枳多芽苗的诱导

枳幼苗茎段的腋芽在含BA(0.5毫克/升)和NAA(2毫克/升)的MS培养基上能诱导出大量丛生芽,丛生芽苗茎段的腋芽在含BA(0.5-2毫克/升)的MS继代培养基上又可增殖,将无根幼苗分别转至含IAA、IBA和NAA(均为1毫克/升)的MS培养基上则生根形成完整植株。     

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,     

罗汉果叶组织培养的研究

用MS基本培养基培养罗汉果叶组织,研究植物激素对形成器官的影响。不同细胞分裂素的试验结果表明:在试验浓度范围内(0.5—1.0毫克/升)。BA明显促进茅的形成,KT和对照(基本培养基)均无形成茅,BA为罗汉果叶组织形成芽所必需的。IAA或IBA0.5毫克/升和BA1.0毫克/升配合使用。对叶组织形成芽有增效作用。茅进一步长出茎叶,将茎叶转入含有NAA0.2毫克/升的1/2MS的生根培养基,明显促进根的形成和发展成完整植株。 我们进行长滩果,拉江果及青皮果等三个罗汉果主要品种的叶组织离体培养,均能诱导形成丛生茅,将丛生叶分开,可不断扩大繁殖,促进芽的增殖,能获得大量绿苗。幼苗移栽土壤获得成活,成活率达80—100％,幼苗生长良好。     

川芎的组织培养及植株再生

植物名称:川芎(Ligusticum wallichii Franch)材料类别:长有1—2片真叶的幼嫩茎段和叶片培养条件:基本培养基采用MS。诱导愈伤组织培养基为MS,每升补加2,4-D2.0毫克,6BA0.4毫克;诱导芽分化培养基为MS,每升补加6BA0.4毫克、IAA0.5毫克;诱导根分化培养基为1/2MS,每升补加6BA0.2毫克,IAA1.0毫克。培养温度     

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。     

石梓茎尖培养

植物名称:石梓(Gmelina arborea)材材类别:侧枝顶芽。切取5毫米左右的茎尖接种。培养条件:基本培养基均为MS。(一)不定芽分化培养基,每升添加1.0毫克BA;(二)幼苗培养基,每升添加0.8毫克BA和0.5～1.0毫克IAA;(三) 生根培养基,每升添加0.5毫克IBA,或先经125ppm浓度的IBA溶液处理,再培养在无激素的液体MS培养基上。培养温度在24℃以上,室内自然散射光。生长和分化情况:(一)在MS+BA 1.0毫克/升培养基上,培养十天以后,逐渐形成3～4个或更多个不定芽,间或有少量幼苗形成,二十天以后如不转移到MS+BA     

紫云英叶片及叶肉原生质体的培养

本工作研究了豆科植物紫云英的叶片及叶肉原生质体的培养。叶片培养实验表明,诱导愈伤组织的最适培养基为MS加1.0-2.0毫克/升2,4-D和0.25毫克/升KT;诱导根分化需加1.0—5.0毫克/升NAA和0.5毫克/升BA;而苗分化则以0—0.5毫克/升IAA和0.5毫克/升BA为好。高浓度的NAA有利于根分化而抑制茎芽形成;高浓度的IAA对根和芽分化都有抑制作用。叶肉原生质体分离和培养试验表明,紫云英叶肉原生质体的释放及其培养活力受叶龄、植株生理状态和酶浓度的影响。叶肉原生质体在改良的KM8P培养基中能分裂。用改良KM8细胞培养基定期稀释,可使分裂持续进行而得到细胞团。BA和2,4-D为诱导紫云英叶肉原生质体分裂所必需。其最佳组合激素为BA 0.21毫克/升和2,4-D 1.13毫克/升。葡萄糖作为渗透压稳定剂时,其浓度明显影响原生质体的存活率。弱光条件下培养比黑暗培养有利于叶肉原生质体分裂。由叶肉原生质体形成的愈伤组织能形成瘤状结构和根。     

黄山药丛生芽诱导与植株快速繁殖

采用黄山药的带芽茎段为外植体,试验了不同激素处理对芽诱导的影响,通过继代培养诱导丛生芽使大量增殖,经诱导生根和炼苗移栽而完成植株的快速繁殖再生。结果表明,MS 6-BA2.0mg/L NAA0.5-1.0mg/L为芽诱导的最适培养基,MS 6-BA1.0mg/L NAA0.5-1.0mg/L为继代增殖的最佳培养基,月增殖系数约为3倍,1/2MS 1BA0.5mg/L培养基诱导生根相对较好,诱导率为50%,组培苗经炼苗后,移栽成活率可达80%。     

湖北双蝴蝶的组织培养研究

以湖北双蝴蝶带芽茎段、不带芽茎段及叶片为外植体,以MS为基本培养基,通过添加不同的植物生长物质种类和浓度配比,建立湖北双蝴蝶组培快繁体系。结果如下:在所有实验方案中,带芽茎段的出愈率最高,是理想的离体快繁材料。较适宜的初代培养基为MS+BA2.0mg/L+蔗糖3.0%,增殖培养基为MS+BA2.0mg/L+NAA0.1mg/L+蔗糖3.0%,而根的诱导则在1/2MS+NAA0.5mg/L+蔗糖1.5%的培养基上进行较为适宜。同时对组织培养过程中湖北双蝴蝶植株再生的方式进行了讨论。     

矮生龙船花的组织培养和快速繁殖

矮生龙船花(IxoracoccineaL.)的带节茎段在MS 2,4D2.0mg/L培养基上产生大量的愈伤组织;在MS 6BA1.0mg/L NAA0.2mg/L培养基上芽的增殖系数达413,并产生少量的愈伤组织;在MS NAA0.2～2.0mg/L培养基上只产生芽而无愈伤组织形成。愈伤组织在MS 6BA0.5mg/L NAA0.5mg/L培养基上产生大量的不定芽,丛生芽在MS 6BA0.5mg/L NAA0.5mg/L培养基上生长较快并产生较多分枝,将分枝节下或切成段后在MS 6BA0.5mg/L NAA0.5mg/L培养基上能迅速生长并产生新的分枝。试管内小苗在1/2MS NAA0.5mg/L培养基上的生根壮苗效果较好。矮生龙船花试管苗成活率为935%。     

彩纹海棠的快速繁殖研究

彩纹海棠叶片培养在MS基本培养基中,研究植物的激素、培养基的物理性质对器官形成的影响及试管苗移栽技术等.试验结果表明细胞分裂素BA促进芽的形成和增殖。BA和NAA配合使用,对叶片形成芽有增效作用。通过继代培养,能繁殖大量无根苗。将无根苗转入含有NAA0.2mg/L或IBA ling/L的1/2MS培养基中,诱导生根形成完整植株。诱导叶片形成芽应采用固体培养基;而液体静置培养则有利于促进芽发育成苗和生根。试管苗移栽获得成功,幼苗生长良好。     

马蹄莲组织培养和快速繁殖

本文报道从新西兰引进马蹄莲杂交种的8个优良品种。研究植物激素及培养基物理性质对器官形成的影响。试验结果表明细胞分裂素BA0.5—1.0毫克/升明显促进芽的形成和增殖。随着BA浓度的增高.形成芽数也随着增多。备品种均能诱导形成丛生芽。低浓度BA或NAA有利于芽发育和诱导生根。固体培养有利于诱导彤成丛生芽;而液体静置培养促进芽发育和生根。各品种的试管苗成功地移栽田间并已开始开花。     

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。     

Optimisation of plantlet regeneration from leaf and nodal derived callus of <Emphasis Type="Italic">Vanilla planifolia</Emphasis> Andrews

An indirect in vitro plant regeneration protocol for Vanilla planifolia has been established. Juvenile leaf and nodal segments from V. planifolia were used as explants to initiate callus. Nodal explants showed better callus initiation than juvenile leaf explants, with 35.0% of explants forming callus when cultured on Murashige and Skoog (MS) basal medium supplemented with 2.0 mg/l 1-naphthylacetic acid (NAA) and 1.0 mg/l 6-benzyladenine (BA). Almost 10.0% of juvenile leaf explants were induced to form callus on the MS basal medium containing 2.0 mg/l NAA and 2.0 mg/l BA, whereas no callus formed in the presence of any concentrations of 2,4-dichlorophenoxyacetic acid (2,4-D) and BA. After 8 weeks, callus generated was transferred to MS basal medium containing 1.0 mg/l BA and 0.5 mg/l NAA. A mean number of 4.2 shoots per callus was produced on this medium, with a mean length of 3.8 cm after 8 weeks of culture. Roots formed on 88.3% of plantlets when they were cultured on MS medium supplemented with 1.0 mg/l NAA, with a mean length of 4.4 cm after 4 weeks of culture. Of the rooted plantlets, 90.0% survived acclimatisation and were making new growth after 4 weeks.     

Shoot regeneration and somatic embryogenesis from different explants of Brahmi [Bacopa monniera (L.) Wettst.]

The morphogenetic potential of node, internode and leaf explants of Brahmi [Bacopa monniera (L.) Wettst.] was investigated to develop reliable protocols for shoot regeneration and somatic embryogenesis. The explants were excised from shoots raised from axillary buds of nodal explants cultured on Murashige and Skoog (MS) basal medium. Presence of 6-benzylaminopurine (BA) or kinetin influenced the degree of callus formation, from which a large number of shoot buds regenerated. Leaf explants gave the largest number of shoot buds followed by node and internode explants. BA was superior to kinetin; BA at 1.5 – 2.0 mg/l appeared to be optimum for inducing the maximum number of shoot buds. MS + 0.1 mg/l BA + 0.2 mg/l indole-3-acetic acid was the most suitable for shoot elongation. Elongated shoots were rooted on full- or half-strength MS medium with or without 0.5 – 1.0 mg/l indole-3-butyric acid or 0.5 – 1.0 mg/l α-naphthaleneacetic acid. The rooted plants were successfully established in soil. Calli derived from nodal explants cultured on MS medium containing 0.5 mg/l 2,4-dichlorophenoxyacetic acid (2,4-D), when subcultured on MS medium containing 0.1 or 0.5 mg/l BA or 0.2 mg/l 2,4-D + 0.1 or 0.5 mg/l kinetin, developed somatic embryos. The somatic embryos germinated either on the same media or on MS basal medium, and the resulting plantlets were successfully transplanted to soil. Received: 25 September 1996 / Revision received: 23 October 1997 / Accepted: 12 November 1997     

野葛的组织培养和植株再生

野葛〔Ｐｕｅｒａｒｉａｌｏｂａｔａ（Ｗｉｌｄ．）Ｏｈｗｉ〕为豆科多年生缠绕藤本植物,分布遍及全国,主产南方［１］,可药食两用,其块根肥厚,富含淀粉、蛋白质、钙、磷、铁及脂肪酸等,还含有多种异黄酮类化合物,对治疗心绞痛、高血压、冠心病,抑制肿瘤等效果显...     

Somatic embryogenesis and plant regeneration from immature embryo explant of papaya (Carica papaya L. cv. washington and honey dew)

Immature zygotic embryo explants of Carica papaya were cultured on MS medium supplemented with 2,4-D (2.0 mg/l) and formed globular embryos on explants without callus formation in 4-6 weeks. Maturation and conversion of somatic embryos was also achieved on the same medium. Cotyledonary stage embryos germinated to 63.66 and 68.33% in cv. honey dew and washington respectively in MS basal medium supplemented ABA (0.5 microm/l). Robust development and proliferation of plantlet roots in vitro was obtained on MS basal medium. Hardened plantlets have 60% survival rate.     

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。