• 제목/요약/키워드: root explant

검색결과 98건 처리시간 0.028초

High Frequency Plant Regeneration from Leaf, Petiole and Internode Explants of Codonopsis lanceolata Benth.

  • Ghimire, Bimal Kumar;Shin, Chul-Min;Li, Cheng Hao;Kim, Na-Young;Chung, III-Min;Lim, Jung-Dae;Kim, Jae-Kwang;Kim, Myong-Jo;Cho, Dong-Ha;Yu, Chang-Yeon
    • 한국약용작물학회지
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    • 제15권2호
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    • pp.73-81
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    • 2007
  • An efficient regeneration system was developed using leaf, petiole, and internode explants. Highly embryogenic callus was obtained following cultivation on MS basal nutrient supplemented with 2 $mg/{\ell}$ 2,4-D. Globular, heart, torpedo and cotyledon shaped somatic embryo were produced from the surface of embryogenic callus. Direct shoot regeneration without intermediate callus formation has been achieved on MS medium supplemented NAA and BAP. The percentage of response varies with different concentration of auxin and cytokinin treated individually or in combination. The best shoot regeneration response (54.28%) and number of shoot per explant (12.67) were achieved on the medium supplemented with 0.1 $mg/{\ell}$ NAA and 1 $mg/{\ell}$ BAP. The regenerated shoot transformed into young plant when cultured into elongation and root induction medium. More than 90% of in vitro propagated plants could survive when transferred to the greenhouse for acclimation. This optimized regeneration system can be used for rapid shoot proliferation and genetic transformation.

갯기름나물의 체세포배 분화와 기관 분화를 통한 재분화 (Plant Regeneration via Somatic Embryogenesis and Organogenesis from Peucedanum japonicum $T_HUNB$)

  • 김옥태;김광수;안준철;황백
    • 식물조직배양학회지
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    • 제28권1호
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    • pp.21-24
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    • 2001
  • 식용 및 약용으로 사용되는 갯기름나물의 기내배양을 통한 재분화율을 조사하였다. 캘러스는 잎과 엽병의 절편체에서 발생하였고 0∼5 mg/L의 NAA와 0∼10 mg/L BA가 첨가된 MS 기본배지에 치상하여 암배양 결과 자발적인 배 분화와 기관 분화를 보여주었으며 2.5 mg/L NAA와 10 mg/L BA의 조건에서 재분화율이 가장 높았다. 체세포 배의 발생양상은 구형, 심장형, 어뢰형을 거쳐 자엽 단계로 발달하여 전형적인 접합자 배의 모습으로 발달하였다. 배 발생한 일차 체세포배를 0.2 mg/L의 NAA가 첨가된 배지에서 배양하였을 때, 이차 체세포배가 발생하였으며 주로 일차 체세포배의 배축과 하배축에서 많이 발생하였고 그 다음으로 자엽이나 뿌리 부분에서 발생하였다.

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Eucalyptus pellita 기내발아묘의 부정아 유도에 미치는 BA 및 NAA 효과 (Effect of BA and NAA on Adventitious Bud Induction From In Vitro Germinant Eucalyptus pellita)

  • 김지아;문흥규;강호덕
    • Journal of Plant Biotechnology
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    • 제32권3호
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    • pp.201-207
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    • 2005
  • 부정아 유도를 통한 E. pellita의 재분화 체계를 확립하고자 기내 발아묘를 재료로 부정아 유도에 미치는 BA 및 NAA 효과를 시험하였다. 기내 부정아 유도는 재료의 노화정도, 절편 및 생장조절제에 따른 차이가 큰 것으로 나타났다. 발아 후 7일된 식물체가 발아 후 14일 된 것 보다 양호한 반응을 보였고, 절편은 자엽 > 배축 > 뿌리 순으로 부정아 유도가 이루어졌다. 뿌리에서는 부정아가 전혀 유도되지 못했다. 적정배지는 MS 배지에 0.5 mg/L BA, 0.2 mg/L NAA로 나타났으며, 유도된 부정아는 DKW + BA 0.2mg/L + NAA 0.01 mg/L 배지에서 정상적인 줄기로 재생되었고, 다경으로 생장되고 자발적인 발근도 이루어 졌다. 이 상의 결과는 어린 자엽과 배축에서 부정아 유도를 통해 E. pellita의 증식이 가능함을 보여주었다.

Effect of Colchicine on Chromosome Doubling in Codonopsis lanceolata

  • Kwon, Soo-Jeong;Seo, Dong-Yeon;Cho, Gab-Yeon;Lee, Moon-Soon;Moon, Young-Ja;Boo, Hee-Ock;Woo, Sun-Hee;Kim, Hag-Hyun
    • 한국자원식물학회지
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    • 제29권3호
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    • pp.347-354
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    • 2016
  • The present study was performed to investigate the effects of the colchicine concentrations on chromosome doubling for producing of tetraploid plants of Codonopsis lanceolata, and its effect on plant morphology. A total of 180 individuals germinated from 16 treatment groups, were exposed to various concentrations (0.05-1.0% w/v) of colchicine for different soaking duration (3-24 hour). The highest numbers of tetraploid plants (3) were observed from the lowest concentration of colchicine (0.05%), and one (1) tetraploid plant was obtained from the 0.5% concentration group with a 6 hour treatment. However, no tetraploid individual was observed in any other treatment groups. The plant height of the diploid (18.1 ㎝) was slightly shorter than that of the tetraploid (13.4 ㎝). The fresh weight of the main root in the diploid (0.5 g) was four-fold higher than the tetraploid (2.2 g). The colchicine-treated plant regeneration rate in C. lanceolata was decreased when the plants were subjected to high concentration of colchicine. In particular, the highest number of tetraploid plants (5 and 3) was obtained from the lower concentration (0.05% and 0.1%) of colchicine for 6-hour treatment, which were a higher rate (29.4% and 30%) of regenerated tetraploid plants than other regenerated plants. As in the seed treatment result, the plant height of the diploid was significantly higher (10.4 ㎝) than tetraploid. The higher morphological changes were observed comparatively from tetraploid plants than the diploid.

황금(Scutellaria baicalensis) 조직배양에 의한 Baicalin, Baicalein 및 Wogonin 생산 (Production of Baicalin, Baicalein, and Wogonin on Plant Tissue Culture of Scutellaria baicalensis)

  • 황인택;이재진;이주영;백승우;김용호
    • 한국자원식물학회지
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    • 제28권4호
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    • pp.526-532
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    • 2015
  • Scutellaria baicalensis Georgi (SJ) is a perennial plant and its root has been used in oriental traditional medicine for treatment of fever, inflammation, diarrhea and anticancer effect, etc. In this study, plant tissue culture system for SJ was developed. Stem piece of younger plant was optimum explant for callus induction and growth on MS medium supplemented with NAA 1.0 ㎎/L plus BA 0.5 ㎎/L. Plantlet regeneration through callus culture was well on MS medium containing NAA 1.0 mg/L. SJ has been known biologically active substances such as baicalin, baiclein, and wogonin. This study was carried out to examine the effect of plant growth regulators for production of baicalin, baicalein, and wogonin through callus culture. The HPLC pattern of callus extract was identical to that of standard solution, it shows that the callus produced by tissue culture has the same flavonoids composition of SJ. Baicalin, baicalein, and wogonin production was 471.5~52.8 ㎍/g, 137.6~4.0 ㎍/g, and 16.6~1.3 ㎍/g, respectively, on MS media with nine different plant growth regulator combinations. This may indicate that plant tissue culture of SJ possible to produce the biologically active substances effectively

히아신스(cv. Pink Pearl)의 인편 기내 배양시 효과적인 자구의 재생과 생장 (Efficient Bulblet Regeneration and Growth from Bulb Scale of Hyacinthus orientalis L. cv. Pink Pearl Cultured in vitro)

  • 이경순;정정한;정용모;김도훈;정순재;남재성;김경태;이영병
    • 생명과학회지
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    • 제17권10호
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    • pp.1336-1340
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    • 2007
  • 히아신스 Pink Pearl 품종의 인편배양에서 자구의 재생과 생장은 1.0 mg/l와 3.0 mg/l의 농도에서 IAA보다 IBA가 더 효과적이었으며, 절편체의 기부가 배지에 삽식되는 정상적인 치상 방향이 역방향의 치상 방법에 비해 자구의 재생과 뿌리의 생장에 더 효율적인 것으로 나타났다. 계대배양에서 재생된 자구와 뿌리의 생장은 한천배지보다 펄라이트가 첨가된 액체배지에서 증가되었다. 이와 같은 히아신스 Pink Pearl 품종의 기내배양의 경우 자구 재생을 위한 초대배양은 한천 고체배지를, 재생 된 자구의 생장은 펄라이트의 액체배지를 사용하는 2 단계의 교대배양 시스템이 더 유용함을 시사한다.

High-frequency regeneration by stem disc culture in selected clones of Populus euramericana

  • Cui, Hae-Yeon;Lee, Hyo-Shin;Oh, Chang-Young;Han, Shim-Hee;Lee, Kyung-Ju;Lee, Hyun-Jeong;Kang, Kyu-Seok;Park, So-Young
    • Journal of Plant Biotechnology
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    • 제41권4호
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    • pp.236-241
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    • 2014
  • An efficient regeneration protocol for stem disc culture of Populus euramericana, which is important species for bioenergy resource in agroforestry, was established. The number of explants that were obtained and the number of explants that regenerated varied with the genotypes. However, in all the genotypes, stem disc culture produced more regenerated shoots than did in axillary bud culture. A comparison of the effects of cytokinin type and concentration on shoot regeneration in different explants (i.e., petiole, leaf, and root segments of P. euramericana) revealed that a concentration of $0.002mg\;l^{-1}$ thidiazuron (TDZ) used on petiole segments resulted in the greatest shoot regeneration (95.83%). The hormonal requirements for the greatest shoot regeneration in the three explant types varied. Different concentrations of $AgNO_3$ and $CoCl_2$ were added separately to the medium to stop the yellowing and subsequent necrosis of the regenerated shoots. Lower concentrations (3 and $5mg\;l^{-1}$) of these compounds improved shoot regeneration and elongation, compared with the control. The in vitro-regenerated shoots were transferred to rooting medium and subsequently acclimatized. The highly efficient regeneration system of P. euramericana reported here can be used for mass propagation of this recalcitrant for regeneration, economically important tree species.

Effect of Basal Medium and Plant Growth Regulator on in vitro Plant Regeneration from Axillary Buds of Walnut New Cultiver "Sinlyeong"

  • Kwon, Young Hee;Lee, Joung Kwan;Kim, Hee Kyu;Kim, Kyung Ok;Park, Jae Seong;Huh, Yoon Sun
    • 한국자원식물학회:학술대회논문집
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    • 한국자원식물학회 2019년도 추계학술대회
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    • pp.15-15
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    • 2019
  • The walnut (Juglans regia L.), a member of the Juglandaceae, is native to the mountain ranges of central Asia. This species of walnut is valued commercially for its nuts and in some areas for its timber. The seeds of walnut are recalcitrant and it has strong integument dormancy and their germination is irregular, making its natural propagation difficult. Low percentage of seed germination and long propagation cycle are the main problems of propagation. This study was conducted medium composition on in vitro plantlet regeneration from axillary buds of walnut. It has proved to be the most generally applicable and reliable method of in vitro propagation. Micropropagation culture that axillary buds are excised aseptically enables faster multiplication of plants. The axillary buds of walnut new cultivar "Sinlyeong" were cultured on two basal media which contained the different plant growth regulators depending on the respective shooting and rooting stage. After 12 weeks, the shoot generation rate was 85.3%, the shoot number and its length were 1.9/explant and 2.7 cm in the most favorable medium composition. The percentage of rooting was 25.4%. From these results, it was found the optimum basal medium and plant growth regulator for in vitro plant regeneration from axillary buds of walnut new cultivar "Sinlyeong". However, we have continued to search the other medium additives to enhance the rate of walnut root.

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사과 대목 M.26 (Malus pumila Mill)의 기내 대량번식 및 simple sequence repeat 마커를 이용한 증식된 식물체의 유전적 다양성 평가 (In vitro micropropagation of M.26 (Malus pumila Mill) apple rootstock and assessment of the genetic diversity of proliferated plantlets using simple sequence repeat markers)

  • 조강희;한봉희;한점화;박서준;김세희;이한찬;김미영;김명수
    • Journal of Plant Biotechnology
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    • 제45권4호
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    • pp.382-391
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    • 2018
  • 본 연구는 사과 대목 M.26 (Malus pumila Mill))의 효과적인 기내 대량번식하기 위해 신초 증식과 뿌리 형성에 적합한 배지조건을 확립하고, simple sequence repeat (SSR) 마커를 이용하여 증식된 소식물체의 유전적 다양성을 분석하고자 수행하였다. MS (Murashige and Skoog) 기본배지에 benzyladenin (BA, $0.5{\sim}5.0mg{\cdot}L^{-1}$)와 thidiazuron (TDZ, $0.01{\sim}0.1mg{\cdot}L^{-1}$)을 첨가하여 신초를 배양한 결과, $1.0mg{\cdot}L^{-1}$ BA 처리에서 절편체 당신초 수가 10.67개로 가장 많았으며 과수화 발생률은 BA 처리구보다 TDZ 처리구에서 높았다. M.26 신초 증식에 BA와 auxin과의 혼용처리 효과는 없었고, $1.0mg{\cdot}L^{-1}$ BA가 첨가된 MS 기본배지가 적합하였다. 신초 발근에 적합한 배지를 구명하고자 auxin인 indole-3-butyric acid (IBA)와 ${\alpha}$-naphthaleneacetic acid의 농도($0.5{\sim}5.0mg{\cdot}L^{-1}$), MS 배지의 무기염류(1/4 ~ 1배) 및 sucrose 농도($0{\sim}30g{\cdot}L^{-1}$)를 달리하여 처리한 결과, $1.0mg{\cdot}L^{-1}$ IBA, $15{\sim}20g{\cdot}L^{-1}$ sucrose가 첨가된 1/2 MS 배지에서 발근율(100%), 뿌리 수(10.45 ~ 13.60개/절편체), 뿌리 길이(7.41 ~ 8.33 cm) 및 신초 길이(4.93 ~ 5.38 cm)가 양호하였다. 15종의 SSR primer를 이용하여 증식된 20개의 소식물체를 분석한 결과, 총 30개의 대립유전자가 검출되었으며 모두 동일한 밴드 패턴을 보여 온실에서 자란 M.26 식물체와 유사하여 유전적으로 안정한 것으로 판단되었다.

병풍쌈의 엽병 조직 절편으로부터 식물체 재분화 (Plant Regeneration from the Segments of Petioles of Cacalia firma)

  • 최수완;임순;박완근;최용의
    • 한국자원식물학회지
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    • 제24권5호
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    • pp.483-488
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    • 2011
  • 본 연구는 쌈채소로 각광받고 있지만 산림에서는 희귀한 식물이며 번식이 까다로운 병풍쌈(Cacalia firma)을 기내 번식을 통한 식물체 번식을 위하여 진행되었다. 병풍쌈의 기내 종자발아를 위해서는 종자의 절단 및 $GA_3$처리가 효과적이었다. 종자유래 유식물체의 자엽, 잎, 엽병 및 뿌리절편을 BA가 첨가되 배지에 배양한 결과 엽병 절편당 2.76개로 가장 양호하였다. 부정아 유래 식물체의 엽병 절편을 다양한 종류의 cytokinin(2-iP, kinetin, zeatin, TDZ, 및 BA)를 각각 2 $mg{\cdot}L^{-1}$씩 단독 첨가한 배지와, 오옥신으로 NAA 0.5 $mg{\cdot}L^{-1}$을 혼합 첨가한 배지에 접종하였다. 그 결과 TDZ와 BA에서 높은 부정아 유도율을 나타냈고, kinetin에선 낮은 부정아 유도율을 보였으며, 2-iP와 zeatin에서는 부정아가 형성되지 않았다. NAA를 혼합한 배지는 단독 처리 배지보다 높은 유도율을 나타냈지만 배양절편당 부정아의 수는 오히려 줄어들었다. 대부분의 부정아는 cytokinin 단독 처리시 배양절편으로부터 직접부정아가 발생되었으며, cytokinin과 NAA 혼합된 배지에서는 일부 캘러스화된 부분에서 부정아가 발생되었다. 이들 부정아는 IBA가 첨가된 배지에 옮겨준 경우 뿌리가 발생되어 식물체로 재생되었다. 재생된 식물체는 토양에 성공적으로 순화되었다.