• Title/Summary/Keyword: micropropagation

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Effect of Medium Composition on Phalaenopsis Micropropagation Using Lateral Buds From Flower Stalks (액아배양에 의한 호접란 대량번식시 배지조성의 영향)

  • Park, Myung-Joo;Park, Soon-Jung;Kim, Doo-Hwan
    • Horticultural Science & Technology
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    • v.16 no.1
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    • pp.42-44
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    • 1998
  • The effect of medium composition on PLB formation and multiplication and shoot regeneration was studied to establish the micropropagation system of the tropical orchid Phalaenopsis. The highest frequence of PLB formation resulted from the VW medium with 1.2 times ion concentration, 1% sucrose, 1.5g/L PVP or 2.5g/L active charcoal, apple and potato extract and 4g/L gellan gum. The highest ratio of PLB multiplication was obtained from the VW medium with 2% sucrose, apple and potato extract and cotton plate. The shoot regeneration was the most effective with the hyponex medium with 3% apple, 3% potato and 4% banana extract.

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Tissue culture of the plant Pluchea indica (L.) Less. and evaluation of diuretic potential of its leaves

  • Pramanik, Kartick Chandra;Biswas, Ria;Mitra, Anupama;Bandyopadhyay, Durba;Mishra, Moumita;Chatterjee, Tapan Kumar
    • Advances in Traditional Medicine
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    • v.7 no.2
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    • pp.197-204
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    • 2007
  • The present study focused on the establishment of micropropagation protocol for the high value Pluchea (P.) indica (L.) Less., genotype, an important medicinal plant and evaluation of the diuretic activity of the leaf extract of the tissue cultured plant. Leaf explants, nodal segments and shoot tips were cultured in MS medium supplemented with auxin and cytokinin and their combinations. With the objective of inducing callus giving rise to new adult plants, naphthalene acetic acid was found to be most effective for (80%) for callus induction. The methanolic extract of leaves of the micropropagated P. indica was investigated for its diuretic activity in Wistar albino rats. Urinary excretion parameters were studied for evaluation of diuretic activity using Frusemide (20 mg/kg, p.o.) as standard. The extract showed significant diuretic activity at the doses of 100, 200 and 300 mg/kg. p.o. An oral acute toxicity study for the extract was carried out and the $LD_{50}$ value was found to be 2,825 mg/kg body weight.

Rapid Micropropagation of Hovenia dulcis Thunb. Through in vitro Stem Nodal Cultures

  • Park, Dong-Jin;Kang, Young-Min;Jung, Ha-Na;Min, Ji-Yun;Kim, Yong-Duck;Karigar, Chandrakant S.;Choi, Myung-Suk
    • Journal of Korean Society of Forest Science
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    • v.95 no.2
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    • pp.155-159
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    • 2006
  • An efficient method for in vitro propagation of the medicinal plant Hovenia duleis, was established. Plantlets for micropropagation of H. dulcis were obtained from in vitro germinated seeds. The effectiveness of various levels of cytokinins (BAP, Kinetin and TDZ) on multiple shoot formation from stem nodes was tested. BAP (1.0 mg/L) treatment induced highest number of multiple shoots. The growth pattern of plantlet on various culture media was undertaken. The shoot elongation was optimal on 2MS basal medium without growth regulators. The in vitro rooting ability of H. dulcis shoots was examined with two-auxins IAA and IBA. The IAA (1.0 mg/L) treatments induced earliest rooting with maximum number of roots and root growth. Rooted shoots were transferred directly to small pots with artificial soil and such established plant exhibited a normal growth pattern similar to wild plantlet.

In Vitro Propagation Using Stool Shoots of Mature Betula platyphylla var. japonica (자작나무 성숙목의 근주맹아를 이용한 기내증식)

  • Moon, H.K.;Youn, Y.;Hyun, Y.I.;Lee, S.K.
    • Journal of Korean Society of Forest Science
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    • v.80 no.4
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    • pp.416-419
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    • 1991
  • Effective micropropagation was achieved by axillary bud culture from stool shoots of 15-year-old Betula platyphylla var. japonica. Shoot development and proliferation from the explants were successful on WPM supplemented with 0.5 or 1.0mg/l BAP. All the regenerated shoots rooted when transfered to GD medium containing 0.2mg/l IBA. After transplaning to soil more than 95% of the plantlets survived and showed normal growth. The results demonstrate that masspropagation of selected mature trees is feasible using tissue culture technique.

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Micropropagation of Diospyros kaki Thunb. by Shoot Tip Culture (경정배양에 의한 감나무 (Diospyros kaki Thunb.)의 기내번식)

  • 류정아;조두현;송인규;박태식;최경배
    • Korean Journal of Plant Tissue Culture
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    • v.27 no.1
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    • pp.51-55
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    • 2000
  • To investigate the effect of media and growth regulators in micropropagation of persimmon (Diospyros kaki Thunb.), dormant axillary buds taken from trees of persimmon cultivars such as Ichikikeijiro, Tonawase and Hiratenenashi were used. Shoot tips were successfully cultured in full or half of nitrogen strength of MS medium. The most effective cytokinins for shoot proliferation and elongation of persimmon cv. Ichikikeijiro were 5 mg/L and 2 mg/L zeatin, respectively. Shoots were successfully rooted in 1/2N-MS medium with 1 mg/L IBA.

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Micropropagation via Axillary Bud Induction of Eucalyptus pellita (액아유도에 의한 Eucalyptus pellita의 기내번식)

  • Moon, Heung-Kyu;Kim, Ji-Ah;Lee, Hyun-Shin;Kang, Ho-Duck
    • Journal of Plant Biotechnology
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    • v.30 no.3
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    • pp.269-273
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    • 2003
  • In order to develop an efficient micropropagation protocal for Eucalyptus pellita, on in vitro culture system has been was established by inducing axillary buds from greenhouse stock materials. Among 6different media tested, DKW medium was the best ot induce bast induce both shoot proliferation and growth. Average number of proliferated shoots of 403per explant was obtained at the concentration of 0.1mg/LBA. Most of the stem materials excreted phenolic compounds at the proximal part of the explant and caused darking of the media. Therefore, it was necessary to transfer frequently to a fresh medium and/or to add activated charcoal at the concentration of 0.02%(w/v). Generally on vitro roots were formed easily on 1/2DKW medium with NAA treatment. All the explants rooted at the medium containing 0.2mg/L NAA and displayed vigorous root growth in vitro culture conditions. After transferred to an artificial soil mixture (peatmoss: vermiculrite: perlite, 1:1:1, v/v/v) in the greenhouse, most rooted plantlets survived well without any morphological abnormalities. The results show that the species can be micropropagated effectively by the application of axillary bud culture system.