海滨锦葵数量性状的相关和主成分分析

对海滨锦葵的9个数量性状(产量、株高、地径、分枝数、百粒重、种子数、发芽率、蛋白质和粗脂肪)进行了变异程度、相关性和主成分分析。结果表明：(1)海滨锦葵自然生长群体急需改良，单系产量问存在极显著差异(变异系数为98．44％)；(2)产量与地径和分枝数间有十分显著的正相关(r=0．788和0．709)，粗脂肪、株高与产量间有显著的相关性(r=0．380和0．279)；蛋白质、粗脂肪与地径间有显著的相关性(r=308和0．342)；(3)9个数量性状可归纳为4个主成分(产量因子、株高因子、百粒重因子和品质因子)，累积贡献率为77．176％，依据各主成分贡献率的大小，以主成分为单位选育优质高产的海滨锦葵单系则可先选择大地径、多分枝的组合，结合选择多种子的后代材料，最后选育品质较好的优良单系。     

海滨锦葵的耐冷性及低温弱光对其光系统的伤害

以海滨锦葵为实验材料,研究不同低温处理对海滨锦葵光合作用的伤害,探求海滨锦葵对低温胁迫的敏感温度,以及低温弱光对海滨锦葵的伤害．结果表明：在低温胁迫下,海滨锦葵的净光合速率（Pn）、光系统II实际光化学效率（ФPSII）、最大光化学效率（Fv／Fm）显著下降,说明随着温度的降低,海滨锦葵光化学活性受到抑制,13℃是其低温胁迫下的临界温度．低温弱光（6℃、200μmol·m^-2s^-1）处理4h后Fv/Fm下降了2．5％,而光系统I活性（△I／I0）下降了18．5％,说明在低温弱光条件下,海滨锦葵光系统I受到的伤害高于光系统II;在恢复过程中,光系统II在8h基本完全恢复,而光系统I和净光合速率在48h后仍没有恢复到正常水平,说明PSI的恢复速率成了光合作用的主要限制因素．     

耐盐能源植物海滨锦葵(Kostelezkya virginica)再生体系的建立

对海滨锦葵组织培养再生体系进行了研究，结果表明：1．海滨锦葵茎段外植体较好的愈伤组织诱导培养基组合为MS＋KT1．5mg／L＋IAA2．0mg／L或MS＋6-BA4．0mg／L＋IBA0．2mg／L＋Inositol50mg／L．2．海滨锦葵愈伤诱导不定芽的较好培养基组合为MS＋NAA2．0mg／L＋2iP5．0mg／L和MS＋NAA0．5mg／L＋2iP5．0mg／L．3．海滨锦葵腋芽分化不定芽的较好培养基组合为改良MS（含2倍有机营养）＋KT0．4mg／L＋IAA1．0mg／L．MS基本培养基中适当提高有机营养的含量对腋芽的增殖有促进作用，实验中以有机营养的含量为基本培养基2倍时效果较好．4．不定芽在1／ZMS的培养基中附加IBA1．0mg／L牛根最好．     

海滨锦葵茎尖组织培养再生体系的优化

以茎尖为外植体,对海滨锦葵（Kosteletzkya virginica）再生体系的优化进行了研究,结果表明：茎尖萌发的最适培养基为MS＋IAA0．3mg·L^-1＋ZT0．3mg·L^-1,萌发率为91．11％;继代增殖最适培养基为MS＋IAA0．1mg·L^-1＋KT0．5mg·L^-1,增殖系数为4．67;生根培养基为MS（蔗糖3％、琼脂0．6％、pH值5．8）,生根率为90％。炼苗移栽后,成活率可达60％。     

海滨锦葵光合作用对盐胁迫的响应

分别用含有0、100、200和300mmol／LNaCl的Hoagland培养液处理海滨锦葵（Kosteletzkya virginica L.Presl），在处理的第0、1、3、5、7、9、11天分别测定其光合作用参数，同时对海滨锦葵的CO2补偿点进行测定．结果发现，盐处理下海滨锦蓥叶片的光合速率在处理的初期均下降，而且盐浓度越高下降越明显，当其下降至最低点后又会有一定程度的回升。而后随着处理时间的延长，又会出现持续的下降，处理盐度越高光合速率下降得越明显．在处理的初期使光合降低的主要因素是气孔限制因素，在后期非气孔限制因素逐渐开始起作用；实验同时发现盐处理能明显提高海滨锦葵的CO2补偿点，且盐度越高上升的幅度越大．     

海滨锦葵优良单系杂交F2代产量性状的广义遗传力及其主成分分析

以海滨锦葵优良单系杂交的F2代群体为材料,对产量性状进行了广义遗传力、相关性和主成分分析,以期为提高海滨锦葵产量提供有益信息.结果表明:F2家系单株种子产量平均值为12.84 g,比2001年在滩涂海滨锦葵自然生长群体中随机选择的80个单系的平均单株产量(4.25 g/单系)有显著提高;在10个产量性状中,广义遗传力较高的依次是结果枝比、种子成熟度、结果枝数、分枝数和果实数;6个因子(果实数、地径、结果枝数、株高、分枝数和结果枝比)与单株产量高度正相关,且这6个因子彼此高度相关;结果枝高度与上述6个因子及产量均呈显著负相关.主成分分析表明,影响单株产量的依次是结果枝数、地径、分枝数、株高和果实数.对海滨锦葵而言,地径和分枝数的增加是获得高产的关键,而结果枝高度的负选择也可显著提高种子产量.     

Na2S对NaCl胁迫下海滨锦葵光合作用的效应

选用海滨锦葵幼苗为实验材料,在不同NaCl浓度下,对其叶面喷施Na2S处理,14天后,测定海滨锦葵叶片的净光合速率(Pn)、气孔导度(Gs)、胞间CO2浓度(Ci)、光呼吸速率(Pr)、PSⅡ最大光化学量子产量(Fv/Fm)、实际光化学效率(φPSII)、叶绿素含量及叶片膜透性.结果发现增强盐胁迫下海滨锦葵的光呼吸,可以减缓叶绿素的降解,保护光合器官,显著降低膜透性,说明光呼吸对盐胁迫下海滨锦葵有重要的保护作用.     

海滨锦葵油生物柴油的制备及性能分析

以海滨锦葵油为原料,对海滨锦葵油合成生物柴油工艺进行了研究;利用气相色谱及化学分析法,得出了较理想的合成工艺条件;通过材料成本核算,探讨了海滨锦葵油合成路线的经济可行性,并对海滨锦葵油生物柴油的燃烧性进行了分析。结果表明,采用生物柴油与化工产品综合生产线,所得生物柴油十六烷值达560,硫的质量分数为0.0038%,主要技术指标达到甚至超过GB/T 20828-2007标准要求。     

水分和盐分胁迫对海滨锦葵生长的效应

分别用含有0、100、200mmol/LNaCl和等渗PEG的Hoagland培养液处理海滨锦葵幼苗,10天后测定植株的生长、水分状况、Na、K离子含量、渗透调节能力及光合特性的变化.结果发现:NaCl和等渗PEG均引起生长的下降,但等渗PEG对海滨锦葵的影响比NaCl的影响大,说明海滨锦葵对盐胁迫的适应能力较强,而对渗透胁迫的适应能力较差.     

不同盐渍条件下海滨锦葵光合-光响应模型

采用CIRAS-3便携式光合作用测定仪测定了不同盐渍条件下海滨锦葵在不同光强下的净光合速率。通过非直角双曲线模型、直角双曲线模型、指数模型和直角双曲线修正模型对光合参数和拟合曲线进行比较,探讨盐胁迫下海滨锦葵的光响应过程。结果表明,随着盐浓度的升高,海滨锦葵的净光合速率表现出先增高后降低的趋势。另外,从相对误差和决定系数来看,除了指数模型,其他3个模型在不同盐胁迫的海滨锦葵中均适用;发现随着盐浓度的升高,表观量子效率明显降低。对照条件下直角双曲线模型的拟合度最高,100 mmol·L^-1和300 mmol·L^-1 NaCl处理条件下直角双曲线修正模型为海滨锦葵的最适模型,200 mmol·L^-1 NaCl处理条件下非直角双曲线模型的拟合度最高。     

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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