山楂组织培养获得试管苗

植物名称山楂(Crataegus pinnatifida) 材料类别茎尖及侧芽培养条件基本培养基为 MS,附加 NAA 和 BA,设有六组处理(毫克/升):(1)NAA0.01+BA0.5 (2)NAA0.01+BA1.0 (3)NAA0.01+BA2.0 (4)NAA0.1+BA0._5(5)NAA0.5+BA0.5 (6)NAA1.0+BA0.5光照为1500lux,培养室温度26～28℃。pH5.8     

应用正交设计建立青花菜植株的再生体系

通过L16(4 5)正交试验 ,研究最适合青花菜 2周龄下胚轴愈伤组织诱导和不定芽发生的植物生长调节物质的种类和浓度组合。结果发现在NAA、6 BA、TDZ和KT四种激素中 ,NAA对下胚轴愈伤组织发生指数、不定芽发生频率的影响作用最大 ,确定以MS +NAA 0 .2 5mg/L +6 BA 0 .2 5mg/L +TDZ 0 .0 1mg/L(琼脂 0 .8% ,蔗糖 3 % ,pH5 .8)作为单因子试验的培养基。NAA、6 BA和TDZ浓度的单因子试验结果表明最适合下胚轴的培养基配方为 :MS +NAA 0 .1mg/L +6 BA 1 .0mg/L +TDZ 0 .0 6mg/L(琼脂 0 .8% ,蔗糖 3 % ,pH5 .8)。     

植物激素对驳骨丹茎愈伤组织生长和器官再生的作用

在驳骨丹离体茎切段培养中,用MS基本培养基,分别附加2毫克/升BA和0.2毫克/升NAA诱导愈伤组织,附加1毫克/升BA诱导芽分化;以2/1MS基本培养基分别附加0.5毫克/升NAA、IBA、IAA和2,4-D进行诱导发根试验,除2,4-D无效外,均能生根形成再生植株。根据上述试验结果,设计不同浓度的BA和NAA组合,进行愈伤组织继代培养,讨论这两种激素对愈伤组织生长和器官再生的调节作用。主要结果为:1.低浓度的BA和NAA组合比较有利促进愈伤组织的生长,且以中等浓度的BA和低浓度NAA的效果最佳;2.单独附加BA,其浓度在0.25—4.0毫克/升范围内,都能促进芽分化,而完全抑制了根的发生。当单加NAA,在0.5—6.0毫克/升的浓度范围内,能促进根的形成,而随其浓度的升高抑制芽的分化;3.细胞分裂素与生长素的比值>0.5时,有利芽分化而抑制根的发生,当比值<0.6时,有利根形成而抑制或减弱细胞分裂素促进芽分化的作用。在这里讨论了生长素和细胞分裂素之间对报、芽形成的拮抗作用。     

石楠的组织培养

植物名称:石楠(Phofinia serrulafa)又名千年红。材料类别:20年树龄的侧枝嫩芽。培养条件:以MS为基本培养基,附加不同的生长调节剂:(1)BA0.5mg/L(单位下同) NAA0.1;(2)BA2 NAA0.3:(3)BA4 NAA1;(4)1/2MS_0(不加任何激素)。以上培养基中均加入3％蔗糖,0.6％的琼脂粉,pH5.8。培养温度25±2℃,光照度1500～2000lx,每天照光12小时。生长与分化情况: 1.外植体增殖:在石楠生长季节,取侧枝嫩芽,流水冲洗,在75％乙醇中浸20秒,无菌条件下,再用5％的安替福民灭菌15分钟,无菌水冲洗4次,切取0.5～1cm长的嫩芽接种在(1),(2),(3)培养     

宽叶缬草子叶培养再生植株及其繁殖

植物名称:宽叶缬草(Valeriana officinalis var.latifolia)材料类别:子叶。培养条件:(1) 无菌苗播种培养基:MS大量元素+2％蔗糖。(2) 子叶发生愈伤组织及分化培养基:MS附加BA 1.5,10mg/L(单位下同);BA 0.1+NAA(0.005,0.01,0.05);NAA 0.05+BA(0.1,1,5,10)。(3) 芽繁殖培养基:MS附加BA(1,5,1C);NAA 0.05+BA(1,5,10,20);BA 10+NAA(0.01,     

木立芦荟丛生芽诱导与植株再生

取木立芦荟带节的嫩茎作外植体,培养于附加不同种类和激素浓度的MS培养基上,在附加6－BA2．0mg/L KT1.0mg/L NAA0.4mg/L时,丛生芽诱导效果最佳,数量最多;在附加6－BA1．0mg/L NAA0.2mg/L时,丛生芽长势最好,芽长且健壮,在附加NAA0．4mg／L时,生根效果最佳,当苗高3．0cm以上,根长达2．0cm以上时,打开瓶盖锻炼3d后,移栽于蛭石,河砂,腐叶土＝2：2：1的混合基质土壤中,成活率达93．2％。     

刚果12号桉和剥粒菠萝的组织培养与快速繁殖

1.刚果12号桉植物名称:刚果12号桉(Eucalyptus“12ABL”)材料类别:种子。培养条件:播种培养基为MS(不含激素)。诱导培养基为MS附加BA 1～2mg/L(单位下同),NAA 0.1～0.2,椰乳200。分化培养基附加NAA 0.5～1,BA 0.2～0.5。生根培养基附加IBA 0.5～1,NAA 0.2～0.5。培养基pH 5.8,温度28～30℃。光照每天10～12小时,光强2000 lx。     

烟草叶组织培养中器官形成的研究

用MS培养基培养烟草叶组织,研究了不同激素及有机附加成分对培养组织增殖及器官分化的影响,发现BA在所试浓度范围内(0.2～5.0毫克/升)明显促进芽的形成,但较高浓度的BA对芽的进一步生长及根的形成有抑制作用。不同细胞分裂素的比较表明:玉米素促进芽形成的活性最高,BA次之,KT较弱。细胞分裂素为烟草叶组织形成芽所必需,但其作用时间仅需保持5～6天即可,此时如移到MS基本培养基上,即能形成芽,并促进茎叶及根的形成。NAA与较低浓度的BA结合使用时,明显促进根的形成。有机附加物水解乳蛋白(1000毫克/升)、硫酸腺嘌呤(100毫克/升)和椰乳(10％)在有BA存在时,明显促进芽的形成以及愈伤组织的增殖。10~(-4)M6-氮杂尿嘧啶(AU)和2-硫尿嘧啶(TU)抑制BA对芽形成及愈伤组织增殖的促进作用,AU的作用尤为明显;但在较低浓度下(10~(-5)和10~(-6)M)无明显影响。细胞学观察表明,培养后叶肉细胞明显增大,细胞分裂形成分生组织,由之形成芽原基。     

青紫葛的组织培养

植物名称:青紫葛(Cissus discolor),又名青紫藤或花叶粉藤。培养材料:茎尖、茎节、节间及叶片。培养条件:基本培养基为MS培养基(无机盐减半),蔗糖2％,添加LH0.1mg/L,附加激素含量:(1)2,4-D 0.5mg/L(单位下同) BA0.2;(2)2,4-D 2.0 BA0.2;(3)BA1.0 NAA0.01;(4)DA2 NAA1.0。继代培养基为MS BA2     

晚香玉块茎的离体培养

植物名称:晚香玉(Polianthes tuberosa) 材料类别:块茎培养条件:接种培养基为MS,蔗糖浓度3％,琼脂0.7％,pH调至6.0,其附加激素类物质有:(1)NAA 1mg/l(单位下同) ZT0.2;(2)NAA1 BAO.1;(3)BA1 NAA0.1;(4)BA1 KT1 NAA0.5。培养温度为25±2℃,每天光照10小时,光强为2支 40W日光灯。生长与分化情况:取块茎洗净后,切成0.6×0.6×0.4cm见方,接种在上述各种培养基上。经一个月培养后,在1号培养基上,光长数条根而已,却没有芽的分化;在2—4号培养基上,均有芽的分化,     

金红花的组织培养快速繁殖研究

金红花顶芽或腋芽培养在ＭＳ基本培养基中。研究植物激素及培养基的物理性质对器官形成的影响。试验结果表明：芽增殖培养基以附加ＢＡ１．０ｍｇ／ｌ和ＮＡＡ０．２ｍｇ／ｌ为好。生根培养基为１／２ＭＳ＋ＮＡＡ０．１ｍｇ／１。糊状培养基有利于苗的生长,试管有根苗和无根苗移栽均获得高的成活率。     

绞股蓝的快速繁殖研究

本文报道以广西四个县所产绞股蓝,在MS基本培养基中进行茎段培养,研究植物激素对器官形成的影响。试验结果表明,细胞分裂素BA明显促进芽的形成和增殖,BA和NAA或GA配合使用有助于苗的形成和生长,不同产地的绞股蓝类型均能诱导形成丛生芽,但分化芽数有差异。诱导生根用1/2 MS附加NAA或IBA,试管苗一年四季移栽均获得较高的成活率。幼苗移栽大田生长良好,当年可获得较好产量。     

毛地黄(Digitalis purpurea)叶离体培养过程中光质与培养基对器官发生的交互作用

培养基成分影响毛地黄叶外值体的生长,不含BA的培养基中芽不能发生,无NAA的培养基中无根发生。光质的效应与培养基成分有关,黄、蓝、绿光在未加有机成分(NAA为0.ling·L~(-1))的培养基中能促进芽的生长,当NAA为0.5 mg·L~(-1)时则抑制芽的生长。红光、黑暗处理与培养基成分关系不大,一般均抑制发芽;根的发生不需要光。光质和培养基之间有交互作用。     

Influence of type of explant,plant growth regulators,salt composition of basal medium,and light on callogenesis and regeneration in <Emphasis Type="Italic">Passiflora suberosa</Emphasis> L. (Passifloraceae)

Passiflora suberosa is used in popular medicine, improvement programs, and as an ornamental plant. The goal of this study was to establish efficient protocols for plant regeneration and callus induction from nodal, internodal and leaf segments excised from in vitro-grown plants. The different morphogenetic responses were modulated by the type and concentration of plant growth regulators, according to the basal medium and light conditions. Shoot formation occurred through three pathways: (1) development of preexisting meristems, (2) direct organogenesis, and (3) indirect organogenesis. Development of preexisting meristems was observed from nodal segments (1 shoot/explant) in response to α-naphthaleneacetic acid (NAA), picloram (PIC), and 2,4-dichlorophenoxyacetic acid (2,4-D), using two basal media (MS and MSM). Direct organogenesis in this species was obtained for the first time in this work, through shoot development from internodal segments in the presence of 6-benzyladenine (BA). The highest regeneration rates were achieved on MSM medium, regardless of the BA concentration. Indirect organogenesis was achieved from all explant types on media supplemented with BA, used alone or in combination with NAA. The highest regeneration efficiency was obtained from internodal segments cultured on MSM medium plus 44.4 μM BA. Compact, friable, or mucilaginous non-morphogenic calluses were induced by thidiazuron, PIC, 2,4-D, and NAA. High-yielding friable calluses obtained on MSM medium supplemented with 28.9 μM PIC are being used for the establishment of suspension cultures and further analysis of the production of bioactive compounds.     

罗汉果茎段离体培养研究

罗汉果茎段培养在MS基本培养基中,研究植物激素对器官形成的影响,试验结果表明细胞分裂素BA促进芽的形成和增殖;而KT则有利于根的形成,却抑制芽的增殖,BA和IBA配合使用,对茎段形成芽有增效作用。通过继代培养,能繁殖大量绿苗,这揭示出同一块离体茎组织培养出许多小植株的可能,将嫩梢转入含有NAA0.2毫克/升的1/2MS培养基中,能诱导生根,形成完整小植株,试管苗成功地移栽田间,并已开始开花结果,     

激素对贯叶连翘器官分化的影响

贯叶连翘 (ＨｙｐｅｒｉｃｕｍｐｅｒｆｏｒａｔｕｍＬ .)为多年生草本 ,中国民间主要用于止血、抗炎、妇科病等[1] ,欧洲民间用于治疗创伤也有相当长的历史。近年来 ,欧、美等国家和地区将其应用于抑郁症的治疗 ,取得了很好的疗效。 80年代后期 ,由于发现该植物体内含有显著抗     

Simple hormonal regulation of somatic embryogenesis and/or shoot organogenesis in caryopsis cultures of Pogonatherum paniceum (Poaceae)

Pogonatherum paniceum (Poaceae) is a perennial plant with good potential for eco-recovery and ornamental function. This study presents in vitro culture systems of simple hormonal regulation of somatic embryogenesis and shoot organogenesis from mature caryopses. Mature caryopses of P. paniceum were grown on Murashige and Skoog medium with 3% sucrose (w/v) and various concentrations or combinations of 2,4-dichlorophenoxyacetic acid (2,4-D), α-naphthaleneacetic acid (NAA) and 6-benzylaminopurine (BAP). Morphological development was analyzed by light microscope after histological sectioning. Four types of callus were induced by different concentrations of 2,4-D. Type I callus was regenerated via somatic embryogenesis; type II callus failed to produce any regeneration; type III callus had both somatic embryogenesis and shoot organogenesis capacities; and type IV callus only displayed shoot organogenesis capacity. Regarding hormone combinations used in this study, NAA only induced type IV callus and BAP only induced direct multiple shoot formation. The combinations of 2,4-D and NAA induced type III callus. Several of the regeneration pathways were simply controlled by one or two kinds of plant hormones. The established systems will be helpful for further research on the developmental mechanism of switch between somatic embryogenesis and shoot organogenesis.     

木薯良种—“南植188”的组培快速繁殖研究

本文报道木薯良种——“南植188”的快速繁殖。茎段培养在MS或改良MS基本培养基中,研究植物激素对器官形成的影响及试管苗移栽技术。试验结果表明BA促进芽的形成和增殖,BA和NAA混合使用有利芽伸长,当无根苗转生根培养基,诱导生根获得完整植株,试管苗移栽成功,幼苗生长良好。     

Efficient plant regeneration via somatic embryogenesis and organogenesis from the explants of <Emphasis Type="Italic">Catharanthus roseus</Emphasis>

High-frequency plant regeneration of C. roseus cv. ‘little bright eye’ via somatic embryogenesis and organogenesis from five out of six explants was standardized. Two factors were found to be important for regeneration: (1) the type of explants, and (2) the combination and concentrations of plant growth regulators. The highest regeneration percentage through somatic embryogenesis was obtained from mature zygotic embryo in MS medium supplemented with 7.5 μM of thidiazuron (TDZ). The mature embryo also regenerated efficiently via organogenesis in MS medium supplemented with either 2.5 μM TDZ or 5.3 μM α-naphthalene acetic acid (NAA) and 2.2 μM 6-benzylaminopurine (BA). Hypocotyl and cotyledon did not induce somatic embryogenesis and organogenesis in TDZ-containing medium but gave a maximum percentage of shoots in MS medium supplemented with 5.3 μM NAA and 2.2 μM BA. Stem nodes and meristem tips showed better regeneration via organogenesis in the medium supplemented with NAA and BA and in lower concentrations of TDZ.     

Effects of plant growth regulators on the rapid proliferation of shoots and root induction in the Chinese traditional medicinal plant Atractylodes macrocephala

We developed an efficient plant regeneration protocol for rapidly propagating Atractylodes macrocephala Koidz,an important traditional Chinese medicinal plant,via shoot organogenesis.Shoot multiplication was induced on Murashige-Skoog (MS) medium supplemented with various concentrations of N-phenyl-N-1,2,3-thidia-zol-5-ylurea (TDZ),6-benzylaminopurine (BA) and α-naphthaleneacetic acid (NAA).Rooting was induced on half-strength MS medium supplemented with NAA and indolebutyric acid (IBA).The maximum mean number of shoots (5.61) was obtained from a single explant by the combined effect of 1.08 μmol/L NAA and 2.25 μmol/L TDZ.The longest roots and a minimum number of roots were produced when they were cultured in a medium without plant growth regulators.The shortest roots and the largest number of roots were observed in the medium supplemented with 2.7μmol/L NAA.