草莓不同基因的再生能力比较

为选择 生能力较好的草莓品种并建立基因转化受体系统，本试验对草莓４个栽培品种Ｈ６、哈尼、明晶，长虹１号进行了基因型筛选。结果表明，在这４仃品种中，明晶的再生能力最强，长虹１号次之，Ｈ５与哈尼的再生系统则不易建立。     

苹果叶片不定芽的高频诱导及植株再生的研究

体外建立并扩繁了苹果品种“乔纳金”、“新世界”、“王林”,“北斗”的无性系,在ＭＳ附加ＢＡ０．５￣２．０ｍｇ／Ｌ、ＩＢＡ０．１￣０．５ｍｇ／Ｌ的培养基中,２个月内芽的数量可增至５倍,在ＭＳ培养基附加ＢＡ５．０ｍｇ／Ｌ ＩＡＡ０．２ｍｇ／Ｌ的下,４个品种的叶片再生率可达９０％以上,其中以“乔纳金”最高,可达１００％,当ＴＤＺ为３ｍｇ／Ｌ,ＩＡＡ０．２为０．５ｍｇ／Ｌ时,其再生频率明显高于ＢＡ。     

荞麦组织培养中的植株再生

用荞麦无菌苗的幼茎和幼叶作外植体分别接种在ＭＳ补加不同激素组合的培养基上培养获得再生植株。实验结果表明,适宜诱导愈伤组织的激素组合为２．４－Ｄ４．０ｍｇ／Ｌ＋ＫＴ０．２ｍｇ／Ｌ,适宜愈伤组织生长的激素组合为２．４－Ｄ１．０ｍｇ／Ｌ＋ＫＴ１．０ｍｇ／Ｌ。诱导芽的较适宜的组合为６－ＢＡ３．０ｍｇ／Ｌ＋ＩＡＡ０．１ｍｇ／Ｌ,不定芽接种到含ＭＳ＋ＩＢＡ２．０ｍｇ／Ｌ＋ＫＴ０．１ｍｇ／Ｌ的ＭＳ培养基上就能生     

百合子房的组织培养

以百合子房为材料进行组培快繁，得到子房诱导成愈伤组织的最适培养基为ＭＳ＋ＢＡ１ｍｇ／Ｌ＋ＮＡＡ０．５ｍｇ／Ｌ：适合诱导分化的培养基为ＭＳ＋ＢＡ０．５ｍｇ／Ｌ＋ＩＡＡ０．５ｍｇ／Ｌ；适合生根的培养基为ＭＳ＋ＢＡ０．２ｍｇ／Ｌ＋ＩＡＡ１ｍｇ／Ｌ．     

甜瓜种苗克隆

以古拉巴、蜜翠、伊丽莎白,西莫洛托４个引进杂交种甜瓜和七宝甜瓜,小麦瓜,青皮绿肉、亭林雪瓜本地品种为材料,用其子叶为外植体进行培养,获得无性繁殖系,结果表明,杂交种的芽诱导率高于本地品种;在１４种激素配比组合中ＭＳ＋６－ＢＡ０．５ｍｇ／Ｌ＋ＩＡＡ０．０５ｍｇ／Ｌ培养基丛生芽诱导率最高,达７２％－７６％;ＭＳ＋６－ＢＡ０．２ｍｇ／Ｌ＋ＩＡＡ０．０５ｍｇ／Ｌ培养基最利于芽伸长;生根培养基为ＭＳ＋ＩＡＡ０．２ｍｇ／Ｌ＋ｎａａ０．５ｍｇ／Ｌ,平均每粒种子可获得的８棵再生植株。     

雪兔子叶的组织培养及植株再生

以雪兔子无菌苗的幼叶为外植体,接种到ＭＳ补加ＮＡＡ（１．０－２．０）ｍｇ／Ｌ、６－ＢＡ（０．１－１．０）ｍｇ／Ｌ的培养基上诱导愈伤组织,其中以ＭＳ＋ＮＡＡ２．０ｍｇ／Ｌ＋６－ＢＡ０．５ｍｇ／Ｌ的诱导效果最好,经６周培养即可形成大量的黄绿色愈伤组织,诱导率可达１００％,经２－３次继代培养后,将生长发良好的愈伤组织转接到ＭＳ附加６－ＢＡ（０．５－２．０）ｍｇ／Ｌ、ＩＡＡ（０．０５－０．１）ｍｇ／Ｌ、Ｎ     

骆驼刺高效离体植株再生体系的建立

通过对络驼刺（Ａｌｈａｇｉ ｐｓｅｕｄａｌｈａｇｉ Ｄｅｓｖ）不同外植体来源、不同培养基及激素配比的比较,建立骆驼刺培养高效再生植株实验体系。表明骆驼刺下胚轴切段在含１．５￣２．０ｍｇ／Ｌ２,４－Ｄ和０．５￣１．０ｍｇ／Ｌ ６－ＢＡ的ＭＳ培养基中１００％诱导愈伤组织,在含１．５ｍｇ／Ｌ ６－ＢＡ和１．０ｍｇ／Ｌ ＮＡＡ的ＭＳ培养基上愈伤组织分化成苗,转至含２．０ｍｇ／Ｌ ＩＢＡ和０．２ｍｇ／Ｌ ＮＡＡ的ＭＳ培养基上成根得到完整再生植株,组织学观察表明植株再生主要为器官发生途径,染色体稳定遗传。     

播娘蒿子叶及下胚轴诱导再生植珠的研究

用播娘蒿种子，在附加６－ＢＡ０．５～１．０ｍｇ／Ｌ＋ＮＡＡ０．１ｍｇ／Ｌ的ＭＳ培养基上获得无菌苗，幼苗的下胚轴在含６－ＢＡ０．１ｍｇ／Ｌ＋ＮＡＡ０．５ｍｇ／Ｌ的ＭＳ培养基上出愈情况最佳，将来自下胚轴的愈伤组织培养于含有６－ＢＡ２．０ｍｇ／Ｌ＋ＮＡＡ０．２ｍｇ／Ｌ的ＭＳ培养基上分化出的丛生芽状态最好，最佳生根培养基为１／２ＭＳ＋ＩＢＡ０．５ｍｇ／Ｌ＋ＮＡＡ０．０５ｍｇ／Ｌ．     

风信子外植体植株再生系统的研究

风信子叶片及鳞片直接诱导下定芽的培养基为ＭＳ附加６－ＢＡ２．５ｍｇ／Ｌ、ＮＡＡ２．０ｍｇ／Ｌ、ＩＡＡ０．５ｍｇ／Ｌ和ＭＳ附加６－ＢＡ２．５ｍｇ／Ｌ、ＮＡＡ２．５ｍｇ／Ｌ。不定芽发育成小鳞茎的培养基为ＭＳ附加ＧＡ０．２ｍｇ／Ｌ、ＩＡＡ０．５ｍｇ／Ｌ。鳞茎移栽成活率为９０％,从而建立了风信子植株再生系统。     

播娘蒿子叶及下胚轴诱导再生植株的研究

用揪娘嵩种子,在附加６－ＢＡ０．５～１．０ｍｇ／Ｌ＋ＮＡＡ０．１ｍｇ／Ｌ的ＭＳ培养基上获得无菌苗,幼苗的下胚轴在含６－ＢＡ０．１ｍｇ／Ｌ＋ＮＡＡ０．５ｍｇ／Ｌ的ＭＳ培养基上的出愈情况最佳,将来自下胚轴的愈伤组织培养了含有６－ＢＡ２．０ｍｇ／Ｌ＋ＮＡＡ０．２ｍｇ／Ｌ的ＭＳ培养基上分化出的丛生芽状态最好,最佳生根培养基为１／２ＭＳ＋ＩＢＡ０．５ｍｇ／Ｌ＋ＮＡＡ０．０５ｍｇ／Ｌ。     

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.     

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     

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

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