共查询到20条相似文献，搜索用时 296 毫秒
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用苦丁茶萌蘖芽茎段进行离体快速繁殖，外植体采用０．１％氰霉素预处理，可有效地提高消毒效果。芽增殖培养基采用ＭＳ＋６－ＢＡ１．５ｍｇ／Ｌ＋ＫＴ２．０ｍｇ／Ｌ，ｐＨ调整为５．０有效高的增殖系数，生根培养基为１／２ＭＳ＋ＩＢＡ０．５ｍｇ／Ｌ＋ＮＡＡ０．６ｍｇ／Ｌ，能有效促进小芽生根，其移栽成活率可达９０％以上。 相似文献
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普拉索芦荟组织培养技术研究 总被引：1，自引：1，他引：1
取普拉索芦菩嫩茎作外植体，培养于附加不同种类和激素浓度的ＭＳ或改良的ＭＳ培养基上，在附加 ６－ＢＡ１．５ ｍｇ／Ｌ时，丛生芽诱导效果最佳，萌发数量最多；在附加 ６－ＢＡ１．０ｍｇ／Ｌ＋ＮＡＡ０．３ｍｇ／Ｌ时，丛生芽生长最好，芽长且健壮，；在附加Ｉ ＡＡ０．２ ｍｇ／Ｌ时，生根效果最佳；当苗高 ３ ｃｍ以上，根长达２ ｃｍ以上时，开盖 ３ ｄ移入温室（１０～１６℃），炼苗 ３ ｄ后，移栽于蛙石；河沙；腐质土为０．５：１：１．５的混合基质的土壤中，成活率达９１．３％。 相似文献
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相思杂种——莞屏1号离体快速繁殖的研究 总被引：5，自引：1，他引：4
对相思杂种——莞屏１号离体快速繁殖各个培养程序的培养基进行筛选，从而确定适合快速繁殖的最优培养基组分。试验结果表明，最适合诱导不定芽分化与增殖、不定芽伸长以及诱导生根的培养基分别为：ＭＳ＋６ＢＡ１．０ｍｇ／Ｌ＋ＫＴ１．５ｍｇ／Ｌ＋蔗糖３％、ＭＳ＋蔗糖３％、ＭＳ＋ＩＢＡ１．０ｍｇ／Ｌ＋ＮＡＡ０．５ｍｇ／Ｌ＋蔗糖２％。文中还对外植体的分段消毒法和试管苗移栽技术问题进行了探讨 相似文献
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黑荆树离体微型繁殖的研究 总被引：1，自引：0，他引：1
运用统计分析法，对黑荆树微型繁殖各个培养程序的培养基进行筛选，从而确定适合离体快速繁殖的最优培养基组分。试验结果表明，最适合不定芽培养的培养基配方为ＭＳ＋ＢＡＰ２．０ｍｇ／Ｌ＋ＮＡＡ０～０．１ｍｇ／Ｌ＋酪蛋白水解物２００ｍｇ／Ｌ＋蔗糖３％；诱导枝芽生根的培养基为ＭＳ＋ＩＢＡ０．５ｍｇ／Ｌ＋蔗糖２％。试验还证实固体培养基诱导生根的效果比液体培养基好。 相似文献
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对白刺离体培养进行研究的结果表明：腋芽分化最适培养基为ＭＳ＋ＢＡ２．０ｍｇ／Ｌ＋ＩＢＡ０．５ｍｇ／Ｌ,继代生根最适培养基为１／２ＭＳ＋ＩＢＡ０．６ｍｇ／Ｌ、生根率达１００％;２０日龄试管苗移栽成活率达９５％以上。 相似文献
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用蓝桉（Ｅｕｃａｌｙｐｔｕｓｇｌｏｂｕｌｕｓ）离体芽器官诱导培养，分化形成丛生芽，年繁殖系数３￣（１２）。０．１～０．５ｍｇ／Ｌ的６－ＢＡ或０．５～０．８ｍｇ／Ｌ的ＫＴ诱导外植体（带节茎段）腋芽萌动的效果最佳，诱导率分别达８０．３％和８１．５％。１．５～２０ｍｇ／Ｌ的６～ＢＡ或２０～２．５ｍｇ／Ｌ的ＫＴ分别与０．５～１．０ｍｇ／Ｌ的ＮＡＡ组合，对于促进腋芽分化形成丛生芽及继代培养中芽的增殖具有最佳效果。培养基中的无机盐浓度、蔗糖含量对蓝桉试管苗的生根具有显著影响；ＩＢＡ促进蓝桉试管苗的生根。至目前为止，在１／２ＭＳ无机盐培养基＋ＩＢＡ１．２～１．４ｍｇ／Ｌ＋Ｓ５ｇ／Ｌ中诱导生根，生根率最高可达２６．４％。 相似文献
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卷荚相思组培工厂化育苗技术 总被引：3，自引：0，他引：3
通过对卷荚相思组培工厂化育苗技术研究的阐述,总结了卷荚相思组培工厂化育苗最优培养基配方为:诱导培养基为改良MS+6-BA 0.3 mg/L+KT 0.5 mg/L+NAA 0.3 mg/L+蔗糖30 g/L+卡拉胶8 g/L,继代增殖培养基为改良MS+6-BA 0.8 mg/L+KT 0.3 mg/L+NAA 0.6 mg/L+蔗糖30 g/L+卡拉胶8 g/L,生根培养基为1/2改良MS+NAA 0.5 mg/L+蔗糖20 g/L+卡拉胶8 g/L,pH值为5.8。用此培养基配方进行卷荚相思组培工厂化育苗其诱导率可达70%,有效芽增殖倍数可达3倍以上,生根率可达95%以上。 相似文献
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In vitro regeneration of complete plants from nodal single-bud segments of 2-year-old Australian Cedar (Toona ciliata) trees were obtained under defined nutritional and environmental conditions. Explants were dissected from plants obtained by germination of seeds and growth in pots in a greenhouse. The best medium for shoot regeneration was that of Murashige and Skoog at 1/4 strength with 3% sucrose (1/4 MS), supplemented with 0.1 mg/l IBA and 0.5 mg/l BAP. Rooting of regenerated shoots was observed in MS medium with 0.1 mg/l IBA. Using mature tree material was more difficult. Forced flushing was used to induce shoot development on branches of a 10-year-old tree. Nodal segments of these epicormic shoots formed shoots in vitro on 1/4 MS + 0.01 mg/l IBA + 5 mg/l BAP, but rooting was never observed. 相似文献
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文章报道黄金香柳的组织培养和快速繁殖试验。结果表明：以黄金香柳嫩茎作外植体进行培养,不定芽诱导率高,经连续3次培养不定芽增殖倍数可达7.9～10.7。适宜黄金香柳丛芽快速增殖的培养基配方为MS＋6-BA 0.5 mg/L＋NAA 0.01 mg/L＋蔗糖30 g/L,一次继代培养时,平均每瓶无菌材料可提供45.5个枝芽（≥1 cm）用于转接生根。诱导植株生根的最佳培养基配方为MS＋IBA 1.0～1.5 mg/L＋蔗糖15 g/L,适宜的培养时间为21～25 d,生根率可高达96%以上。移植的试管植株90%以上存活。 相似文献
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IntroductionTaxolisacompIexditerpenoidsecondaryproductofthegenushauSthatwasapprovedfortreatmentagainstovarianandbreastcancersandshowsprom-iseagainstothercancers.DuetotherelativescarcityofthefewnaturaIresourcesandthelowyieldoftaxol,thesupplyoftaxolisrestricted,limitingexpansionofcIinicaItrialsandtreatmentavailabiIity.lnterestinalternativemethodsfortaxoIproductionhasbeenintensifying.CellcuItureprovideaconvenientsystemforstudyingthebiosynthesisoftaxol.Itmaybeaviablealternativefortaxolproduct(… 相似文献
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A reliable in vitro regeneration procedure for Populus tomentosa is a prerequisite for its trait improvement through genetic transformation. We established a systematic protocol for indirect regeneration of P. tomentosa using in vitro petioles of Chinese poplar cultivar ‘fasta-3’. A high frequency of callus induction (>97 %) was obtained from isolated petioles cultured on the modified 1/2MS basal medium supplemented with 0.5 mg/L ZT and 1.0 mg/L NAA, and the tested calli were subsequently plated on 1/2MS basal medium supplemented with 0.25 mg/L BA, 0.25 mg/L ZT, 0.25 mg/L NAA, 0.01 mg/L TDZ, and 0.5 mg/L KT for efficient regeneration of shoots after being cultured for 6 weeks. The regenerated shoots were vigorously rooted on the tested media supplemented with 1.0 mg/L IBA and 0.5 mg/L NAA. These results can facilitate genetic transformation of P. tomentosa for trait improvements in future. 相似文献
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以增殖率较低的21号黑木相思无性系继代苗为材料，希望通过培养基调节，提高生产效率，为推动规模化发展打下基础。通过单因子试验，以苗高、新芽数、愈伤质量和苗木生物量为衡量指标，筛选出最佳的大量元素、6-BA、IBA及糖用量。结果表明：培养基中大量元素含量对愈伤质量和生物量影响显著，以MS大量最好；6-BA含量对苗高、新芽数、愈伤质量都产生显著影响，以不加6-BA苗高最高，6-BA 0.5 mg/L 获得最多5.4个新芽/苗，6-BA 1.0 mg/L愈伤质量最大，IBA浓度只对新芽数产生显著影响，以IBA 0.5 mg/L新芽数最多，糖对所有指标产生显著影响，当糖20 g/L时，苗木生长最高，糖20～30 mg/L时，新芽数、愈伤质量和生物量最大。 相似文献
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以心叶球兰叶片为外植体,愈伤组织诱导和继代增殖培养基MS+6-BA2.0mg.L-1+NAA0.5mg.L-1+2,4-D1.0mg.L-1+GA1.0mg.L-1+白糖3%,诱导的愈伤组织多,生长旺盛,增殖倍数为2～3倍;丛芽诱导培养基MS+KT0.5mg.L-1+NAA0.5mg.L-1+GA1.0mg.L-1+白糖3%,芽的诱导率为79.3%;在丛芽增殖及复壮培养基1/2MS+IBA1.0mg.L-1+白糖2%上,有20%～30%玻璃化丛芽转为绿色苗,玻璃化单芽经复壮培养长成绿色苗;诱导生根培养基为1/2MS+IBA0.5mg.L-1+白糖2%,玻璃化生根率为56.4%,淡绿色苗生根率达91.1%。瓶苗移栽基质泥炭土∶珍珠岩∶甘蔗渣(1∶1∶1)的成活率最高,达91.4%。 相似文献
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Juniperus thurifera L.is an endemic Cupres saceae from the Aure`s Mountains of north eastern Algeria and endangered,in part,due to the scarcity of viable seeds It is threatened by other abiotic factors and the lack of an effective management strategy will increase its risk o extinction.The dearth of information on its in vitro regeneration impedes its application in forest managemen programs.We therefore developed a micropropagation protocol using microcuttings with auxiliary buds.Cuttings were grown on different combinations of media supplemented with plant growth regulators at different concentrations.The highest number of shoots and branches regenerated from original shoots was obtained on Woody Plant Medium(WPM)supplemented with 6-benzylaminopurine(BAP)(0.5 mg L-1)and 2,4-dichlorophe noxyacetic acid(2,4-D)(0.25 mg L-1).The best elongation of shoots was achieved with WPM supplemented with0.5 mg L-1of BAP and 0.25 or 1 mg L-1 of 2,4-D.On the second subculture,shoots had a higher number of branches than those of the first.The highest rooting rate,38.8%,was obtained with shoots cultured in 1/2 Murashige and Skoog(MS)medium supplemented with 5.0 mg L-1each of indol-3-butyric(IBA)and naphthalene acetic acid(NAA).Similarly,the highest root numbers and lengths were produced on 1/2 MS medium supplemented with IBA and NAA(5.0 mg L-1each).During transfer to acclimatization,rates of plant losses of 50% occurred.The second part of the experiment showed that the best shoot callusing was on WPM supplemented with BAP and 2,4-D,with either the combination 0.5+0.25 or 0.25+0.25 mg L-1.The results of this research provide a starting point for further studies on in vitro regeneration of J.thurifera for the sustainable management of its unique ecosystem in the Mediterranean basin. 相似文献