不同苦荞品种的产量与品质及其对低氮的响应

试验选用20个苦荞品种为材料,以不施氮为处理,研究苦荞的产量与品质性状及其对低氮的响应。结果发现:对照条件下,20个供试苦荞品种的单株产量在2.35~5.53 g间,产量在0.97~1.85 t/hm~2间,蛋白以谷蛋白(29.65%~40.32%)与清蛋白(17.21%~44.70%)含量较高,醇溶蛋白(8.63%~13.79%)次之,球蛋白含量(2.03%~4.16%)最低,总黄酮含量在0.95%~1.52%间;不施氮处理下,苦荞株高降低、分枝数减少、干物质量下降,其中,16个品种的单株产量呈显著或极显著降低,14个品种的产量呈显著或极显著降低;20个苦荞品种谷蛋白含量呈不同程度下降,而清蛋白、醇溶蛋白和球蛋白含量对低氮的响应并不一致;14个品种的总黄酮含量显著或极显著高于对照。结论:不施氮处理鉴定获得4个耐低氮的高产优质品种,分别为川荞5号、六苦2号、六苦3号和黔苦5号,其单株产量大于3.0 g,产量高于1.2 t/hm~2,可直接用于种植推广或作为苦荞耐低氮种质资源利用。     

2011年石河子垦区棉花新品系品比试验

本文对八师2011年棉花品比试验参试的19个品系和1个对照品种进行了比较分析,通过分析得出如下结论:在早熟性性状上生育期最短的品系是科瑞1639和万605,生育期最长的品系是天昆T19;在丰产性性状上籽棉产量最高的是硕丰9号,其次为下122,分别比早36号(ck)增产11.9%、11%、10.2%;籽棉产量最低的是天昆T19,其次是石H4,分别比早36号(ck)减产24.7%和12.3%;在品质性状上绒长在28～34mm之间,绒长最长的是万605和万416,其次是天昆T19、和信3号;绒长最短的是科瑞1639,其次为中棉283和田苗7-3;各品系衣分在36～42%之间,衣分最高的是万416,其次是石H4和中棉283,衣分最低的是下122,其次是和信8号、垦802。     

蓝莓‘寨选’品系在南京地区的生长与结实表现

【目的】评价蓝莓‘寨选’品系3号、4号、5号、7号、8号、9号在南京地区的生长与结实表现,优选育种材料。【方法】对6个‘寨选’品系5年生植株的生长量、产量、开花结果物候期及果实特点进行观察和统计分析。【结果】6个‘寨选’品系在南京地区适应性极佳,均表现为早熟、丰产,其中4号、7号、3号和9号株产量均超过3.40 kg,果实成熟期在5月底至6月初,浆果硬度在2.00 kg/cm~2左右,果实中多酚和花色苷含量较高;7号品系果实成熟早,风味好,果实花色苷和多酚含量高,鲜果感官评分最高;4号品系生长量大,株产量高,果实硬度最高,多酚和花色苷含量较高,鲜果感官评价较好。【结论】‘寨选’7号和4号品系综合评价结果优秀,可作为蓝莓候选优良新品种。     

蚕豆(Vicia faba)根尖微核试验敏感品种筛选的续报

为了建立监测系统,以便准确地监测环境污染,我们曾以农药水胺硫磷为指示剂,用其不同浓度处理14个蚕豆品种,结果发现不同的蚕豆品种,对农药敏感程度不一,并从中筛选出了敏感品种——松滋青皮豆,我们为使蚕豆根尖微核监测系统完善化,在上述敏感品系筛选工作的基础上,进行了常用农药的扩大试验,结果表明,松滋青皮豆仍为较好的敏感品系,现将试验结果简报如下:     

抗(耐)甜菜丛根病新品系—SN8901的选育

抗(耐)甜菜丛根病新品系—SN8901系从亲本8—67中优选单株,经丛根病圃培育,优选出的抗(耐)病品系.该品系属多粒2倍体自交系.试验、生产示范结果均优于对照新甜4号.根产量、含糖率、产糖量分别比对照新甜4号提高41.56%、2.66度和71.52%.     

2010年八师品比试验棉花品系性状差异及聚类分析

对2010年八师品比试验参试的21个棉花品系和1个对照进行性状差异及聚类分析,性状差异表明,各参试品系生育期分为晚熟和中、早熟材料,株高除田苗1较矮外,其它品系差异不大,产量差异较大,其中有惠远2号和西部9号两个高产品系,其它综合性状也较好,同时也筛选出产量较低的品系,有万氏472、天昆T10、万氏607。聚类分析表明,所选品系被分为了两大类,主要是依据各品系的生长势和产量进行分类,其结果与性状差异和产量分析结果基本一致,说明聚类分析是一种比较直观的分析方法,同时指出如果能结合分子技术,在DNA水平上进行聚类分析,结果可能更准确。     

不同粒色青稞营养品质与抗氧化活性物质差异性分析

彩色青稞作为一种特殊粒色的种质资源,其籽粒颜色的不同决定其品质的不同。为了解彩色(种皮)青稞营养品质(淀粉、膳食纤维、蛋白质)和抗氧化活性物质(总酚、黄酮、维生素E)含量与白色(种皮)青稞的差异,为彩色青稞在营养和保健食品加工中的应用提供数据支撑。淀粉含量参照GB 5009.9—2016测定、膳食纤维含量参照GB 5009.88—2014测定、蛋白质含量参照GB 5009.5—2010测定,总酚参照福林酚比色法、维生素E参照高效液相色谱法,分别对7份白粒、2份紫粒、6份黑粒青稞品种(品系)的基本营养品质指标和重要抗氧化活性物质成分进行了测定。结果表明:(1)不同参试青稞品种(品系)的营养品质存在差异,其中淀粉含量为31.90%~52.70%,膳食纤维含量为10.59%~15.39%,蛋白质含量为11.90%~17.30%,总酚含量为0.23%~0.35%,黄酮含量为0.15%~0.25%,维生素E含量为0.29%~0.85%;(2)不同粒色青稞品种(品系)营养品质存在显著差异,其中彩色品种(品系)的淀粉、膳食纤维和蛋白质平均含量分别比白色青稞品种高2.63%,3.66%,19.85%;抗氧化活性物质(除总酚外)存在显著差异,其中彩色品种(品系)的总酚、黄酮和维生素E含量分别比白色青稞品种高11.54%,7.10%,12.47%。彩色青稞在营养品质和抗氧化活性物质含量方面优于白色青稞,在功能性保健产品开发方面有较高的利用价值。     

镰刀菌毒素滤液对转基因香石竹抗枯萎病性能的测定

培育转基因香石竹是摆脱香石竹枯萎病的主要途径。通过检验转基因香石竹各品系对尖孢镰刀枯萎病的抗病性能,能够为抗枯萎病香石竹品种的选育提供理论依据。研究在探索适合尖孢镰刀菌产毒条件的基础上,用不同浓度镰刀菌毒素滤液对转基因香石竹28个品系进行了抗枯萎病性能的测定。测定结果表明:当温度为25~30℃、培养时间为15 d时,香石竹枯萎病菌在PSC培养液、全天振荡培养、连续黑暗的条件下最利于尖孢镰刀菌的产毒。不同p H对尖孢镰刀菌产毒量影响不大,毒素滤液经高温灭菌后其毒性变化也不大,说明该毒素具有较强的热稳定性。毒素培养滤液能够使香石竹叶片发病,且浓度越高,叶片发病率越高。当50%浓度毒素处理各转基因香石竹与其相应的未转基因香石竹叶片10 d时,叶片发病率差异达到了显著性差异的水平。通过50%毒素对香石竹各品系进行测定,发现转基因Ciao Bianco的叶片发病率在23.1%~27.1%之间,普通Ciao Bianco叶片发病率在53.8%~85.7%之间;转基因Tuareg的叶片发病率在25%~53.8%之间,普通Tuareg的叶片发病率在58.3%~78.6%之间;转基因Asso的叶片发病率在13.3%~43.8%之间,普通Asso叶片发病率在53.8%~66.7%之间。同时,确定Tuareg131、Tuareg133、Ciao Bianco179、Ciao Bianco416、Asso44、Asso 87、Asso 101、Asso 244为抗病品系。枯萎病镰刀菌毒素能够在香石竹抗枯萎病性测定起到重要作用,50%毒素浓度可用于筛选抗枯萎病的优良转基因香石竹,为转基因抗性品系选育和转基因香石竹抗病品系的推广种植提供依据。     

干旱胁迫对苦荞麦农艺性状、产量和品质的影响

以2个苦荞品种(晋荞2号和川荞1号)为材料,研究了干旱胁迫对苦荞麦农艺性状、产量和品质的影响.结果表明:晋荞2号在轻度胁迫处理下株高、主根长、根体积、侧根数分别为56.4cm,12.41cm,3.76cm3和13.0个,较正常灌水和重度胁迫处理分别增加13.4%~42.8%,22.3%~73.4%,16.4%~50.5%和33.1%~77.6%.川荞1号在轻度胁迫处理下株高、主根长、根体积和侧根数分别为35.1cm,16.3cm,3.66cm3和6.0个.较正常灌水和重度胁迫处理分别增加9.4%~33.3%,40.4%~50.0%;23.2%~46.5%,34.5%~69.7%.胁迫可增加苦荞的单株粒质量,两个品种均在轻度胁迫处理单株粒质量最高,分别为2.3g和2.3g.芦丁质量分数以叶片质量分数最高,但各胁迫处理间差异无统计学意义.黄酮质量分数以轻度胁迫处理最高,两个品种均以胁迫处理显著高于正常灌水处理,晋荞2号各器官间黄酮和芦丁质量分数均明显高于川荞1号.     

黄土高原丘陵沟壑区(定西)抗病苜蓿品种比较试验

对3个主抗霜霉病的苜蓿新品系在黄土高原丘陵沟壑区—定西安定区进行了生物学性状及植物学性状的试验研究。结果表明,3个苜蓿新品系对定西地区的气候和土壤都具有较强的适应性,霜霉病的发病率为0,白粉病发病率仅为7.55%,分别比陇中苜蓿和阿尔刚金苜蓿低72%和84%。2号、3号和4号品系(第二年)的鲜草产量分别达56.73 t/hm2嫡6、3.8 t/hm2嫡和58.6 t/hm2嫡,3个品系的平均产草量较陇中苜蓿和阿尔冈金产草量分别提高30.5%(P<0.01)和17.5%(P<0.05)。抗病苜蓿将成为黄土高原丘陵沟壑区适宜推广种植的几个品种之一。     

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     

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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Brief Introduction to “Journal of Jilin University( Science Edition) ”

<正>"Journal of Jilin University(Science Edition)"is a comprehensive academic journal in the fields of science sponsored by Jilin University and administrated by the Ministry of Education of the Peoples Republic of China.The journal started publication in 1955.The original name at starting publication was"Journal of Natural Science of Northeast People University",which was changed into"Acta Scientiarum Naturalium Universitatis Jilinensis"in 1958 owing to the name change of the university.The present journal name has