间杂种回交一代(BC1)的快速繁殖及生根

将油莱0guCMS与诸葛菜属间杂种田交一代(BC1)，在MS附加不同激素浓度的基本培养基上诱导丛生芽．结果发现，MS＋1．5mg/L 6—BA 0．15mg/L NAA对诱导丛生芽有较好的效果，丛生芽增殖系数可达3．2．小芽生根培养基以MS 0．1mg/L NAA的效果较好．     

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     

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     

Journal of Donghua University ( English Edition) Contents of Volume 31

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