• 식물조직배양학회지
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• 제28권4호
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• pp.215-219
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• 2001

팔레높시스 대량생산시 PLB 증식에 미치는 배지와 배양환경에 대해 조사하였다. PLB 증식량은 MS배지에서 높았지만, 증식된 PLB상태는 NDM배지가 더욱 양호하였다 천연첨가 물인 CW 10% 또는 사과와 감자의 사용은 PLB 증식효율을 향상시키는 데 필수적이었다. 배지내 지지물에 따른 PLB 증신률은 gelrite가 첨가된 고체배지가 흰색과 분홍색계통 모두 액체탈지면 배지보다 증식이 양호하였다. PLB 증식시 적정 sucrose 농도는 10g/L이며 농도가 높아질수록 PLB가 유식물체로 재분화되었고 저농도 일수록 증식과 유식물체의 재분화가 모두 억제되었다. PLB증식을 위한 적정 PPF와 온도는 각각 14.3 $\mu$mol.s$^{-1}$m$^{-2}$ , $25^{\circ}C$이었다.

• 한국초지조사료학회지
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• 제21권2호
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• pp.45-48
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• 2001

In an effort to optimize tissue culture responses of tall fescue, the effects of basic medium and carbon sources on seed culturability and genotypic difference of plant regenerability were investigated. The MS basal medium was superior to $N_{5}$ 6/ and $B_{medium}$ in enhancing callus growth and plant regeneration. To determine the effect of carbon sources on plant regeneration, the seeds were cultured on medium with 30 g/L sucrose and maltose, respectively. Medium supplemented with 30 g/L sucrose resulted in regeneration of shoots from 50% of the calli. The genotypic difference in plant regenerability was obvious among five cultivars of tall fescue tested. \\`KY31\\` and \\`Hokuryo\\` showed to have higher regenerability with the frequency of 33% and 51%, respectively.

• Journal of Plant Biotechnology
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• 제38권1호
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• pp.69-76
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• 2011

This study describes the effect of myo-inositol on sustained cell division and plant regeneration from cotyledon-derived protoplast of cabbage (Brassica oleracea var. capitata). Freshly isolated protoplasts were cultured in modified Murashige and Skoog (MS) medium removed ammonia ions and containing $0.4\;mg\;l^{-1}$ thiamine HCl, $100\;mg\;l^{-1}$ myo-inositol, $2\;mgl^{-1}$ 2,4-D, $0.5\;mgl^{-1}$ BA, $30\;gl^{-1}$ sucrose and several concentrations of myo-inositol (2, 4, 6, 8, 10% (w/v)) as an osmotic stabilizer. After 3 weeks of culture in the dark at $25^{\circ}C$, the plating efficiency of cabbage protoplasts reached to $22.5{\pm}2.9%$ when cultured in modified MS medium supplemented with $2\;mgl^{-1}$ 2,4-D, $0.5\;mgl^{-1}$ BA, $30\;gl^{-1}$ sucrose and 8% (w/v) of myo-inositol at a density of $2{\times}10^5$ protoplasts/ml. Rapidly growing cell colonies after 3 weeks of culture were transferred to the same culture medium removed osmoticum. To induce shoot regeneration from calluses, calluses with about 2 mm in diameter were transferred to the MS medium containing $2\;mgl^{-1}$ BA and $0.5\;mgl^{-1}$ NAA. After further three weeks of incubation onto the medium in the light, green shoots were formed on the surface of calluses at a frequency of 30%. Upon transfer to half-strength MS basal medium, roots were formed onto the bottom of regenerated shoots without auxin treatments. These regenerated plantlets were successfully acclimatized to soil transfer, grown to normal mature plants. The cabbage protoplast culture system established in this study could be applied for production of somatic hybrids or cybrids by asymmetric protoplast fusion and mass proliferation of elite somatic clones of cabbage.

• Journal of Plant Biotechnology
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• 제37권4호
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• pp.494-504
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• 2010

본 연구에서는 고추의 소포자 배양 시 전처리 후 배지의 교환 여부, 배양 후 새 배지의 첨가 및 2층배지 사용시 하층고체배지의 양이 배의 생산에 미치는 영향을 조사하였다. 고온 전처리 후 배양배지를 첨가하여 배양하는 것보다 사용한 전처리 배지를 새 배양 배지로 교환하여 배양 하는 것이 배의 생산에 효과적 이었으며, 고온전처리 기간은 1일이나 2일에 비해 3일이 효과적 이었다. 배양 후 새 배지의 첨가는 약전처리 시에는 효과가 없었으나 소포자 전처리 시에는 배의 유기와 발달 모두 크게 향상되었다. 새 배지의 첨가 시기는 배양 4일 후가, 첨가 횟수는 1회가 배의 생산에 가장 효과적이었다. 한편 2층배지 사용 시 첨가하는 새 배지의 양은 1.5 ml이 효과적이었으며 이보다 많은 양을 첨가하는 경우 배의 발생과 발달 모두 저하되었다. 액체배지 사용 시에 비해 2층배지 사용 시 배의 발달이 좋았다. 또 2층배지 사용 시 하층고체배지의 양이 3 ml 일 때 보다는 5 ml이나 7 ml일 때 배의 발생은 감소하였으나 배의 질이 향상되었다. 이와 같은 결과들은 고추에서 다수의 정상자엽배를 생산 할 수 있는 소포자 배양시스템을 확립하는데 중요한 기초자료가 될 것이다.

• Journal of Plant Biotechnology
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• 제5권3호
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• pp.187-191
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• 2003

This paper reported the establishment of mass production system of adventitious roots of Eleutherococcus sessiliflorus through the shake flask and bio-reactor culture. Induction of adventitious roots was started from the explants of germinated somatic embryos on half-strength Murashing and Skoog (MS) solid medium. The frequency of adventitious root formation was better in the explants comprising the basal hypocotyl parts than root explants alone. Among the different auxins tested (NAA, IBA and IAA), frequency of adventitious root induction was highest on medium with 0.5 mg/L NAA, and produced $16.3\pm1.9$ roots per explant. In shake-flask culture, deletion of $NH_4NO_3$ of MS medium was effective for induction of adventitious root compared with both full and half-strength MS media. Fresh weight increase of induced adventitious roots was performed well in medium with 0.5 mg/L IBA. When adventitious roots produced in shake-flask culture were transferred to 10-liter bioreactor, 5.5 times of fresh weight increase was gained after one month of culture. HPLC analysis revealed that the amount of eleutheroside E and E1 was higher in in vitro cultured adventitious roots than the 3 year-old field cultivated root barks of Eleutherococcus sessiliflorus. The content of eltutheroside B was much lower in adventitious roots than that of field cultivated one.

• 식물조직배양학회지
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• 제24권5호
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• pp.285-289
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• 1997

꿩의비름(Sedum-erythrostichum Miq.)의 잎과 줄기의 절편을 몇 가지의 호르몬이 첨가된 MS 배지에 배양하였다. 배양 2주후 2.0 mg/L. 2,4-D와 1.0 mg/L BA를 혼합한 배지에서 잎의 절편으로부터 100%의 캘러스가 형성되었다. 이 캘러스를 2.0 mg/L 2,4-D와 1.0 mg/L BA를 혼합한 배지로 계대배양하였을때 캘러스의 생장이 왕성하였다. 또한 2.0 mg/L NAA와 1.0 mg/L BA를 혼합한 배지로 계대배양한 캘러스로부터 부정아의 분화가 왕성하였다. 생장호르몬이 없는 배지에서 분화된 신초는 1.0 mg/L IAA를 첨가한 배지에서 발근하여 완전한 식물체로 생장하였다.

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2002년도 생물공학의 동향 (X)
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• pp.337-338
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• 2002

Activated charcoal(AC) is generally used in plant tissue culture. Its addition to plant tissue culture was known to many advantages and disadvantages. We investigate that sucrose hydrolysis, which by autoclaving with or without activated charcoal on different intitial pH and sucrose concentration and that the effect of activated charcoal on plant tissue culture.

• 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.

• 식물조직배양학회지
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• 제26권1호
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• pp.1-6
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• 1999

아시아틱백합 'Gran Paradiso'의 약유래 식물체를 획득하기 위해 auxin과 cytokinin을 다양하게 조합한 MS배지에 약배양을 실시하였다. 배양 약은 초기 및 후기 2핵기인 개화 3일 전의 약이 캘러스 유도에 가장 적합하였다. MS배지에 5.0mg/L 2,4-D 단용처리나 1.0mg/L 2,4-D와 1.0 mg/L kinetin이 혼용처리되었을 경우 기관분화성 캘러스가 발생되었으나 NAA와 BA 혼용처리가 2,4-D와 kinetin 혼용처리보다 기관분화를 통한 식물체 재생에 효과적이었다. 캘러스에서 shoot는 0.5mg/L NAA와 1.0mg/L BA혼용처리에서 배양 180경에 분화되었으며 3~4개의 잎이 부착된 다아체와 뿌리 및 소자구는 2.0mg/L NAA와 2.0mg/L BA혼용처리에서 배양 250일 후에 관찰되었다. 재생된 식물체의 근단조사 결과 2배체 (2n=2x=24)로 확인되었으며 식물체를 분에 옮긴 후 2년이 경과되었을 때 모두 개화되었다.

• Journal of Plant Biotechnology
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• 제5권2호
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• pp.95-99
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• 2003

The leaf segments of garlic (Allium sativum L.) were cultured in vitro and determined optimal concentration of plant growth regulators and sugars for callus induction, multiple shoots regeneration and in vitro bulblet formation. Highest yield of callus was observed in the leaf segment culture on Murashige and Skoog (MS) medium supplemented with 1.0 mg/L 2,4-D, 30 g/L sucrose and 8 g/L agar. Regeneration rate of multiple shoots from callus was high in the MS medium supplemented with kinetin 3.0 + NAA 3.0 mg/L or SA 1.0 + NAA 3.0 mg/L, containing 30 g/L sucrose. High rate of bulblet formation was observed as the concentration of jasmonic acid increased from 0.5 to 2.0 mg/L in medium, whereas addition of gibberellic acid significantly suppressed bulblet formation. The rate of in vitro bulbing was as high as $96\%$ in MS medium supplemented with 2.0 mg/L jasmonic acid and 120 g/l sucrose after two month culture at $25{\pm}1^{\circ}C$ under 16 hours day light.