黄芩愈伤组织与丛芽诱导

为寻求黄芩愈伤组织、丛芽诱导的最佳条件,分别以茎尖、茎段、叶片、带节茎段等为实验材料比较不同诱导条件对诱导率的影响;比较培养过程中愈伤组织的增重量及生长状态.结果表明,诱导率:带节茎段要高于其它外植体;MS+6-BA0.5 mg/L +NAA0.5 mg/L为愈伤组织诱导率最高、愈伤组织增殖最大的培养基组合;MS+6-BA1.0 mg/L +NAA0.5 mg/L为不定芽诱导最合适培养基.     

叶用莴苣组织培养研究

以叶用莴苣(LactucasativaL)栽培品种的幼嫩叶片为实验材料,对叶用莴苣的组织培养进行了研究,探讨愈伤组织的形成、愈伤组织分化成芽和生根的条件.结果如下6BA和NAA的浓度影响叶用莴苣愈伤组织的形成、分化和生根培养,诱导愈伤组织的最适培养基为MS+6BA(0.5mg/L)+NAA(0.1mg/L),最适分化培养基为MS+6BA(0.5mg/L)+NAA(1.0mg/L),最适生根培养基为1/2MS+NAA(0.1mg/L).     

食荚型豌豆组织培养和植株再生研究

以豌豆子叶、茎、真叶为材料进行外植体筛选及组织培养研究,试验结果表明:豌豆带节茎段是最佳试验材料;在MS附加1 mg/L BA和1 mg/L NAA培养基中,愈伤组织诱导率达100%,愈伤组织在分化培养基中未分化出芽;带节茎段在MS附加2～3 mg/L BA和0.1 mg/L NAA培养基中,腋芽和丛生芽产生率达100%,芽增殖系数3以上;不定芽在MS附加3 mg/L NAA上生根率86%;试管苗移栽成活率85%左右.     

烟草的组织培养技术研究

以烟草（Nicotiana tabacum L.）幼嫩叶片、茎段和带有叶片的茎段为外植体,对其进行组织培养研究.结果表明：烟草组织在MS＋0.1mg·L^-16-BA＋0.5mg·L^-1NAA的培养基中能诱导形成不定芽和根;在MS＋0.5mg·L^-16-BA＋0.1mg·L^-1NAA的培养基和MS＋0.5 mg·L^-16-BA＋0.5 mg·L^-1NAA的培养基中能脱分化形成愈伤组织,但只能诱导形成不定芽;带有叶片的茎段最容易诱导形成愈伤组织.     

黄毛草莓愈伤组织诱导条件优化

本研究分别以黄毛草莓叶片和茎尖生长点为外植体进行愈伤组织的诱导,并通过比较茎尖愈伤组织在不同培养基以及不同植物激素组合下的生长情况,为建立黄毛草莓高效快速的繁殖体系,筛选愈伤组织诱导的最适培养基奠定基础.结果表明,与1/2MS培养基相比,MS培养基作为基础培养基(0.4 mg/L TDZ+0.2 mg/L 6-BA条件下)诱导的愈伤组织效果最佳;以MS为基本培养基,通过4因素3水平L9(34)正交实验研究不同浓度组合的4种植物激素对黄毛草莓愈伤组织诱导率的影响.结果表明2,4-D对黄毛草莓叶片愈伤组织的诱导影响最大.黄毛草莓叶片愈伤组织诱导的最优培养基为MS+0.4 mg/L TDZ+0.2 mg/L 6-BA+0.15 mg/L 2,4-D+0.2 mg/L NAA;NAA对黄毛草莓茎尖愈伤组织的诱导影响最大,黄毛草莓茎尖愈伤组织诱导的最优培养基为MS+0.2 mg/L TDZ+0.6 mg/L 6-BA+0.15 mg/L 2,4-D+0.6 mg/L NAA.     

珍奇园艺植物珠帘藤的组织培养

以珠帘藤带芽节段和叶片为外植体进行组织培养.结果表明,以节段外植体诱导丛芽的适宜培养基为MS+2 mg/L BA,以叶片外植体诱导不定芽的适宜培养基为MS+1 mg/L BA+0.1 mg/L NAA;茎段外植体成芽时间较短,数量较多;最佳不定芽增殖培养基为MS+1.5 mg/L KT,繁殖系数达5.5,苗壮、长势好;最佳不定芽生根培养基为1/2 MS+0.1 mg/L iBA+0.6 g/L AC,生根率达96%.平均生根7.5条,根粗壮;最适试管苗移栽基质为腐质土+珍珠岩+椰糠(1:1:1),移栽成活率达92%.     

小叶锦鸡儿的组织培养

小叶锦鸡儿是一种抗旱性强的落叶灌木,在防风固沙和水土保持方面功能显著。为了探索其组培扩繁的可行性,以茎段和无菌苗为外植体对小叶锦鸡儿进行了离体培养的初步研究。结果表明:相比于二年生木质化茎段,当年生未木质化的带节茎段具有更强的腋芽发生能力,在MS+0.5mg/L 6-BA+0.01mg/L IAA培养基上腋芽诱导率可以达到31.54%;无菌苗的子叶、真叶、茎段和下胚轴均有强的愈伤组织发生能力,在MS+2.0mg/L NAA+0.5mg/L 6-BA培养基上愈伤组织诱导率均达到或接近100%,适合愈伤组织分化的培养基组合为MS+2.0mg/L NAA+0.5mg/L 6-BA;无菌苗的带节茎段通过腋芽发生途径可以实现植株再生,芽丛诱导适合的培养基组合为MS+2.0mg/L NAA+0.5mg/L 6-BA,在1/8MS+0.5mg/L NAA+0.5mg/L IBA培养基上诱导了不定根的发生。     

广西莪术和蓬莪术的离体快繁技术研究

本试验以广西莪术和蓬莪术的幼芽、嫩叶、块茎和根为外植体,接种在以MS为基本培养基、外加不同激素浓度组合的培养基上进行愈伤组织诱导、幼芽增殖、生根等培养.实验表明:诱导莪术叶、块茎和根的愈伤组织形成的最适培养基为MS+2,4-D 1.0×10-3 g/L+6BA 0.5~1.0 mg/L(+NAA 0.3 mg/L),其中莪术叶诱导率最高达96%;幼芽最适增殖培养基为MS+6-BA 3. mg/L+NAA 0.1 mg/L+KT 1.0 mg/L,其增殖倍数达3.5以上;而生根培养基以1/2MS+NAA 1.0 mg/L+BA .5 mg/L为最佳,生根率达100%,其移栽成活率达85%以上.     

南川百合组织培养与快繁技术体系研究

为加快南川百合的繁殖速度,对南川百合进行离体组织培养研究,结果表明:南川百合外植体的诱导率从大到小依次为:鳞片,花丝,子房,茎段,叶片.用鳞片作为外植体时,下部的诱导率最高,中部次之,上部最差.鳞片诱导丛生苗的最佳培养基为MS+6-BA 1.5mg/L+NAA 0.5mg/L;用花丝和子房作为外植体时,诱导丛生苗的最佳培养基为MS+6-BA 0.5mg/L+NAA 0.5mg/L;用再生苗的叶片作为外植体时,诱导丛生苗的最佳培养基为MS+6-BA 1.0mg/L+NAA 0.5mg/L;用再生苗的茎段作为外植体时,诱导丛生苗的最佳培养基为MS+6-BA 1.5mg/L+NAA 1.0mg/L.用于不定芽增殖的最佳培养基为MS+6-BA 1.0mg/L+NAA0.05mg/L.无根苗生根的最佳培养基为1/2MS+NAA 0.5mg/L,生根率可达到86.7%,移栽后成活率很高.     

蒙古黄芪的组织培养研究

对蒙古黄芪无菌苗的不同外植体(叶片、子叶、下胚轴)进行组织培养研究.结果表明:该三种外植体分别在MS BA2.0mg/L NAA2.0mg/L、LS BA2.0mg/L NAA0.1mg/L、MS BA2.0mg/L NAA2.0mg/L 培养基上的愈伤组织诱导率很高;在这三种外植体中,子叶和下胚轴所诱导的愈伤组织在继代培养基上能分化出芽;试管苗在1/2MS NAA5.0mg/L培养基上生根效果好.     

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.     

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.     

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.     

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.     

Jane Eyre——A Feminist In The 19th Century

In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.     

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

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