白网纹草组织培养快繁研究

以白网纹草的带芽茎段为外植体，将其接种在附加不同浓度激素的MS培养基上。试验结果表明：最佳启动培养基为MS＋6-BA0．5mg／L＋IBA0．2mg／L，最佳增值培养基为MS＋6-BA0．2mg／L＋IBA0．1mg／L，生根的适宜培养基为1／2MS＋NAA0．2mg／L，同时还发现将生根培养基中的蔗糖换成白砂糖，对生根效果影响不大。     

矮晚柚腋芽丛生离体繁殖体系的建立

利用组织培养方法建立植物快速繁殖体系能很好地保存种质资源。该研究以矮晚柚无菌苗茎尖及子叶节为试验材料,采用正交设计L9,研究基本培养基、激素配比对腋芽萌发、芽增殖及壮苗的影响。结果表明：最适材料为无茵苗子叶节,最佳腋芽诱导方案为I／2MS＋6-BA0．5mg／L＋NAA0．05mg/L＋GA31．0mg／L,丛生单芽在增值培养基1／2MS＋6-BA0．5mg／L＋NAA0．05mg／L的平均增殖系数达到5．8,最佳壮苗培养基为1／2MS＋6-BAO．5mg／L＋NAA0．1mg／L。     

迷你型黄瓜的快繁技术研究

为了降低迷你型黄瓜的种苗成本,对迷你型黄瓜的不定芽的快繁技术进行了研究．以MS为基本培养基,研究了不同的激素处理对迷你型黄瓜离体子叶不定芽的诱导、增殖与生根的影响．结果表明：以MS＋0．3mg／L6-BA＋0．05mg／LIAA为培养基诱导不定芽的效果较好,以MS＋0．2mg／L6-BA＋0．05mg／LIAA为培养基的增殖效果较理想,以1／2MS＋0．2mg／LIAA为培养基的生根效果较好,生根率达98％,且根系发达．     

用百合叶片及其鳞茎叶片离体诱导不定芽

以MS为基本培养基，附加不同浓度配比的NAA、6-BA、TDZ、2．4-D等激素，分别对5种百合的鳞片叶和叶片进行培养．结果显示，叶片经MS TDZ0．5mg／L和MS 2．4-D0．2mg／L TDZ2．0mg／L诱导可产生不定芽，诱导率最高为20％．MS NAA0．03mg／L、MS NAA0．05mg／L和MS 6-BA2．0mg／L 2．4-D0．2mg／L的培养基都不同程度诱导鳞片叶产生多个不定芽。以MS NAA0．05mg／L芽诱导率最高，不定芽经过继代培养，可长出新鳞茎．     

玫瑰组织培养研究

以玫瑰茎尖为外植体进行组织培养试验研究结果表明：玫瑰茎尖在MS＋6BA1mg／L＋NAA0．1mg／L＋3％白糖＋0．4％琼脂的培养基中芽的诱导率高达98％；在MS＋6-BA2mg／L＋NAA0．01mg／L＋3％白糖＋0．4％琼脂的培养基中增殖倍数可达6，且苗壮；在1／2MS＋IBA0．5mg／L＋0．3％活性炭＋3％白糖＋0．4％琼脂培养基中根系生长丰富且健壮，诱根率高达100％；试管苗移栽基质为珍珠石＋腐殖土，成活率达98%．     

牡丹花石榴的组织培养技术研究

以牡丹花石榴树春季新抽生的未木质化的嫩枝条芽段为试验材料，研究了牡丹花石榴的组织培养技术。6-BA的浓度是决定牡丹花石榴腋芽能否萌发的关键因素，适宜牡丹花石榴腋芽萌发与继代繁殖的培养基为“MS＋6-BA1．0mg／L＋IBA0．2mg／L”。适合牡丹花石榴芽丛壮苗培养基为“MS＋KT0．5mg／L＋IBA0．2mg／L”。适合牡丹花石榴嫩茎生根的培养基为“1／2MS＋IBA0．5mg／L”。     

牡丹鳞芽离体培养的初步研究

以“银粉金鳞”鳞芽为材料进行离体培养,研究了植物生长调节剂6-BA和NAA对鳞芽不定芽诱导分化、增殖培养的影响．结果表明：MS＋Ca^2＋ ＋6-BA1．0mg／L＋NAA0．3mg／L为丛生芽诱导最佳培养基,诱导率高达81．67％;MS＋Ca^2＋ ＋6-BA1．6mg／L＋NAA0．2mg／L为最佳增殖培养基．增殖系数为3．21．     

华芦荟的组织培养与快速繁殖

以华芦荟（Aloe chirtensis（Haw．）Baker）的茎切段为材料，接种于加不同植物激素组合的MS培养基上，获得大量的再生植株。实验结果表明，诱导芽的生成，使用MS＋6-BA3mg／L＋NAA0．1mg／L培养基为最佳，快速繁殖阶段使用MS＋6-BAlmg／L＋NAA0．2mg／L培养基为最佳，诱导生根阶段使用1／2MS＋IBA2．0mg／L培养基为最佳，16～28d内可以长出2～6每根。     

菊花花瓣的组培快繁技术研究

以菊花的花瓣作外植体进行组培快繁技术研究，结果表明：外植体用0．1％升汞消毒10min为宜；诱导愈伤组织的最佳培养基为MS＋6-BA1．5mg／L＋NAA0．1mg／L；丛生芽形成的最佳培养基为MS＋6-BAl．5mg／L＋NAA0．1mg／L；用1／2MS＋NAA0．5mg／L作生根培养基，生根率可达100％。     

玫瑰组织培养研究

以玫瑰茎尖为外植体进行组织培养试验研究结果表明：玫瑰茎尖在MS＋6BA1mg／L＋NAA0．1mg／L＋3％白糖＋0．4％琼脂的培养基中芽的诱导率高达98％;在MS＋6-BA2mg／L＋NAA0．01mg／L＋3％白糖＋0．4％琼脂的培养基中增殖倍数可达6,且苗壮;在1／2MS＋IBA0．5mg／L＋0．3％活性炭＋3％白糖＋0．4％琼脂培养基中根系生长丰富且健壮,诱根率高达100％;试管苗移栽基质为珍珠石＋腐殖土,成活率达98%．     

Western and Eastern culture differences in commercial field

The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity.     

风的曲线

Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose.     

团图为数的图中的闭团贯数

Given a graph G,a subgraph C is called a clique of G if C is a complete subgraph of G maximal under inclusion and |C|≥2. A clique-transversal set S of G is a set of vertices of G such that S meets all cliques of G. The clique-transversal number, denoted as TC (G), is the minimum cardinality of a clique-transversal set in G. The clique-graph of G, denoted as K (G), is the graph obtained by taking the cliques of G as vertices, and two vertices are adjacent if and only if the corresponding cliques in G have nonempty intersection. Let F be a class of graphs G such that F={G|K(G) is a tree}. In this paper the graphs in F having independent clique-transversal sets are shown and thus TC (G)/|G|≤1/2 for all G ∈ F.     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

Social and Cultural Influence on Word Meaning

Different nations have different social cultures, and the social culture of every nation is developing with the development of the nation, language is greatly influenced by social culture, which enables language to possess national and historical characteristics. Word is the smallest, independent, meaningful linguistic unit of language. It can well reflect the national and historical characteristics. From synchronic aspect, the social and cultural influence on word meaning is mainly embodied in conceptual and associative meanings of word. The incorrespondence of word meaning is a phenomenon that exists in both conceptual and associative meanings of word among different languages. From diachronic aspect, the development of social culture causes some changes of word meaning to some extent. Therefore, social culture plays a key role in vocabulary learning and mastery of a language.     

汉字倒说

汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.