• KOREAN JOURNAL OF CROP SCIENCE
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• v.52 no.3
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• pp.289-295
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• 2007

This study was conducted to investigate the potential of polyphenols and polyphenol oxidase activity on the induction of rusty symptom development in ginseng root. When rusty inducing bacteria were inoculated on fresh ginseng root, the hue value of the inoculated root increased from 101.2 (white yellow) at 1 day after innoculation to 60.9 (brownish red) at 30 days after innoculation. Lysobacter gummosus, Pseudomonas veronii and Agrobacterium tumefaciens enhanced the accumulation of total phenolics. Along with the increase of total phenolics, total activity of polyphenol oxidase concomitantly increased but the specific activity of the enzyme was not.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.49 no.5
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• pp.389-393
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• 2004

This study was carried out to investigate the difference of growth characteristics, yield and extract content between upland and paddy ginseng cultured with 4­year-old ginseng in 2003. Although upland ginseng showed larger variation in yield than that of paddy ginseng, the average of it was greater than that of paddy ginseng because it showed better growth of aerial part and higher survival rate than that of paddy ginseng. Moisture content of fresh root was $71.8\%\;(68.5\~73.1\%),\;and\;72.7\%\;(70.2 \~74.9\%)$ on average in upland and paddy ginseng, respectively. Paddy ginseng showed higher hardness in taproot, and higher rate of rusty colored root than that of upland ginseng. The ratio of taproot dry weight in upland ginseng was smaller than that of paddy ginseng, while that of lateral root was larger in upland ginseng. Ratio of marketable root (>60g) to total harvested roots was $13.7\%\;(0.82\~8.0\%)\;and\;7.7\%\;(1.6\~12.6\%)$ in upland and paddy ginseng, respectively. Extract content did not show distinct difference between upland and paddy ginseng, but it showed large variation from $16.1\;to\;25.1\%$ in taproot, and from $24.2\;to\;32.5\%$ in lateral root depanding on the ginseng field examined.

• Korean Journal of Medicinal Crop Science
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• v.23 no.6
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• pp.480-488
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• 2015

Background : In order to determine the effects of planting methods on root growth of ginseng varieties, two different methods, direct seed sowing and transplanting were compared in terms of their effects on different root growth characteristics. Methods and Results : Higher fresh root weight was observed in ginseng grown by direct seed sowing. Direct seed sowing of three cultivars (Sunhyang, Chungsun and K-1) resulted in higher yield, whereas no difference was observed in the yield of one cultivar (Chungsun). Gumpoong was highly tolerant to physiological stress, as it showed fewer symptoms of rusty and rough skin root diseases in both direct seed sowing and transplanting. The average main root length per total root length of ginseng grown by direct seed sowing was 33.6%, whereas that of ginseng grown by the average of those by transplanting was 22.4%. Other root growth characteristics, including root length, main root diameter, and number of side roots, improved when the direct seed sowing method was used. Conclusions : To our knowledge, this is the first study reporting the differences in root growth parameters of ginseng varieties grown by direct seed sowing or transplanting at the same planting density. Because of the advantages of direct sowing during ginseng planting, developing new varieties and improving cultivation methods are imperative.

• Korean Journal of Medicinal Crop Science
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• v.22 no.3
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• pp.210-216
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• 2014

The average and maximum temperature were $29.5^{\circ}C$ and $33.2^{\circ}C$ at 2:00 p.m. respectively, in the plastic-film house covered with shade net, and both of temperature were lower $0.6^{\circ}C$ and $1.3^{\circ}C$ than those of conventional shade. Light transmittance was 14% in the plastic-film house, while 9.9% in conventional shade during growing season from May to October. Withering time of aboveground part was on October 3rd in conventional shade with 60% of withering leaf, while it was on November 10th with 3.7% of withering leaf in the plastic-film house, about 40 days longer survival. The main disease incidence were 15% of anthracnose, 17% of leaf spot, 5% of phytophthora blight and 3% of gray mold in the conventional shade, while 0 ~ 0.1% disease incidence and 95% of emergence rate in the plastic-film house. The growth in the aboveground and underground part of ginseng was totally better, particularly characteristics affecting yield such as root length, main root length and diameter in the plastic-film house. The fresh weight was increased by 128% compared to the conventional shade and harvested roots per $3.3m^2$ were 36 roots in the conventional shade and 58 roots in the plastic-film house and futhermore yield per $3.3m^2$ was increased by 216% compared to the conventional shade. As covering materials, the rice straw in the plastic-film house was excellent. The ginsenoside contents affecting the quality of ginseng were higher in the plastic-film house indicating 0.333% of Rg1, 0.672% of Rb1, 0.730% of Rc and rate of red rusty root was less than 4.0 ~ 6.1%. Above the results, the quality of ginseng grown in the plastic-film house covered with shade net was improved than that of the conventional shade.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2021.04a
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• pp.50-50
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• 2021

본 연구에서는 7년근과 13년근 산양삼을 선정하여 적변 유무에 따라 분류하고 적변에 따른 산양삼의 생육특성과 진세노사이드 함량을 조사하기 위해 수행되었다. 산양삼 재배지 9개소의 산양삼 지하부의 생육특성을 분석한 결과, 7년근과 13년근 산양삼의 생육특성은 적변에 따른 유의적인 차이는 확인되지 않았다. 적변에 따른 연근별 산양삼의 진세노사이드 함량을 비교 분석한 결과, 7년근 산양삼은 Rb1과 Rg1은 진세노사이드 함량이 일반삼에 비해 적변삼에서 높았고, 진세노사이드 Rc, Rd, Re, Rg2는 적변삼에 비해 일반삼에서 유의적으로 높은 것을 확인하였으나 적변에 따른 13년근 산양삼의 진세노사이드 함량 유의적인 차이는 확인할 수 없었다. 산양삼 생육특성과 진세노사이드 함량 간의 상관관계를 분석한 결과, 일반삼의 경우 진세노사이드 Rb2, Rc, Rd, Rf, Rg1이 산양삼의 지하부 길이와 유의적인 정의 상관관계를 보였고, 적변삼은 진세노사이드 Rd가 지하부 길이와는 유의적인 정의 상관관계, 주근직경과는 유의적인 부의 상관관계를 보였다. 본 연구에서는 7년근과 13년근 모두 적변에 따른 생육특성의 차이는 확인되지 않았고, 진세노사이드 함량은 7년근에서는 적변에 따라 유의적인 차이를 보였지만 13년근에서는 유의적인 차이가 없는 것을 확인하였다. 임가에서 산양삼은 7년근에 비해 13년근이 보다 고가에 거래되는 만큼 본 연구의 결과를 통해 적변삼에 대한 소비자들의 인식을 개선하여 산양삼 재배 농가의 소득 증대에 도움을 주고, 향후 산양삼의 품질규격을 정립하는 데 있어 유용한 정보를 제공할 수 있을 것으로 사료된다.