甜叶菊试管苗的研究

以甜叶菊种子萌发的幼苗为试材,用茎尖为外植体,在MS 0.5mg/LNAA 0.5mg/L BA 3g/L蔗糖培养基中诱导一次性丛生芽,在1/2 MS 1.0mg/L NAA 0.5mg/L IBA 3g/L蔗糖培养基中诱导大量须根,产生15～20倍健壮的丛生芽,为甜叶菊试管苗工厂化系列生产打下了基础.     

“蜜宝”火龙果的组织培养技术

对“蜜宝”火龙果组织培养的外植体选择,不同培养基对腋芽诱导、丛生芽增殖及生根培养的影响等进行了研究。结果表明：近老熟茎段为最佳外植体,最适腋芽诱导培养基为MS+6-BA3.0 mg/L+NAA0.1 mg/L+琼脂6.4 g+蔗糖30 g,最适增殖培养基为MS+6-BA1.5 mg/L+NAA0.1 mg/L,最适生根培养基为1/2 MS+IBA0.5 mg/L+活性炭1 g/L+琼脂6.4 g+蔗糖30 g。     

火焰兰茎段侧芽离体再生及褐化的研究

以火焰兰的茎段为外植体，探讨不同植物激素配比对茎段侧芽萌发和生根壮苗的影响，以及不同培养基配方和不同添加剂对火焰兰生长过程中褐化现象的抑制作用。结果表明：最佳侧芽诱导培养基为MS＋6-BA 3.0 mg/L＋NAA 0.5mg/L，培养40 d，后诱导率可达97.95%；添加活性炭0.3 g/L可有效抑制侧芽诱导过程中的褐化现象，褐化率仅为13.17%；1/2 MS＋6-BA 0.2 mg/L＋NAA 1.0 mg/L＋AC 0.5 g/L生根效果最好，生根率达到100%，且植株生长健壮。利用火焰兰茎段侧芽能够离体再生获得瓶苗，建立高效的火焰兰茎段为外植体的离体再生体系，为扩大拓宽火焰兰组织培养外植体来源和快速繁殖技术提供技术支撑。     

甘蔗品种“粤糖55号”的离体快速繁殖

以甘蔗品种"粤糖55号"为材料,对其离体快繁技术进行了研究。结果表明,用带腋芽的甘蔗茎段作为外植体,经0.1%HgCl2消毒7min后,接种到MS+6-BA 1.0 mg/L+NAA 0.2 mg/L的培养基上进行启动培养,能够诱导丛生芽。丛生芽继代和生根最优的培养基分别为MS+6-BA 1.0 mg/L和MS+NAA 2.0mg/L。甘蔗组培苗生根炼苗后,移到木糠中进行假植,成活率为90%~95%。     

尖蜜拉的快繁技术

以尖蜜拉老茎干上的不定芽作外植体,采用从不定芽→丛生芽→完整植株的繁殖途径进行繁殖。结果表明∶尖蜜拉不定芽外植体在温度（262）℃,光照强度1500～2000k、光照时间12hA条件下,茎萌发最适培养基为MS+6BA 2.0mgL+NAA0.1mgL+Vc0.5gL;茎增殖最适培养基为MS附加6-BA3.0mg人+NAA 0.5mgL;茎生根最适培养基为1/2MS+ BA 0.5mgl+NAA 3.0mgL+AC0.5gL;生根时温度可适当上升为28+2）℃,光照强度20001x,光照时间12h/。     

珍珠玫瑰的离体快繁技术初探

以珍珠玫瑰的侧芽为外植体,对珍珠玫瑰离体快繁进行初步研究.试验结果表明:0.1%升汞作表面消毒剂,外植体的最适消毒时间为12min;初代培养诱导不定芽的适宜培养基为MS BA1.0mg/L NAA0.1mg/L;芽苗继代增殖的最适宜培养基为MS BA1.0mg/L NAA0.2mg/L.     

三倍体枇杷茎尖培养与植株再生

以三倍体枇杷茎尖为外植体,研究了取材时间及茎尖大小、植物生长调节剂对三倍体枇杷茎尖培养与植株再生过程中萌发、伸长、生根及移栽的影响。结果表明:春季取材且茎尖大小为0.7 cm时,茎尖成活率最高,为77.5%;初代培养适宜培养基为MS+6-BA 1.0 mg/L+NAA 0.5 mg/L+IBA 1.5 mg/L,在此培养基上,三倍体枇杷茎尖萌发率高达91%;茎尖伸长适宜培养基为MS+6-BA 0.5 mg/L+NAA 0.3 mg/L+GA30.3 mg/L,平均芽苗高度可达4.9 cm;芽苗增殖适宜培养基为MS+6-BA 1.0 mg/L+NAA 0.3 mg/L+Tryptone 750 mg/L,增殖系数为7.7;生根适宜培养基为1/2MS+NAA 0.25 mg/L+IBA 2.0 mg/L,生根率为73.3%;三倍体枇杷组培苗移栽入腐熟有机肥∶园土∶锯末(1∶2∶1)的基质中成活率达到93.67%。     

银后粗肋草的离体培养和快速繁殖

以银后粗肋草的幼嫩叶片为材料,研究不同植物生长调节剂组合对愈伤组织诱导和分化的影响;以带侧芽的茎段为材料,研究不同接种方式、不同6-BA和NAA组合对丛生芽诱导的影响;以愈伤组织诱导的不定芽和茎段诱导的丛生芽为材料,研究不同植物生长调节剂组合对丛生芽的增殖和生根的影响;最后研究不同移栽基质组合对试管苗移栽成活的影响。结果表明:(1)叶片接种在MS+6-BA 2.5 mg/L+NAA 0.1 mg/L培养基培养中60 d后,愈伤组织诱导率为63.41%,不定芽再生率为26.88%,平均生成芽数为3.80个。(2)带侧芽的茎段水平放置接种在MS+6-BA 2.0 mg/L+NAA 0.1 mg/L培养基上,丛生芽诱导率为91.91%,平均生成芽数为5.29个。(3)将经叶片诱导愈伤组织分化所得的不定芽和经茎段诱导所得的丛生芽切成单株,接种到MS+6-BA 3.0 mg/L+NAA 0.1 mg/L或MS+KT 3.0~4.0 mg/L+NAA 0.1 mg/L增殖培养基中,不定芽和丛生芽增殖和生长良好。(4)将在增殖培养基中长至4 cm以上的小植株转入到1/2 MS+NAA 0.2 mg/L的生根培养基中培养20 d后,生根率达100%,平均根长4.49 cm,每株平均根数6.80条。(5)生根苗移栽到1/2木屑+1/4珍珠岩+1/4菜园土混合基质中,成活率达95.40%。     

柱花草茎段组织培养研究

以‘热研2号’柱花草茎段为外植体,研究不同激素种类及组合对试管苗诱导、增殖和生根的影响。结果表明：将带芽茎段接种在MS＋6-BA 5.0 mg/L＋GA3 0.5 mg/L的培养基中腋芽诱导率最高可达90%;最佳不定芽增殖培养基为MS＋6-BA 1.0 mg/L＋NAA 0.5 mg/L,其分化率达100%;最佳生根培养基为MS＋IBA 1.0 mg/L＋IAA 1.0 mg/L。综上所述,该研究结果改变了丛生芽的产生途径,缩短了分化时间,提高了增殖速度,是快速繁殖柱花草苗的有效方法。     

胆木组织培养与快速繁殖技术研究

以胆木(Nauclea officinalis)无菌实生苗的茎段、叶片、叶柄作为外植体,对其进行组织培养和快速繁殖研究.结果表明:种子消毒采用70％的酒精浸泡10s,再用2％的次氯酸钙消毒8～10 min,效果较理想;以带芽茎段为外植体可实现丛生芽增殖;最佳丛生芽苗的诱导和增殖培养基为1/2 WPM附加0.5 mg/L 2,4-D,其次为1/2 WPM附加0.5 mg/L IBA和1/2 WPM附加1.0 mg/L IBA+ 0.5 mg/L 6-BA;芽苗增值系数达4.8,芽苗诱导率达94％;芽苗生根壮苗培养中效果较好的培养基为(1/2～1/4)WPM+0.5 mg/L 2,4-D和(1/2～1/4)WPM+0.5 mg/LIBA.胆木试管苗移栽成活率达到80％.     

海南龙血树的组织培养与快速繁殖

以海南龙血树的顶芽和侧芽作为外植体，把其接种于MS＋BA1mg/L＋NAA0．1mgg/L＋PVP100 mg/L＋蔗糖30g／L培养基上培养40-50d可诱导其腋芽萌发，再把萌发后所形成的新芽切割下来接种于MS＋BA 2mg／L＋KT 0．5mg／L＋蔗糖30g／L的培养基上培养25-30d可诱导形成丛生芽，丛生芽在继代培养过程中每25-30d可增殖3～5倍。把丛生芽分割成单株并接种于MS＋BA3mg厂L＋GA，1mg／L＋蔗糖30g／L培养基上培养4周后使其壮苗后再接种于MS＋NAA0．5～1．0mg／L＋蔗糖30g／L培养基上培养4周可诱导小芽形成完整的根系，小植株移栽成活率可达98％。该体系的建立为海南龙血树的工厂化育苗奠定了坚实的基础。     

龙竹的组织培养

以龙竹的幼枝节段作为接种外植体,采用从腋芽-丛生芽-完整植株的繁殖途径进行繁殖。结果表明:在MS+BA 2 mg·L-1+NAA 0.2 mg·L-1+PVP 250 mg·L-1+蔗糖30 g·L-1培养基上培养10-20 d可诱导其腋芽萌发,新芽接种于MS附加BA 2 mg·L-1+KT 0.5 mg·L-1+CW 100 mL·L-1+蔗糖30 g·L-1的培养基上培养20 d可诱导形成丛生芽,丛生芽在继代培养过程中每20-25d可增殖3-5倍。把丛生芽接种于1/2MS+NAA2mL·L-1+IAA2mL·L-1+蔗糖20 g·L-1培养基上培养4周后可诱导形成完整的根系,小植株移栽成活率可达98％。该体系的建立为龙竹的工厂化育苗奠定了坚实的基础。      

海巴戟天的离体快速繁殖(简报)

从多果无病虫害的母树中选取的幼嫩侧枝,经表面消毒后切取侧芽并接种到MS基本培养基,附加蔗糖浓度30g/L,BA2mg/L,NAA0.1mg/L初代培养基上,培养40d后,侧芽萌发率达80%以上。增殖培养基与初代培养基相同,以40~50d为一增殖周期,增殖系数达2~3倍。当新芽增殖到足够数量时,切取2~3cm的新芽接种到1/2MS大量元素,全量微量元素,蔗糖浓度为30g/L,IBA1mg/L,活性炭1g/L的生根培养基生根培养基上,生根率高达100%,植株在沙床的移栽成活率均达95%以上。30cm高的植株便可种植到大田。     

Mass propagation of Rauwolfia serpentina L. Benth

A protocol for mass propagation through axillary bud proliferation was established for Rauwolfia serpentina L. Benth. (Apocynaceae). MS medium supplemented with 1.5 mg L(-1) BA and 0.2 mg L(-1) NAA elicited the maximum number of shoots (4 multiple shoots) from nodal explants. These adventitious shoots were best rooted on half strength MS medium supplemented with 1.0 mg L(-1) each of IBA and IAA. The in vitro raised plants were acclimatized in glass house and successfully transplanted to field condition with almost 95% survival.     

甘蔗健康种苗培育体系的建立

通过热处理、温热处理结合茎尖分生组织培养建立有效的甘蔗(Saccharum L.)健康种苗生产的技术体系。以经过热处理和温热处理的甘蔗带芽茎段萌生的腋芽为外植体,取其茎尖分生组织接种于MS BA1.0mg/L NAA0.1mg/L PVP200mg/L 蔗糖30g/L的培养基上培养10￣20d可诱导其产生完整的小芽,再把产生的新芽切割下来接种于MS 6BA1.0mg/L KT0.5mg/L 蔗糖30g/L的培养基上培养20d后便可形成由3￣5个芽组成的丛生芽,丛生芽在继代培养过程中每15￣20d可增殖3￣5倍。把丛生芽分割成单株并接种于1/2MS NAA1mg/L 蔗糖20g/L培养基上培养10￣20d可诱导小芽形成完整的根系,小植株移栽成活率可达98%。植株生长健壮、整齐、无变异,经分子检测证明小植株能脱去宿根矮化病和花叶病的病原。该体系的建立为甘蔗健康种苗的工厂化育苗奠定了坚实的基础。     

Mass multiplication of Bixa orellana L. through tissue culture for commercial propagation

To reduce the time period for in vitro regeneration in annatto (Bixa orellana L.), a highly efficient two-stage plant regeneration protocol had been developed that can be used commercially. Different types of explants: nodal shoot tips, shoot tips and single nodes from in vitro grown seedlings were inoculated onto the Murashige and Skoog (MS) medium supplemented with different concentrations and combinations of plant growth regulators. Highest number of shoot buds was obtained when nodal shoot tip explants were inoculated onto MS medium supplemented with 31.1 μM N⁶-benzyladenine (BA) and 14.7 μM phenylacetic acid (PAA). PAA in combination with BA exhibited a synergistic effect on shoot multiplication and elongation. Sub-culturing of the shoots onto the MS medium supplemented with BA (13.3 μM) and PAA (7.3 μM) produced elongated shoots. Elongated shoots when inoculated onto the MS medium supplemented with 4.9 μM indole-3-butyric acid (IBA) produced optimal rooting. The rooted plantlets were hardened and their field survival rate after 6 weeks time was 73%.     

花生幼叶芽诱导和植株再生研究

从萌发9－10d的花生幼嫩叶片上切取中段作外植体，接种MS＋BA 3mg/L NAA 0.8mg/L AgNO3 2mg/L诱芽培养基，12－14d后产生丛生芽点，芽诱导率达78．9％，平均每外植体产生9个丛生芽。4周后转至MS BA 3mg/L AgNO3 2mg/L诱导芽伸长，诱导生根后获得再生植株。     

In vitro regeneration from petiole explants of non-toxic Jatropha curcas

Jatropha curcas, a multipurpose shrub has acquired significant economic potential as biodiesel plant. The seeds or pressed cake is toxic due to the presence of toxic substances and is not useful as food/fodder despite having the best protein composition. A simple, efficient, and reproducible method for plant regeneration through direct organogenesis from petiole explants of non-toxic J. curcas was developed using Murashige and Skoog (MS) medium supplemented with different concentrations of thidiazuron (TDZ). The best induction of shoot buds (57.61%), and number of shoot buds (4.98) per explant were obtained when in vitro petiole explants were placed horizontally on MS medium supplemented with 2.27 μM TDZ. The Induced shoot buds were transferred to MS medium containing 10 μM kinetin (Kn), 4.5 μM 6-benzyl aminopurine (BA), and 5.5 μM α-naphthaleneacetic acid (NAA) for shoot proliferation and subsequent elongation was achieved on MS medium supplemented with 2.25 μM BA and 8.5 μM IAA. The elongated shoots could be rooted on half-strength MS medium with 15 μM IBA, 11.4 μM IAA and 5.5 μM NAA with more than 90% survival rate.     

绿宝石喜林芋叶片培养及植株再生

结果表明：诱导绿宝石喜林芋叶片产生愈伤组织频率最高的培养基是ＭＳ＋ＢＡ０．０５ｍｇ／Ｌ＋２．４－Ｄ１．０ｍｇｇ／Ｌ。最适于愈伤组织分化的基本培养基是Ｎ６；３ｍｇ／Ｌ的ＢＡ、ＺＴ和ＫＪ均能诱导愈伤组织产生不定芽，其中以ＢＡ为好；ＣＨ对愈伤组织的分化有促进作用。Ｎ６＋ＢＡ７ｍｇ／Ｌ＋ＩＢＡ１．０ｍｇ／Ｌ对不定芽的增殖效果较好，３０ｄ可增殖９．４倍。１／２ＭＳ＋ＩＢＡ０．５ｍｇ／Ｌ诱导生根效果好。试管苗     

蜻蜓凤梨叶片组织培养植株再生的研究

以蜻蜓凤梨试管苗叶片为外植体进行离体再生研究。结果表明，叶片诱导直接分化不定芽的最佳培养基是MS＋BA 5.0 mg/L＋IBA 1.5 mg/L，分化率高达80%。增殖培养基为MS＋BA 0.5 mg/L＋NAA 0.2 mg/L。壮苗培养基为MS＋NAA 2.0 mg/L。生根培养基为MS＋NAA 2.0 mg/L＋AC 0.5 g/L，生根率达100%。