共查询到20条相似文献，搜索用时 93 毫秒
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以大岩桐幼嫩叶片为外殖体,通过0.1%氯化汞消毒后进行组织培养,适宜条件为:(1)诱导培养基为MS+BA2.0mg.L-1(以下单位同)+NAA0.2;(2)继代培养基为MS+BA1.0+NAA0.5;(3)生根培养基1/2MS+IBA1.0+活性炭1.0g.L-1。大岩桐在适合的条件下移栽生长良好,具有很高的经济效益。 相似文献
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"幸香"草莓组培快繁技术研究 总被引：2，自引：0，他引：2
以幸香草莓为试材,对草莓葡匐茎茎尖生长点进行组织培养,筛选出适宜幸香草莓诱导分化培养基为MS BA0.50mg/L NAA0.10mg/L、继代增殖培养基为MS IBA0.10 mg/L BA0.50 mg/L、生根培养基为1/2MS IBA0.04 mg/L 糖15g/L. 相似文献
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为研究祁术的组织培养及快速繁殖技术,选用祁术的叶片和下胚轴为外植体材料,接种于附加植物生长调节剂NAA,6-BA及其组合的MS固体培养基上.结果表明:下胚轴为外植体明显好于叶片,对于愈伤组织形成,叶片采用MS NAA(0.5mg/L) 6-BA(2mg/L);下胚轴MS NAA(0.5mg/L) 6-BA(2mg/L);MS NAA(0.5mg/L) 6-BA(1mg/L)为宜.对于叶片丛生芽愈伤组织培养基用MS NAA(0.2mg/L) 6-BA(2.8mg/L),下胚轴丛生芽愈伤组织培养基用MS NAA(0.01mg/L) 6-BA(0.1mg/L);MS NAA(0.05mg/L) 6-BA(0.1mg/L)为宜,诱导生根以1/2MS NAA0.3mg/L最佳,生根率达95%以上. 相似文献
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通过素心兰的组织培养试验研究，筛选出改良的 MS（大量元素、微量元素减半）＋ NAA6mg/L＋ 10％椰子汁的培养基能成功地诱导出原球茎； MS＋ NAA1～ 2mg/L＋ 10％椰子汁＋ 0.1％活性炭的培养基有利于原球茎的增殖； 1/2MS＋ BA2mg/L＋ NAA0.2mg/L＋ 10％香蕉泥的培养基有利于根状茎分化出芽和根，从而形成完整的植株。水苔是素心兰试管苗较理想的移栽基质。 相似文献
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蝴蝶兰的快速繁殖研究 总被引：5，自引：0，他引：5
通过诱导残败花梗上的休眠芽萌发,以萌发的幼芽为外植体进行组织培养,建立了蝴蝶兰(Phalae nopsishybrid)的无菌繁殖体系。诱导休眠芽萌动的培养基为MS+3.0mg/L 6-BA+3%蔗糖+0.6%琼脂;诱导多芽的培养基为MS+5.0mg/L 6-BA+3%蔗糖+0.6%琼脂+0.2%活性炭;生根壮苗培养基为1/2MS(只减无机物)+0.1mg/L 6-BA+0.5mg/L NAA+3%蔗糖+0.6%琼脂+10%香蕉+0.2%活性炭。 相似文献
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以食用仙人掌的茎片为外植体，研究了食用仙人掌离体快繁的若干影响因素。结果表明，幼嫩的茎片较成熟的茎片易于进行表面消毒。适宜的培养基为：侧芽诱导MS＋6－BA2.0mg/L NAA0.1mg/L，继代与增殖MS＋6－BA2.0mg/L NAA0.1mg/L，培养21d，增殖倍数6．9，生根培养基为1／2 MS＋NAA0.1mg/L，称载基质为泥碳：珍珠岩＝1：1，成活率98％。 相似文献
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以大花蕙兰的茎尖为外植体,探讨了不同培养基对原球茎增殖、分化和小苗诱导及壮苗生根的影响．结果表明：1)大花蕙兰组织培养的原球茎诱导和增殖都可以用培养基1／2MS BA1．0mg／L NAA0．5mg／L;2)适合大花蕙兰组织培养原球茎芽苗诱导的培养基配方为1／2MS BAl．5mg／L NAA0．5mg／L;3)适合大花蕙兰壮苗生根的培养基配方为1／2MS NAA0,1mg／L GAl．0mg／L的组合． 相似文献
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以袋鼠爪花基部侧芽为外植体,进行了组织培养与快速繁殖技术的研究.结果表明:最佳诱导培养基为1/2 MS+BA 1.0 mg.L-1+NAA 0.05 mg.L-1+Ad 1‰+卡拉胶7 g.L-1+蔗糖20 g.L-1;最佳增殖培养基为1/2 MS+0.5 mg.L-1 BA+0.05 mg.L-1 NAA+Ad 1‰+卡拉胶7 g.L-1+蔗糖20 g.L-1;最佳生根培养基为1/2 MS+0.5 mg.L-1NAA+Ad 5‰+卡拉胶7 g.L-1+蔗糖20 g.L-1.炼苗后,移入泥炭和沙比例为2:1的基质中,移栽成活率高达90%. 相似文献
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以香花槐幼叶,幼茎为材料,进行组培和快速繁殖研究.结果表明：诱导培养基为MS＋BA1.0mg.L^-1＋NAA0.05mg.L^-1时有利于愈伤组织的形成;MS＋BA0.5mg.L^-1＋NAA0.1mg.L^-1＋IBA0.2mg.L^-1时增殖倍数为3-4,且生长良好;生根培养基则用1/2MS＋NAA0.05mg.L^-1＋IBA0.2mg.L^-1可使生根率达95%以上. 相似文献
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邱崇丙 《唐山师范学院学报》2014,(1):21-23
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。 相似文献
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《海外英语》2007,(4):36
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. 相似文献
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Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject. 相似文献
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Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities. 相似文献
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RUZBEHANI Mohsen 《重庆大学学报(英文版)》2004,3(1):20-25
1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec… 相似文献
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Rachel Zupek 《海外英语》2007,(11):40-41
我们绝大部分人都同意一件事情——我们喜欢金钱。但是你对金钱的喜欢之情足够到让你创立一份事业么?.财富通常被人忽视,主要在于人们不能真正了 相似文献
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YANGShiguo 《重庆大学学报(英文版)》2004,3(1):86-88
The problem on the geometrc inequalities involving an n-dimensional simplex and its inscribed simplex is studied. Aninequality is established, which reveals that the difference between the squared circumradius of the n-dimensional simplex andthe squared distance between its circumcenter and barycenter times the squared circumradius of its inscribed simplex is not lessthan the 2(n-1)th power of n times its squared inradius, and is equal to when the simplex is regular and its inscribed siplex is atangent point one. Deduction from this inequality reaches a generalization of n-dimensional Euler inequality indicating that thecircumradius of the simplex is not less than the n-fold inradius. Another inequality is derived to present the relationship betweenthe circumradius of the n-dimensional simplex and the circumradius and inradius of its pedal simplex. 相似文献
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Rajesh Kanoi 《海外英语》2007,(1):52
Today, Sunday morning, I sit thinking and typing at my computer. My thoughts are in my homeland, India and my body is in China. The body is here and mind there for a good reason. Mr. Hu is president and I am resident and both are in each other's countries (what a difference the absence of one small letter makes!). Mr. Hu will return in a few days and I will stay on longer. 相似文献