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新疆香梨试管苗最佳生根培养基研究 总被引：9，自引：0，他引：9
在确定IAA作为香梨(PyrussinkiangensisYü)试管苗生根最适生长调节剂和浓度基础上,研究了NH4+、NO3-、K+、Ca2+、Mg2+的生根效应。发现由NH4NO3、KNO3、Ca(NO3)2、MgSO4四种化合物不同浓度组成的12个处理对试管苗的生根率、根生物量和根长等均产生显著影响。处理间最高与最低根长相差23.38cm,生根率相差53.13%。最高生根率达96.88%,比半量MS培养基(对照)增加15.63%,并且生根指数明显提高。认为提高香梨等难生根木本植物生根效率,在选配适宜生长调节剂同时,应注意大量元素对试管苗的生根效应。 相似文献
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薯蓣茎段组织培养的研究 总被引：1，自引：0，他引：1
以薯蓣的单芽茎段为外植体,采用不同种类、浓度的植物生长调节剂进行离体培养。研究结果表明,以MS为基本培养基(蔗糖30g/L、琼脂6g/L),附加0.2 mg/L BA 0.01 mg/L NAA作为芽诱导培养基效果最好,诱导率高达83.2%,芽苗长势良好,叶片较大,叶色浓绿;继代增殖培养以MS 0.5 mg/L BA 0.05 mg/L NAA为最佳培养基,培养25d后增殖系数达4.38;诱导生根的最佳培养基为1/2 MS 0.2 mg/L IBA,生根率为86.7%,组培苗根系粗壮,长势旺盛。 相似文献
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余甘子下胚轴离体培养中的器官形成与植株再生(英文) 总被引：1，自引：0，他引：1
以余甘子(phyllanthusemblicaL.)下胚轴为外植体,通过器官发生途径诱导形成不定芽,探讨不同激素组合对下胚轴器官发生和植株再生的影响,以期建立有效的再生体系,为以后的遗传转化研究奠定基础。结果表明,在附加0.1μmol/LNAA、5μmol/LBA和30g/L蔗糖MS培养基上培养,5周后不定芽再生频率达87.5%,平均每个外植体再生芽数为9.7个,为最佳组合。将分化的不定芽转移至含有10μmol/LIBA的MS培养基上,5周后生根,发育成健康的植株,生根率在29.2%。 相似文献
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草莓热处理结合茎尖脱毒技术研究 总被引：4，自引：0，他引：4
以草莓品种"红颜"、"章姬"为试材,采用"茎尖培养+热处理"方法获得草莓脱毒组培苗,并建立其组培快繁体系。结果表明:茎尖诱导培养最佳培养基配方为MS+6-BA 0.5mg/L+NAA 0.02mg/L。在继代与增殖培养阶段,初期MS+6-BA 0.5mg/L+NAA 0.05mg/L增殖效果最好,后期培养基MS+6-BA 0.2mg/L+NAA 0.01mg/L有利于壮苗。生根阶段的最佳培养基配方,以1/2MS+IBA 0.1mg/L生根效果最好,生根率为100%。练苗移栽的基质为珍珠岩∶蛭石为1∶1,移栽成活率可达95%以上。 相似文献
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影响苹果试管嫁接苗培育的因素 总被引：1，自引：0，他引：1
用苹果试管苗Ｍ２６作砧木，‘Ｇａｌａ’作接穗，成功地获得试管嫁接苗。嫁接苗在ＭＳ液体纸桥培养基上的生长量与嫁接成活率显著高于ＭＳ固体培养基。但是，液体培养基导致砧木基部膨大，形成玻璃苗。随ＢＡＰ浓度升高，嫁接部位愈伤组织形成快、成活率高，接穗生长量明显增加。过高浓度的ＢＡＰ（≥０．８ｍｇ·１~(-１)），诱导砧木侧枝大量形成、砧木基部膨大、产生玻璃苗，并且显著降低砧木的生根力。试管嫁接苗建立阶段最适的ＢＡＰ浓度为０．４ｍｇ·１~(-１)。试管嫁接苗的生根力随ＩＢＡ浓度升高而显著提高，在１．０ｍｇ·１~(-１)浓度时达最适水平。ＩＢＡ浓度对试管嫁接苗接穗生长的影响与生根力是一致的。 相似文献
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不同基因型欧洲梨离体繁殖研究 总被引：14，自引：0，他引：14
试验用12个基因型欧洲梨茎尖作外植体,以MS作基本培养基进行高体繁殖试验。结果表明,不同基因型外植体增殖和形态分化显著不同。其中Koporeka仅经过28d便获得了5.6倍的增殖。生根培养14d后,生根率达88.65%,每植株生根2.86条。Vila连续培养60d,仅有少量的外植体形成了愈伤组织,无芽和根分化。参试的12个基因型,只有5个类型可以进行规模离体繁殖。 相似文献
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In vitro propagation protocol for Dendrobium hybrids Sonia 17 and 28, two highly priced commercial cut flower cultivars through direct organogenesis from in vitro derived foliar explants was established. Rapid clonal propagation was achieved by subsequent induction of protocorm-like bodies (PLBs) and its conversion to shoots. No significant differences were observed in the induction of direct shoots, shoot multiplication, PLBs formation and subsequent shoot development and rooting of shoots between the two cultivars. Leaf explants from flower stalk node derived shoots cultured on half-strength Murashige and Skoog (MS) medium supplemented with 44.4 μM N6-benzyladenine (BA) developed more than seven shoots per explant. The isolated shoots transferred onto the same medium induced more than eight PLBs from the base within 60 days, which upon transferral to fresh medium having the same level of BA facilitated rapid proliferation. More than 200 PLBs were yielded from fifth subculture. Half-strength MS medium containing 6.97 μM kinetin (Kn) facilitated conversion of more than 90% PLBs to shoots. PLBs exhibited proliferation without decline up to the 15th subculture. Half-strength MS medium with 2 g l−1 activated charcoal was the best for in vitro rooting. Plantlets of the hybrids exhibited more than 80% ex vitro establishment. 相似文献
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紫皮石斛组培技术的优化研究 总被引：1，自引：0，他引：1
以紫皮石斛种子和茎段作为外植体,研究芽苗增殖培养、生根培养及组培苗优化条件。结果表明:种子最适宜作为快繁的外植体,种子通过无菌小芽苗、芽苗增殖、壮苗生根的途径再生成完整植株;并探索出适宜的培养基配方:初代诱导培养基为1/2MS+1mg/L BA+0.5mg/L NAA,种子直接萌发长成大量绿色、长势整齐的无菌小芽苗;增殖培养基为MS+2mg/L BA+0.5mg/L NAA+5%马铃薯汁+5%香蕉泥,芽苗增殖倍数高,达到4.6倍,且长势好、芽苗粗壮;生根壮苗培养基为1/2MS+0.5mg/L NAA+10%香蕉泥+0.1%活性炭,生根苗平均根数和根长达到了最佳状态,根系发达,苗高、健壮,叶色浓绿。培养基中适宜的琼脂浓度为6g/L,增殖倍数较高,植株直立,叶片也不弯曲。 相似文献
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《Scientia Horticulturae》2002,93(2):143-148
Actively growing shoots of potted greenhouse-grown strawberry tree (Arbutus unedo L.) were initially sterilised and established in basal woody plant medium containing 11.1 μM BA. Optimum shoot proliferation was achieved on a basal WPM containing MS vitamins, sucrose, agar and 22.2 μM BA. Microshoots rooted successfully in basal in vitro medium containing 10 μM IBA or IAA, but their survival rate during acclimatisation was low. Addition of a mixture 1 part peat:4 parts perlite in the basal in vitro rooting medium (1:1 v/v) containing 10 μM IAA resulted in high rooting percentage and plantlets with branched roots. These plantlets were successfully acclimatised. This novel rooting medium can be exploited further due to its potential in commercial applications. 相似文献
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以红叶石楠"红罗宾"半木质化幼嫩枝条为外植体,MS作为基础培养基,通过改变激素浓度配比,探究不同激素配比对"红罗宾"茎段腋芽诱导、茎芽苗增殖及生根的影响;以不同的栽培基质分别对生根幼苗进行炼苗移栽,探究红叶石楠移栽的最适基质组成。以期为红叶石楠工厂化育苗体系的建立提供参考依据。结果表明:MS+2.0 mg·L^-1 6-BA+0.25 mg·L^-1 NAA为腋芽诱导的最佳培养基,诱导率为76.7%;MS+2.5 mg·L^-1 6-BA+0.1 mg·L^-1 NAA为最佳增殖培养基,35 d增殖系数达5.12;红叶石楠试管苗最适生根培养基为1/2MS+0.8 mg·L^-1 NAA,45 d生根率高达90%;1/5红壤+4/5腐殖土的移栽基质,成活率达100%。 相似文献
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橡胶草高频再生体系的建立 总被引：1，自引：0，他引：1
以橡胶草叶片为外植体,研究了消毒时间、外源激素等因素对外植体成活率、不定芽的诱导、伸长和生根的影响。结果表明:用0.1%的升汞处理7min为最佳消毒方法,最佳的再生培养基为MS+1.5mg/L 6-BA+0.1mg/L NAA,平均诱导率为97.3%,芽伸长培养基为MS+2.0mg/L 6-BA+0.02mg/L NAA+0.4mg/L GA3,生根培养基为1/2MS+0.2mg/L NAA,生根率为100%,所获得的组培苗生长健壮且移栽成活率高,最终摸索出了橡胶草最佳的再生体系。 相似文献
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Takuya Tetsumura Yasuyo Matsumoto Makiko Sato Chitose Honsho Kensuke Yamashita Haruki Komatsu Yasuhiro Sugimoto Hisato Kunitake 《Scientia Horticulturae》2008
Murashige and Skoog medium (MS), woody plant medium (WPM), and a mixture of equal parts of MS and WPM (MW) were compared for in vitro shoot proliferation and rooting of four highbush blueberry (Vaccinium spp.) cultivars. During the multiplication stage, the shoots on WPM showed worse growth than the other shoots. The MW produced the best shoot growth. The shoots on MS grew well but tended toward hyperhydricity in the multiplication stage, especially in the case of ‘Bluecrop’ shoots. Rooting was worst in the shoots multiplied on WPM, while the best rooting percentage of ‘Bluecrop’ shoots was obtained on MS, and that of ‘O’Neal’ on MW. The rooted shoots developed a good root system and were easily acclimatized after potting. 相似文献
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以濒危植物太行花顶芽为试材,采用植物组织培养方法,研究了植物生长调节剂对太行花无菌苗丛生芽诱导和生根的影响,以期为太行花快速繁殖、资源保护和园林应用提供参考依据。结果表明:在MS+6-BA 0.6 mg·L-1+IBA 0.15 mg·L-1培养基中,太行花丛生芽增殖系数较高且无玻璃化现象,为优化的增殖培养基;在MS+IBA 1.5 mg·L-1培养基中太行花无菌苗生根率为100%,生根系数也最高,可达4.96,为优化的生根培养基。 相似文献
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百子莲组织培养及植株再生研究 总被引：3，自引：0，他引：3
以百子莲花蕾为外植体,成功建立了其离体再生体系。结果表明:百子莲花蕾在诱导培养基MS+6-BA 4mg/L+NAA 0.1mg/L可分化出不定芽;在MS+6-BA 2mg/L+NAA 0.2mg/L+GA3 0.1mg/L培养基上,百子莲不定芽增殖倍数可达到5.07;百子莲不定芽适宜的生根培养基为1/2MS+NAA 0.1mg/L+AC 0.1g/L,生根率可达100%,且百子莲组培苗移栽1个月后成活率可达到95%以上。 相似文献
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A. T. K. Corke 《The Journal of Horticultural Science and Biotechnology》2013,88(3):197-200
SummaryWe have developed a two-step procedure for rooting of tea microshoots in vitro. The effectiveness of different auxin treatments for root formation was found to differ. Among the auxins tested, 25 μM -naphthalene acetic acid (NAA) gave the best results, with 100% rooting, compared to 25 μM indole-3-butyric acid (IBA) or 25 μM indole-3-acetic acid (IAA), which induced 17% and 58% rooting, respectively. Incubation of tea microshoots on 0.33 Murashige and Skoog (MS) medium, supplemented with 25.0 μM NAA or 175.0 μM IBA for 10 d, followed by transfer to auxin-free 0.33 MS medium resulted in 100% rooting, whereas 50.0 μM IAA induced 91.7% rooting. Besides the different auxin treatments, the strength of the MS medium, the duration of incubation of microshoots in auxin-containing medium, the sucrose concentration, the gelling agent, the pH of the medium, the incubation temperature, the light intensity, and the quality of the shoots also played a significant role during in vitro rooting of micropropagated tea shoots. Among the combinations tested, the most effective results were obtained when green microshoots were incubated on 0.33 MS medium supplemented with 25.0 μM NAA, 50.0 mM sucrose, pH 5.5, gelled with 0.2% (w/v) PhytagelTM for 10 d at 25° – 30°C at a light intensity of 40 μmol m–2 s–1, followed by transfer of shoots to auxin-free 0.3 MS medium. This resulted in 100% rooting and, on average, 11 long roots were formed per shoot. Anatomical changes during adventitious rooting of micropropagated tea shoots in vitro were also studied to understand the process of rooting. 相似文献
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以北美红杉1年生带芽茎段为外植体,通过基本培养基筛选和不同植物生长调节剂水平对比试验得到北美红杉组织培养的不定芽诱导、增殖、生根等生长阶段的优化配比培养基,以期建立北美红杉高效的快繁体系。结果表明:确定最佳消毒方法为75%乙醇消毒30 s,无菌水冲洗2次,再用0.1%氯化汞消毒处理10 min,无菌水冲洗4次;最佳不定芽诱导培养基配方为MS+6-BA 1.0 mg·L-1+NAA 0.10 mg·L-1+蔗糖30 g·L-1+琼脂6 g·L-1,不定芽诱导效果最好,诱导芽率高达2 153.3%,且芽生长健壮;最佳不定芽增殖培养基配方为MS+6-BA 1.0 mg·L-1+NAA 0.10 mg·L-1+蔗糖30 g·L-1+琼脂6 g·L-1,增殖系数高达15.8;最佳生根培养基配方为1/2MS+KT 1.5 mg·L-1+IBA 1.0 mg·L-1+蔗糖30 g·L-1+琼脂6 g·L-1,其生根率达90.0%,根多且粗长,植株高大健壮;最佳移栽基质为V炉渣∶V原土∶V腐殖土=1∶1∶1,植株成活率达91.7%。 相似文献