• Korean Journal of Plant Resources
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• v.13 no.2
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• pp.140-146
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• 2000

This study was conducted to determine the effect of cutting type, growth regulators and propagation media on the rooting and root growth of Roea davurica $P_{ALL}$. Three type of cutting, hardwood, half-softwood, softwood cutting and root cutting of Rosa davurica $P_{ALL}$, were used to study the rooting ability. There was no rooting in hardwood cutting while root cutting was appeared 100% of callus formation and rooting. The optimum conditions of softwood cutting for rooting were IAA 100ppm and rooton-F at vermiculite+perlite. The rate of rooting in treatment of rooton-F ranged from 10 to 60%, but such a good effect was not appeared in other growth regulators, IAA, NAA and IBA.

• Korean Journal of Plant Resources
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• v.11 no.3
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• pp.353-357
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• 1998

This study was conducted to determine the effect of growth regulators, genotype, and cutting position on the rooting and root growth from cutting of Chrysanthemum zawadskii H.. Rooting rate of Keungugeolcho in the treatement of IBA 500 and 1000 ppm was the better than those of other treatments of IAA, NAA and Rooton. Rooting rate differed depending on the genotype. Hangryobonggugeolcho was better than Keungucheolcho in rooting rate. The treatment of rooton remarkably induced many roots from the cuttings of eight accessions of Chrysanthemum zawadskii H.. Also, rooting rate and number of root differed depending on cutting position. When cuttings including shoot tip were cultured on tray containing bed soil, rooting rate and number of root induced from cuttings with shoot tip was higher than when cuttings without shoot tip and with lateral axillary bud were cultured.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.22 no.2
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• pp.112-120
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• 1977

In Korea. the cultivating standard of stevia is not established yet. Because stevia is across-fertilizing plant. planting a cutting is its available propagation method. This study was made to know the effective propagation growth and adaptability of stevia in Jeju-do, according to the wintering effect and the planting density.

• Journal of Korean Society of Forest Science
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• v.77 no.4
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• pp.445-452
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• 1988

This study was conducted to establish practical micropropagation of jujube cultivars ('Geumsumg', 'Bokjo') by axillary bud culture. The results are summerized as follows : 1. Addition of activated charcoal to half-strength Murashige and Skoog(MS) medium supplemented with 0.5mg/l benzylaminopurine(BAP) enhanced shoot and root growth. At 500mg/l activated charcoal level 'Geumsung' showed best result, and shoot length and the number of multiple shoot were 6.4cm and 10.0, respectively. At 1,000mg/l activated charcoal level 'Bokjo showed best result, and shoot length and the number of multiple shoot were 7.5cm and 12.4, respectively. 2. As indole-3-butyric acid(IBA) concentration increased, rooting and callus growth of microshoot were enhanced. The optimum IBA concentration for shoot elongation and multiplication was 1.0mg/l. 3. Growth responses of shoot-tip and axillary bud segments between two jujube cultivars were different. 'Geumsung' showed that axillary bud explants were about twice better than shoot-tip explants for shoot multiplication, but 'Bokjo' showed that shoot-tip explants mere better than axillary bud explants for shoot elongation and multiplication. 4. In acclimatization processes of plantlets produced in vitro, the survival of plantlets with only root primordia in soil medium was better than that of plantlets with several routs resulting in 97.8%. 5. In cutting of in vitro-derived microshoot, paclobutrazol was more effective than IBA, naphth-aleneacetic acid(NAA) and $Rooton^{(R)}$ in rooting and root growth.

• Korean Journal of Veterinary Research
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• v.47 no.1
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• pp.25-32
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• 2007

Houttuynia cordata root on non-lipid oxidative damage. The antioxidative efects of methanolic (MeOH) extract of Houttuynia cordata rooton non-lipid, including liposome oxidation, oxidation of deoxyribose, protein oxidation, chelating, scavenging,and 2'-deoxyguanosine (2'dG) oxidation were investigated. Houttuynia cordata root exhibited highantioxidative effect in a liposome model system. The inhibitory effect of MeOH extract on deoxyribosedamage exhibited antioxidative effect and it afforded considerable protection against damage to deoxyribose.In addition, MeOH extract at over 300extracts exhibited metal binding ability for hydrogen peroxide. Furthermore, the oxidation of 2'dG to 8-hydroxy-2-deoxyguanosine was inhibited by MeOH extracts, and scavenging activity for hydroxyl radicalexhibited a remarkable effect. The present results on biological model systems showed that MeOH extractswas effective in the protection of non-lipids against various oxidative model systems.

• Korean Journal of Medicinal Crop Science
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• v.2 no.2
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• pp.133-139
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• 1994

Eleutherococcus senticocus MAXIM containing compounds for a cordial and lumbago is a native plant in this country. However it is generally difficult to propagate them by seed. This study was carried out to improve propagation efficacy by cutting method using Eleutherococcus senticosus MAXIM collected Mt. Odae for three years$('90{\sim}'92)$. Rooting was delayed by 3 to 12 days but callus formation and rooting percentage was high by 75%, 30% respectively in the treatment of Rooton-F powder, a chemical for rooting promotion, compared with non-treatment. Rooting percentage and rooting characters were not differenced by treatment for remove rooting inhibition compounds and soil-media mixured by 1:1 of vermiculite and perlite was suitable for elevating rooting ratio. A. chiisanensis and A. sieboldianum were rooted well in any time to be cut, while rooting activity of E. senticosus was different by time to be cut. Rooting ratio of E. senticosus was 26%, 36% and 60% when cutten March 20, July 20 and september 20, respectively.

• Korean Journal of Plant Resources
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• v.23 no.4
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• pp.368-373
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• 2010

Juniperus chinensis var. sargentii Henry is a short and creeping evergreen shrub which reaches about 60 cm in height and only occurs in the northeast Asia and in the top of high mountains over the Korea. The Korea Forest Service protects it strictly by law since J. chinensis var. sargentii is an eccentric plant and possibly may be exterminated soon in Korea. This study was carried out to develop the propagation technique by cutting for conservation of genetic resources of J. chinensis var. sargentii. The rooting responses of branch cuttings, obtained from hard(May) and semi-hard wood shoots (August) to four growth regulators, namely, IAA, IBA, NAA and Rooton(exceptionally powder method) applied at various concentrations(0, 100, 200, 500, 1000 and 2000 $mgL^{-1}$) were examined in mixed soil media. Rooting rate showed significant difference between cutting times, among kinds and among concentrations of growth regulators. The optimum cutting time was April to May in hardwood cutting. The application of IBA 1000 $mgL^{-1}$(rooting rate : 36.4%) was most effective in callus formation and rooting of cutting. Relatively, rooting of cutting of the control taken in May was 30.4%. Root characteristics such as number, length and diameter of root were not significantly affected by kinds and concentrations of growth regulators in hardwood cutting.

• Korean Journal of Medicinal Crop Science
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• v.11 no.1
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• pp.46-52
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• 2003

This experiment was conducted to investigate the propagation for mass production of Acanthopanax koreanum NAKAI utilized for health food and medicine material. Germination rate of A. koreanum seeds were 64% when seeds were stored at 15 for 60 days and then were treated with 50 ppm of kinetin and dormancy were broken at 5 for 60 days. Rooting rates of green-wood cuttings treated with IBA 100 ppm, NAA 50 ppm, and IAA 100 ppm were 61.7, 56.7, and 60.0%, respectively. Rooting rates of greenwood cuttings treated with Rooton in scoria + horticulture media and volcanic ash were 76.7 and 66.7%, respectively. Survival rate of seedlings planted on Aug. 10 was highest (96%) under 75% shading net while shoot growth was best under 55% shading net. Survival rate of seedlings planted on May 2 was highest (91%) 55% shading net, and shoot growth was also best 55% under shading net.