共查询到20条相似文献，搜索用时 62 毫秒
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Salma U Rahman MS Islam S Haque N Jubair TA Haque AK Mukti IJ 《Pakistan journal of biological sciences: PJBS》2008,11(12):1638-1641
The influence of media composition on callus induction and subsequent regeneration of Rauwolfia serpentina L. Benth has been studied. High frequency (96.43%) callus induction was obtained when nodal segments from in vitro raised shoots were cultured on MS medium supplemented with 0.5 mg L(-1) BA and 2.0 mg L(-1) NAA. The callus differentiated into adventitious shoots when it was subcultured on MS medium supplemented with 2.0 mg L(-1) BA with 0.2 mg L(-1) NAA. Regenerated shoots were best rooted on half-strength MS medium with 1.0 mg L(-1) each of IBA and IAA. 相似文献
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海南龙血树的组织培养与快速繁殖 总被引：14，自引：0，他引：14
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。 相似文献
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尾叶桉U6遗传转化再生体系的建立 总被引：1，自引：0，他引：1
以桉树品种尾叶桉U6叶盘为外植体,选用MS培养基为基本培养基,附加激素6-BA,IAA,IBA,NAAA,通过研究不同激素浓度组合对外植体愈伤诱导及不定芽分化的影响,建立了较好的遗传转化再生体系.结果表明,尾叶桉U6叶盘最适分化培养基为MS 6-BA 2.0 mg/L 2,4-D 1 mg/L IAA 0.2 mg/L 蔗糖30 g/L 琼脂粉5 g/L;小苗的最佳生根培养基为MS NAA 0.2 mg/L mA 0.5 m/L 蔗糖30 g/L 琼脂粉5 g,L.40mg/L卡那霉素可以抑制叶盘的分化;20 mg/L卡那霉素可以抑制再生植株的生根.2种抑菌抗生素中,头孢霉素对叶片再生影响较大;而250 mg/L的羧苄青霉素能有效地抑制农杆菌菌株EHA105的生长,却对尾叶桉叶盘的芽分化影响不大,为适宜的抑菌抗生素.3种农杆菌LBA4404,EHA105,GV3101的菌液浸染桉树叶盘,统计其愈伤组织GUS染色率,以EHA105对外植体的浸染能力最强,达83.3%. 相似文献
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龙竹的组织培养 总被引：12，自引：1，他引：11
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。 相似文献
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花生幼叶芽诱导和植株再生研究 总被引：12，自引：2，他引：12
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。 相似文献
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Regeneration potentials in Gerbera jamesonii Bolus ex. Hook f. from tissues culture system was studied using leaf, petiole and root explants. In vitro regeneration, callus induction and root formation were optimized by manipulation of growth regulators during organogenesis. Various kinds of plant growth regulators such as 6-Benzylaminopurine (BAP), alpha-Naphthalene acetic acid (NAA), 2, 4-Dichlorophenoxyacetic acid (2,4-D), Indole-3-acetic acid (IAA), Indole-3-Butyric acid (IBA), N6-[2-Isopentenyl]adenine (2iP), Kinetin and Zeatin were used to initiate cultures. These plant growth regulators were added to Murashige and Skoog medium in different combinations and concentrations. Adventitious shoots were obtained from petiole explants cultured on Murashige and Skoog (MS) medium supplemented with 2.0 mg L(-1) BAP and 0.5 mg L(-1) NAA. Effectiveness of shoot regeneration medium, type of growth regulator used and duration of induction period were investigated. Leaf explants cultured on MS medium supplemented with 1.0 mg L(-1) BAP and 2.0 mg L(-1) 2, 4-D showed the best results for callus induction. Root explants were found to be non-regenerative in all experiments conducted. Petiole segment was identified as the best explant for regeneration of this species. Regenerated plants were rooted on Murashige and Skoog basal medium. Plantlets were then transferred to field with 75% survival rate. 相似文献
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以水莲石斛（Dendrobium Hibiki）幼嫩假鳞茎为外植体进行组织培养和快速繁殖研究。结果表明:利用75%乙醇结合0.1% HgCl2,以及适宜程序进行外植体消毒,成功率达92.50%;诱导腋芽的最适培养基为改良MS添加3.0 mg/L 6-BA和0.5 mg/L NAA,腋芽诱导率为91.90%;丛生芽增殖最适培养基为MS培养基添加5.0 mg/L 6-BA和0.5 mg/L NAA,平均增殖系数为2.77;生根壮苗最适培养基为1/2 MS+0.5 mg/L IBA+1.5 g/L活性炭+30 g/L蔗糖+100 g/L土豆泥,生根率100%,生根效果最好;体积比1∶1的植金石与椰壳混合基质适合于移栽,移栽成活率为95.56%。 相似文献
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M. ThiyagarajanP. Venkatachalam 《Industrial Crops and Products》2012,37(1):111-117
Stevia rebaudiana is a valuable medicinal plant species and it is being used for the treatment of diabetes. Currently, there is a high demand for raw material of this medicinal herb due to ever increasing diabetes disorder among the population. In order to meet the increased demand an efficient in vitro propagation of S. rebaudiana was established. Nodal explants collected from the field were cultured on MS basal medium fortified with different concentrations of BAP (0.5-3.0 mg/l) and KIN (0.5-3.0 mg/l) individually for shoot bud induction. In vitro derived nodal buds were cultured on MS medium supplemented with different concentrations (0.5-3.0 mg/l) of BAP and KIN for multiple shoot bud regeneration. In the second experiment, in vitro derived buds were placed on MS medium supplemented with different concentrations of BAP (0.5-3.0 mg/l) in combination with 0.5 mg/l IAA or IBA or NAA for shoot bud multiplication. The highest frequency (94.50%) of multiple shoot regeneration with maximum number of shoots (15.69 shoots/explant) was noticed on MS medium supplemented with 1.0 mg/l BAP. For large scale plant production, in vitro derived nodal bud explants were cultured on MS medium fortified with 1.0 mg/l BAP, in which about 123 shoots/explant were obtained after three subcultures on the same media composition. Elongated shoots (>2 cm) dissected out from the in vitro proliferated shoot clumps were cultured on half-strength MS medium containing different concentrations of NAA (0.1-0.5 mg/l) and/or MS medium fortified with various concentrations (0.5-2.0 mg/l) of auxins (NAA, IAA and IBA) for root induction. Highest frequency of rooting (96%) was noticed on half-strength MS medium augmented with 0.4 mg/l NAA. The rooted plantlets were successfully transferred into plastic cups containing sand and soil in the ratio of 1:2 and subsequently established in the greenhouse. The present in vitro propagation protocol would facilitate an alternative method for rapid and large-scale production of this important antidiabetic medicinal plant. 相似文献
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甘蔗健康种苗培育体系的建立 总被引：7，自引：0，他引：7
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。 相似文献
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Efficient plant regeneration of Saintpaulia ionantha (African violet) has been obtained in the present study. MS medium supplemented with 1.0 mg L(-1) IAA and 2.0 mg L(-1) Zeatin resulted in 100% shoot regeneration and induced the highest number of shoots (average 15.0 +/- 0.8 shoots per explant) after being cultured for 8 weeks. The above hormone combination was optimum for shoot regeneration. Most of Saintpaulia ionantha plantlets derived from tissue culture system could be hardened and transferred to the greenhouse conditions with 84.0 +/- 1.6% success rate. However, regenerated plantlets of Saintpaulia ionantha (even after 12-months-old) failed to flower. Morphological characters of regenerated plantlets of Saintpaulia ionantha were observed and compared with in vivo (intact) plants. Regenerated plantlets showed some differences in morphological characters, such as height and leaf size, texture and colour, but the plantlets showed no variation in leaf arrangement and leaf margin. However, the morphological characters of the regenerated plantlets were found to be unstable. 相似文献
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H．11648麻珠芽组织培养技术研究 总被引：3，自引：0，他引：3
用H．11648麻珠芽为材料进行组织培养，结果表明：在MS＋6-BA5mg／L＋NAA0．3mg／L＋白糖3％＋琼脂0．65％培养基中，诱导产生不定芽，其诱导率为72％，不定芽在MS＋6-BA3mg／L＋NAA0．1mg／L＋白糖5％＋琼脂0．8％培养基中，诱导产生丛芽，其诱导倍数是1．57，对丛芽进行继代培养、实现丛芽平均每代的增殖率228％。用MS＋NAA1．0mg／L＋IBA0．3mg／L＋活性炭0．2％＋白糖3％培养基诱导生根，其生根率为82％；将生根苗移至菇渣5：塘泥3：表土1：河沙1配方基质的苗床假植，移栽平均成活率为84％。该项技术的研究成功，为今后剑麻种苗的工厂化生产提供了技术支撑。也为开展剑麻的生物工程育种提供了技术基础。 相似文献
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In this study, in vitro organogenesis of Gladiolus grandiflorus cultivar pink corm segments were evaluated by culturing corm calli in modified MS medium supplemented with 3% sucrose and 0.7% agar with different concentration of BAP (0, 1, 2 and 4 mg L(-1) medium) and NAA (0, 0.5, 1 and 2 mg L(-1) medium) in factorial experiment of Completely Randomized Design (CRD). In order to obtain Gladiolus calli, corm segments (Aprox. 5 x 5 x 1 mm in size) were kept in modified MS medium (Murashige and Skoog, 1962) that was supplemented with 1 mg L(-1) 2, 4-D, 3% sucrose and 0.7% agar. The results showed that increasing the concentration of BAP from 0 to 2 mg L(-1) medium simulated plantlet regeneration but no significantly effect was obtained on shoot and cormel organogenesis between 2 and 4 mg L(-1) BAP concentration in medium. Increasing of NAA content in media without BAP developed rootlet significantly. Interaction results showed that increasing BAP content against decreasing of NAA concentration stimulates the shoot and cormel proliferation. 相似文献
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以白天开花的平潭月见草种子为外植体，进行月见草的组织培养与快繁技术研究。结果表明，选择成熟度较高的种荚，在无菌条件下取出种子，用75％酒精处理30s，然后用0．1％升汞灭菌15min，最后用无菌水荡洗5遍，能达到较好的灭菌效果；用滴管滴植后，再用镊子栽植的接种方式较佳；最适宜的试管苗增殖培养基为Ms＋2．0mg·L^-16-BA＋0．1mg·L^-1NAA固体培养基；壮苗生根培养基以固体培养基1／2MS＋0．1mg·L^-1NAA为最佳培养基；蛭石：泥炭土：河沙=1：2：1的混合基质为最佳移栽基质，成活率可达93．33％。 相似文献
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海巴戟天的离体快速繁殖(简报) 总被引：1，自引：0，他引：1
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。 相似文献
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杜鹃红山茶离体快速繁殖 总被引：2，自引：0，他引：2
以杜鹃红山茶实生小苗为试验材料,探讨离体快速繁殖的方法。结果表明:茎段外植体在MS+BA 1 mg/L+IBA 0.01 mg/L+GA3 10 mg/L的培养基上培养60 d,侧芽萌发率高达68%;将这些萌发的侧芽连同原来的茎段外植体移至添加BA 0.2～0.4 mg/L的培养基培养1个月,74%的侧芽能够继续生长并形成丛生芽;再将丛生芽移至1/2 MS+IBA 4 mg/L+0.1%活性炭的培养基上培养1个月,得到大量伸长的芽条;将芽条切离母体后插植于1/2 MS+IBA 8 mg/L的培养基,60 d后生根率达到90%。通过以上过程繁殖得到的小苗质量良好,移栽1个月后的成活率可达90%。 相似文献
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Plant regeneration from tuber discs of potato (Solanum tuberosum L.) using 6-benzylaminopurine (BAP)
Summary Shoots, roots and callus were formed from tuber discs of potato, cultivar Désirée, when grown in vitro on the basal medium
of Murashige & Skoog (1962) (MS) supplemented with 2,4-D and/or BAP. Callus was formed in MS medium with 1 mg l−1 BAP plus 0.5 mg l−1 2,4-D, callus and roots were formed in MS with 1 mg l−1 BAP plus more than 0.5 mg l−1 2,4-D and shoots were formed directly on tuber discs cultured on MS medium with 1 mg l−1 BAP without the addition of 2,4-D.
Nodules produced at the explant surface after the 4th week increased in size following subculture onto the same medium (MS+BAP
alone), and 2 to 6 shoots developed from each nodule. After 9 weeks total time in culture, these shoots were excised and transferred
as cuttings to MS medium without growth regulators, after which roots developed and plantlets were formed.
A histological study of the explants at the sites of nodule formation indicated that the shoots developed from meristematic
zones initiated within small outgrowths of tissue similar to those occuring in adventive organogenesis but the presence of
shoot and root meristems associated with the same axis suggests the formation of somatic embryos. 相似文献