甘蔗组织培养中培养基的优化

比较了不同基本培养基 ,不同激素及其不同质量浓度的组合对甘蔗愈伤组织的诱导 ,不定芽的分化及其生根的效果 .结果表明 :MS + 2 ,4 -D 1～ 5mg·L-1培养基均可诱导愈伤组织的增殖 ;MS +KT 1.5～ 2 .0mg·L-1+ 6 -BA 2mg·L-1培养基对愈伤组织分化不定芽的效果最佳 ;1 2MS +NAA 1～ 4mg·L-1培养基对生根较好 .     

番茄高效再生体系的建立

比较了不同基本培养基,不同激素及其不同浓度组合对番茄愈伤组织的增殖、不定芽分化及其生根的效果.结果表明:MS+NAA0.02～0.10mg·L-1+6-BA3.0mg·L-1+蔗糖30g·L-1(pH=5.8)均可诱导愈伤组织的增殖,但以MS+6-BA3.0mg·L-1+NAA0.05mg·L-1+蔗糖30g·L-1最佳;MS+IAA0.1mg·L-1+6-BA2.0mg·L-1+蔗糖30g·L-1培养基对愈伤组织分化不定芽的效果最佳;MS+IAA0.1mg·L-1+蔗糖20g·L-1培养基对生根较好.     

益母草愈伤组织分化及无性系建立的研究

以益母草根颈为材料,进行了愈伤组织诱导、增殖与分化,分化芽生根,试管苗移栽、定植的研究.结果表明：MS＋6-BA 0.5mg·L-1＋NAA 0.6mg·L-1＋2,4-D1.2mg·L-1是愈伤组织诱导培养的理想培养基;MS＋6-BA0.5mg·L-1＋NAA0.1mg·L-1＋2,4-D 1.5mg·L-1是愈伤组织继代增殖培养的理想培养基;1/2MS＋6-BA 0.2mg·L-1＋NAA 0.1mg·L-1是愈伤组织分化培养和分化芽继代分化增殖培养的理想培养基;N6＋IAA0.2mg·L-1培养基是益母草分化芽生根培养的理想培养基.移栽成活率为94.4%;定植成活率为99.1%;定植成活的试管苗保持野生益母草的所有植物学性状.     

金钱树组培快繁技术研究

以金钱树叶片为外植体进行离体培养研究,结果表明:用ρ=0.1 g.L-1的升汞溶液对金钱树叶片消毒12 m in,效果较佳;在外植体愈伤组织诱导中,成熟叶较嫩叶易产生愈伤组织;1 200 lx的光强有利于愈伤组织的形成;2,4-D1.0 mg.L-1 6-BA2.0 mg.L-1的激素配比对诱导叶片愈伤组织的形成有利,诱导率高达92.0%;在所试的3种基本培养基中,H基本培养基较适宜愈伤组织的分化;6-BA8.0 mg.L-1对愈伤组织分化不定芽的效果较好,不定芽在1/2MS NAA1.0 mg.L-1的生根培养基上,生根率高达100%,根多,且壮,植株长势好;试管苗移栽在河沙及表土混成(V河沙∶V表土=1∶1)的基质中,其成活率较高,可达86.2%.     

中国水仙愈伤组织诱导及植株再生研究

以中国水仙鳞茎为试材,进行中国水仙愈伤组织诱导及其分化的研究.结果表明:1)2%次氯酸钠20 min较适合水仙花花苞的消毒处理,水仙鳞茎的消毒处理以0. 1%升汞12 min灭菌效果较好,以内层鳞片存活率最高,外层鳞片次之;2)在MS+6-BA2. 0 mg·L-1+2,4-D 0. 5 mg·L-1为愈伤诱导及继代的培养基上,子房壁愈伤诱导率最高,为77. 8%,但继代未见再分化,外层鳞片愈伤诱导率次之,外层鳞片与带鳞片的鳞茎盘诱导的愈伤均能继代发育成小鳞茎;3)以培养基MS+6-BA 2. 0 mg·L-1+NAA 0. 5 mg·L-1较适合外层鳞片愈伤组织的再分化,鳞茎分化率达64. 4%;4)在培养基1/2 MS+IBA1. 0 mg·L-1上,水仙鳞茎苗生根效果较好,生根率达86. 7%,移栽成活率高.     

观赏凤梨组织培养不同外植体的比较试验

选用观赏凤梨不同品种的老叶鞘、嫩叶鞘、顶芽、侧芽、茎段、叶片等不同组织作外植体 ,接种在诱导培养基为改良 MS+ 2 .0 mg· L- 1的 BA+ 5 .0 mg· L- 1的 2 ,4- D+ 0 .2 mg· L- 1的 IBA,及分化培养基为改良 MS+ 4 .0 mg· L- 1的 BA+ 0 .2 mg·L- 1的 IBA,培养 60 d进行统计 ,老叶鞘的愈伤组织三个品种平均诱导率为 74.6% ,丛生芽的诱导率平均数达 1 7.1 % ,次之是侧芽、顶芽 ,嫩叶鞘、茎段、叶片 ,后者能诱导出愈伤组织 ,不能诱导出丛生芽     

植物激素对一品红愈伤组织和胚状体的作用

以一品红幼茎为外植体,接种在培养基(MS+ZT)0.5mg·L-1、NAA0.5mg·L-1、IBA0.5mg·L-1、2,4 D1.0mg·L-1、6 BA1.0mg·L-1诱导愈伤组织,其中以NAA0.5mg·L-1时愈伤组织诱导率最高,为96.4%.将继代培养的愈伤组织,接种到(MS+ZT)1.0mg·L-1+NAA0～2.0mg·L-1、IBA0～2.0mg·L-1、2,4 D0～2.0mg·L-1;(MS+6 BA)1.0mg·L-1+NAA0～2.0mg·L-1、2,4 D0 2.0mg·L-1培养基上,进行胚状体的分化培养,其中以ZT1.0mg·L-1+2,4 D0.5mg·L-1效果最好.     

圆叶椒草叶片组织培养研究

以圆叶椒草的叶片为外植体,研究不同激素浓度组合对圆叶椒草愈伤组织的诱导、不定芽分化、丛生芽生长及生根的影响.实验结果表明,愈伤组织诱导和芽分化的最适培养基为MS+6-BA 2.0mg·L-1+NAA 0.2mg·L-1,丛生芽生长的最适培养基为MS+6-BA 2.5mg·L-1+NAA 0.25mg·L-1;生根的最适培养基为MS+NAA 0.1mg·L-1,试管苗移栽后成活率为100%.     

辣椒离体高效再生体系及其卡那霉素筛选体系的建立

选用辣椒(CapsicumannuumL.)4个品种的子叶以及下胚轴为外植体进行不定芽的诱导分化、生长及生根成苗试验.在组织培养的各个阶段的培养基中,附加不同种类及不同质量浓度的激素组合,观察测量外植体在各种培养基中的生长情况,从中筛选出最优的激素配比培养基,从而建立了辣椒的高效离体植株再生体系.在此基础上,将不同质量浓度梯度的卡那霉素(Kan)分别加入子叶、下胚轴愈伤组织诱导及不定芽分化阶段的培养基中,观测Kan对外植体生长的影响,以确定各阶段的最低致死质量浓度,用于辣椒的遗传转化研究.试验结果表明最佳的辣椒离体再生培养基为:芽分化阶段,MS+6-BA3.0mg·L-1+IAA0.1mg·L-1;不定芽伸长阶段,MS+GA32mg·L-1+6-BA0.5mg·L-1;诱导生根,MS+IAA1.0mg·L-1.合适的Kan质量浓度为:下胚轴出愈为80mg·L-1;子叶分化出不定芽为60mg·L-1.     

黑果枸杞的组织培养和快速繁殖

本研究以黑果枸杞(Lycium ruthenicum)为对象,对其愈伤组织诱导、不定芽分化、诱导生根的培养条件进行筛选,并探究了黑果枸杞实验室试管苗的大田移栽.结果表明,诱导愈伤组织最适培养基为:MS+0.5mg·L-1 6-BA+0.1mg·L-1 2,4-D+10g·L-1蔗糖,出愈率达88%,愈伤组织生长状态良好;不定芽分化增殖的最适培养基为:MS+0.2mg·L-1 6-BA+10g·L-1蔗糖,不定芽增殖倍数达5.05倍;诱导生根最适培养基为:MS+0.1mg·L-1 IBA+5g·L-1蔗糖,生根率为95%.逐级炼苗后的试管苗大田移栽成活率达90%.     

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.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

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.     

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with