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1.
Summary Multiple shoots buds were obtained successfully from shoot tips of Acacia saligna by placing explants into solidified Murashighe & Skoog (1962) medium (MS medium) supplemented with 5.0 to 9.0 mg/L BAP. Sequential culture treatment was highly effective for shoot elongation using MS medium containing 0.3 mg/L BAP and 0.2 mg/L IAA. The shoots rooted best on MS medium supplemented with 2.0 mg/L IBA. Plantlet survival after transfer to soil was more than 90%. The shoot proliferation method described could be used for the mass clonal propagation of selected genotypes. 相似文献
2.
Mahipal S. Shekhawat Narpat S. Shekhawat Harish Kheta Ram Mahendra Phulwaria Amit Kumar Gupta 《Journal of Crop Science and Biotechnology》2011,14(2):133-137
An in vitro propagation method for female plants of Momordica dioica (Roxb.) has been established. The nodal segments were harvested and the cut ends of the explants were sealed with wax and
then surface sterilized and cultured. Bud breaking occurred on Murashige and Skoog’s (MS) agar-gelled medium + 2.0 mg L−1 6-Benzylaminopurine (BAP) + 0.1 mg L−1 Indole-3 acetic acid (IAA). The cultures were amplified by passages on MS medium supplemented with 1.0 mg L−1 BAP + 0.1 mg L−1 IAA. Further, shoot amplification (29.2 shoots per vessel) was achieved by subculturing of in vitro regenerated shoot clump on MS medium + 0.5 mg L−1 BAP + 0.1 mg L−1 IAA. The micropropagated shoots were subsequently transferred for root formation on half-strength MS medium + 2.0 mg L−1 Indole-3 butyric acid (IBA) with 89% success rate. The in vitro-regenerated shoots were also rooted ex vitro with 34% success. These plantlets were hardened in the greenhouse and transferred to the field. The established protocol
is suitable for true to type cloning of mature female plant of M. dioica. 相似文献
3.
Protocols of plant regeneration have been developed for Brassica carinata for creating somaclonal variation for plant type and adaptability, so that this species can fit into cropping systems in Indian agriculture. The response of cotyledonary and stem explants was assessed for callus induction and shoot regeneration on MS and B5 basal media containing different combinations of auxin and cytokinin concentrations. MS medium supplemented with BA and NAA favoured callus induction. Supplementing MS with combinations of BA and IAA, as also with BA alone, regenerated shoots from the ex pi ants with a high frequency. The frequency of shoot regeneration and the mean number of shoots per explant were higher in cotyledons than in stem explants on identical growth regulator combinations. On B5 medium, supplemented with BA (2 mg/l) and IBA (0.4 mg/l), compact callus was produced which regenerated shoots on transfer to medium containing BA (0.8 mg/l). Genotypic differences among carinata accessions for regeneration were also observed. 相似文献
4.
小滨菊组培快繁体系的初步建立 总被引：1，自引：0，他引：1
以多年生沼生植物小滨菊（Leucanthemella linearis (Matsum.) Tzvel.）的带芽茎段为外植体,开展了小滨菊组培快繁体系建立的研究。结果表明,小滨菊茎段的最佳启动培养基为MS+0.5 mg?L-1 6-BA + 0.5 mg?L-1 NAA,启动率达到80%;最佳继代培养基为MS+0.5 mg?L-1 6-BA+0.2 mg?L-1 NAA,增殖效果良好,出芽指数平均达到9.2;最佳生根培养基为1/2MS+0.3 mg?L-1 NAA,生根率85.72%,根系生长状态良好。小滨菊茎段诱导愈伤组织的最佳培养基为MS+0.2 mg?L-1 6-BA+0.5 mg?L-1 NAA,愈伤组织分化率最高的培养基为MS+1.0 mg?L-1 6-BA+0.2 mg?L-1 NAA,分化率可达70.00%。 相似文献
5.
白皮松组织培养研究 总被引：2，自引：2，他引：0
为建立高效的再生体系,以白皮松成熟胚,子叶为外植体,经过初代培养和继代增殖培养,研究了不同植物生长调节剂种类及浓度、活性炭、GA3在组培各阶段的作用。结果表明：适合子叶诱导芽的培养基为MS+6-BA 3 mg/L+NAA 0.1 mg/L+TDZ 0.01 mg/L,适合胚诱导芽的培养基为MS+6-BA 2 mg/L+NAA 0.1 mg/L;适宜的继代培养基为MS+NAA 0.05 mg/L;以预处理胚（切除下胚轴）为外植体适宜生根培养基为1/2MS+IBA 0.3 mg/L;活性炭对芽增殖无显著作用,随活性炭浓度提高增殖系数有下降趋势;适量的活性炭和GA3可有效促进芽伸长。 相似文献
6.
香石竹离体组织培养特性的研究 总被引：2，自引：0，他引：2
本实验以香石竹当年生带腋芽的茎段为外植体,研究它的诱导分化、继代增殖、生根培养各阶段离体培养的特性.结果表明:附加1.5mg/LBA和0.1 mg/LNAA的MS培养基适合腋芽的萌发诱导,诱导率达100%;附加0.5mg/LBA和0.1 mg/L NAA的培养基适合香石竹的增殖,增殖率达340%;附加1.0mg/L NAA的培养基为适宜的生根培养基. 相似文献
7.
8.
黄花倒水莲(Polygala fallax Hemsl)组培快繁技术研究 总被引：1，自引：1，他引：0
以当年生黄花倒水莲幼嫩带腋芽茎段作为外植体,开展组织培养试验研究.结果表明:最佳外植体诱导培养基为1/2 MS+ BA 2.0 mg/L+ NAA 0.1 mg/L,诱导率可达95.1％;最佳增殖培养基为WPM+ BA 1.5 mg/L+ NAA0.1 mg/L,增殖系数为6.12,周期为25 d,不定芽生长状况好;最佳生根培养基为1/2 WPM+ IBA 0.1 mg/L+ ABT0.4 mg/L,生根率为95.67％;以泥炭土∶黄泥土∶珍珠岩(2∶1∶1)为移栽基质,移栽成活率可达92.6％,苗木长势好,叶色绿. 相似文献
9.
‘黑珍珠’番茄植株再生体系的研究 总被引：2，自引：1，他引：1
为了研究‘黑珍珠’番茄植株再生,以‘黑珍珠’番茄幼嫩叶片为外植体诱导愈伤组织,通过愈伤组织诱导培养、愈伤组织分化培养、不定芽增殖培养、生根培养和试管苗移栽,建立高效快速的‘黑珍珠’番茄再生体系。结果表明：最适宜的诱导叶片愈伤组织的培养基为MS+ 1.0 mg/L 6-BA+ 0.1 mg/L NAA,叶片外植体愈伤组织诱导率最高可达98.2%;诱导出的愈伤组织在MS+ 1.5 mg/L 6-BA+ 0.2 mg/L IBA培养基上能很好的分化出不定芽;MS+4.0 mg/L KT+ 0.01 mg/L IBA 培养基可实现不定芽芽增殖;最适宜的生根培养基为1/2MS+ (0.05~0.08) mg/L NAA,试管苗移栽成活率达92%。 相似文献
10.
Plant regeneration was achieved from immature embryo-derived, calli of Pisum sativum. Embryo axes were separated from cotyledons and cultured on different media containing BAP and NAA until plantlet regeneration. Rooting of the plantlets was obtained on MS medium supplemented with 2 mg/1 IBA. Frequency of regeneration was shown to be under the influence of the genotype. Histological preparations showed de novo origin of the shoots via organogenesis. Out of 2C regenerated plantlets, 11 were diploids (2n = 14) arid 9 aneusomatic (chromosomal mosaics) with chromosome numbers ranging from 12 to 16. 相似文献
11.
Summary Protocols for plant regeneration from cotyledon explant and anther cultures of Sinapis alba have been developed for creating doubled-haploids and somaclonal variation. Among the several cultivars tested in this study, only Arda responded well to in vitro plant regeneration both from anther-as well as cotyledoncultures. Multiple shoot formation in cotyledon explants, which always followed a brief callusing phase, was found to be the best on MS medium with ZEA (1.0mg/l) and NAA (0.1mg/l). Regeneration frequency declined sharply in the absence of auxin or presence of other cytokinins and/or auxin. The frequency of shoot regeneration also declined with reduction in the photoperiod to 16h. On MS + BAP (1.0mg/l) + NAA (1.0mg/l) medium, cotyledonary explants showed profuse callusing, which could regenerate shoots on high ZEA + low NAA/IAA medium. However, it declined with progressing time in culture. Anthers, excised from fresh as well as cold pretreated buds, cultured on 10% sucrose containing MS media with different hormonal constitution, developed calli and/or embryos. Initial culture temperature was important with embryogenesis occurring only in anthers cultured at 30°C for 3 weeks. A high temperature (35°C) treatment was lethal for both callus as well as embryo formation. While BAP + NAA and ZEA + NAA/IAA supported embryogenesis, further plant regeneration from anther-or embryo-callus could be achieved in ZEA + NAA/IAA media. Some of the regenerants flowered already in vitro and had small and sterile flowers. Cytological examination of some of the root differentiating calli indicated the presence of haploid as well as diploid cells. Shoots were rooted during prolonged incubation on the same medium or on transfer to MS (reduced)/ B5 + ZEA + NAA media. 相似文献
12.
Summary Immature embryos from five durum wheat cultivars were grown on Murashige and Skoog medium supplemented with two concentrations of kinetin or 6-benzylaminopurine (BAP). The embryos cultured on the medium containing 5 mg/l of BAP proliferated several axillary shoots. Shoot base segments subcultured on the same medium gave more shoot proliferation. The shoots developed into ear-bearing plants. This technique could be used for clonal propagation of wheat. 相似文献
13.
The data presented herein reports a rapid and efficient method for direct plant regeneration at high frequency without intervening
callus formation from shoot tip (93%) and nodal segment (60%) cultured on MS media supplemented with 0.5 mg l−1 KIN, 0.25 mg l−1 BAP, 0.1 mg l−1 IAA and 100 mg l−1 CH. Conversely, leaf and internodal explants were poorly responsive. Adventitious shoot buds arose not only from the cut
ends but all along the surface of the explants leading to the formation of clusters with multiple shoots. Multiple shoots
upon transfer to MS media supplemented with 2.0 mg l−1 IBA induced efficient rooting (80%). In vitro flowering was observed when tissue culture-raised plantlets were maintained for extended period in culture. Shikonin was
induced in roots of regenerated plants which often exudates in the culture medium was quantified spectrophotometerically by
recording absorbance at 620 nm and estimated to be 0.50 mg g−1 fresh weight of tissue at the end of the 50 days of culture. The regenerated plants were successfully acclimatized, hardened,
and transferred to soil in green house for micropropagation. The protocol developed here will be very useful for the supply
of Arnebia hispidissima all year as a raw product necessary for obtaining Shikonin for the cosmetic, dyeing, food, and pharmaceutical industries. 相似文献
14.
Aneesha Singh 《Journal of Crop Science and Biotechnology》2018,21(1):89-94
Although several studies have been made on the micropropagation of Jatropha curcas using agar base mediums, none of them have been by using liquid medium systems. The effects of explant type and temporary immersion system (test tube, jar with filter paper boat, and growtek bioreactor) on the micropropagation of J. curcas were studied. The explant type influenced shoot quality, multiplication coefficient (MC), and rooting. Leaf explant produced more and longer shoots than nodal explant. Use of filter paper (FB) boat prevented hyperhydricity and allowed proliferation of nodal explants cultured in liquid MS (Murashige and Skoog) medium supplemented 6-benzylaminopurine (BAP) and Kinetin (KN). The best shoot bud induction (92.1±3.1%) was achieved in liquid MS medium supplemented with 2.0 mg/L KN. Leaf regeneration efficiency was compared in growtek bioreactor and in jar containing liquid MS medium supplemented with 0.5 mg/L Thidiazuron (TDZ). The best shoot bud regeneration (78.7±2.1%) was obtained in growtek bioreactor. Shoot buds achieved from nodal segment and leaf were subcultured on filter paper boats in jar and bioreactor containing liquid MS medium supplemented with BAP, Indole butyric acid (IBA), Indole-3-acetic acid (IAA), and KN. Best shoot proliferation and elongation was obtained in filter paper boats containing liquid MS medium supplemented with 1.5 mg/L BAP, 0.5 mg/L IAA, and 0.2 mg/L KN. The number of multiple shoot buds was higher in leaf explants as compared to nodal explants and the highest number of multiple shoot buds was recorded from leaf explants. Up to 76.4% rooting efficiency was obtained when the shoots were ex vitro rooted. The generated plants well established in the nursery and grew normally in outdoor conditions. The protocol has good potential for application in large-scale propagation of J. curcas using liquid medium. 相似文献
15.
Induction and development of adventitious shoots of Atropa baetica as a means of propagation 总被引：1，自引：0，他引：1
In vitro propagation of Atropa baetica was established employing axillary buds. Single buds were cultured through a multiple
shoot induction phase, rooting phase, and then followed by acclimatization in soil. For multiple shoot induction, Murashige
and Skoog (MS) medium with 3% sucrose, supplemented with either 0.75 or 1.25 mg l-1 of BAP provided the best results with an average of 5.6 shoots per explant after 31 days of culture. Similar results were
obtained with higher BAP concentrations (1.75–2.0 mg l-1); however, these media had a negative effect on the subsequent root induction due to residual BAP effect. Medium containing
only 0.25 mg l-1 of BAP induced a significantly lower number of shoots. Root induction occurred spontaneously after transferring the shoots
onto MS medium lacking any plant growth regulator. Moreover, root induction also occurred on media supplemented with 0.125
and 0.25 mg l-1 of NAA. On these two rooting media, this response was more prominent and with a higher number of roots per explant. Nevertheless,
after 28 days on root induction medium, the number of rooted plantlets was similar on the three media. Acclimatization of
plantlets in soil was very successful (95.52%). However, all plantlets which died during acclimatization were rooted on medium
containing 0.25 mg l-1 NAA suggesting a negative carry over effect of this medium upon plantlet survival, irrespective of the initial BAP treatment
used. On the other hand, karyological studies showed no variation in the number of chromosome (2n=72) in root tips of the
plantlets produced.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
16.
High frequency direct plant regeneration from leaf and petal explants was accomplished for the first time in Streptocarpus varieties. The shoot induction frequency varied with respect to the benzylaminopurine (BAP) concentration added to the Murashige
and Skoog (MS) medium. MS medium with 0.5 mg l−1 BAP exhibited the highest (69.9%) plant regeneration frequency with an average of 186 shoots per explant. A higher concentration
of BAP inhibited shoot bud induction and plant regeneration along with necrosis of explants. Petal explants derived from the
varieties ‘Branwen’ (pink and white) and ‘Chorus Line’ (violet and white) displayed plant regeneration frequency of 22.2–47.4%
(within a total of 12 weeks) on MS medium containing 2.0 mg l−1 α-naphthaleneacetic acid and 0.5 mg l−1 BAP for 8 weeks followed by 4 weeks on MS medium with 1.0 mg l−1 BAP. Scanning electron microscopy confirmed direct plant regeneration without callus. Regenerated plants from leaf explants
with well-developed leaves and roots were hardened and successfully transferred to pots in glasshouse exhibiting 86% survival
at the end of 4–6 weeks. Whereas, regenerated plants from flower petal explants upon transfer to pots in glasshouse exhibited
75–82% survival at the end of 4–6 weeks. 相似文献
17.
Mohsen Hesami Mohammad Hosein Daneshvar 《Journal of Crop Science and Biotechnology》2018,21(2):129-136
The aim of this study is to introduce the suitable protocol for indirect regeneration from seedling-derived leaf segment of Ficus religiosa. The leaf explant successfully produced callus on MS medium containing various concentrations of auxin in combination with BAP. The maximum callus induction (100%) was achieved in MS medium containing 0.5 mg/l 2,4-D plus 0.05 mg/l BAP and MS medium containing 1.5 mg/l NAA plus 0.15 mg/l BAP as well. MS medium consisting of 2,4-D produced yellow-brownish and friable callus (type I) while the yellowish and compact calli (type II) were obtained in MS medium consisting of NAA. On the other hand, MS medium supplemented with IBA formed greenish and compact calli (type Ш). The regeneration rate in type II callus was less than the type I, and there was no shoot induction observed on type Ш calli. MS medium supplemented with 1.5 mg/l BAP in combination with 0.15 mg/l IBA had the highest regeneration frequency (100%) and maximum shoot numbers (5.16) as well as shoot length (2.56 cm) in type I callus. A maximum of 93.33% root induction was observed in MS medium supplemented with 2.0 mg/l IBA plus 0.1mg/l NAA. The plantlets were successfully transferred to the greenhouse. This system could be utilized for large-scale multiplication of Ficus religiosa. 相似文献
18.
本研究以迷迭香叶片为外植体,探索愈伤组织形成及再分化条件。结果表明:蔗糖含量较高的培养基可促进愈伤组织形成,其中以MS+蔗糖50g/L+6-BA0.5mg/L+NAA0.5mg/L效果最好,诱导率可达88%;愈伤组织再分化形成不定芽时,以MS+6-BA1.5mg/L+KT0.5mg/L+NAA0.5mg/L效果较好,再分化率达50%;MS+6-BA0.8mg/L+NAA0.5mg/L诱导不定芽增殖,增殖率可达到300%多;不定芽生根时,MS+NAA0.1mg/L效果较好,生根率可达65%。同时,研究发现,尽管外植体被消毒至无菌,但75%乙醇复合其它灭菌剂共同灭菌时,会导致外植体大量死亡。 相似文献
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20.
选择不同基因型的花生品种为外植体供体,以初步建立适应河南花生品种的高效再生体系。以5天苗龄的花生无菌胚轴为外植体,将供试的4个花生品种分别接种于4种丛生芽诱导培养基上：MS+6-BA5mg/L+NAA1mg/L,MS+TDZ0.6mg/L+NAA0.4mg/L,MS+TDZ1mg/L+6-BA1mg/L+NAA0.5mg/L,MS+TDZ1mg/L+6-BA2mg/L+NAA0.5mg/L。在25℃±1℃、2000lx、16h/d光照条件下培养约30天左右,上胚轴和下胚轴均分化出愈伤组织和丛生芽点。结果发现,上胚轴的丛生芽诱导率远高于下胚轴,最高达到67%,平均每个外植体产生4.5个丛生芽,最高的可分化出30多个;上胚轴在培养基MS+6-BA5mg/L+NAA1mg/L和MS+TDZ1mg/L+6-BA1mg/L+NAA0.5mg/L的丛生芽分化较好,该研究为花生组织的离体培养和外植体遗传转化提供有效途径。 相似文献