사이토카이닌과 에틸렌, 프로피코나졸 복합처리에 따른 고년근 인삼 생육 및 진세노사이드 함량 변화
Effects of Cytokinin, Ethylene and Propiconazole Combinational Treatment on Growth and Ginsenoside Content of 4-year-old Panax ginseng C. A. Meyer
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Background: Korean ginseng (Panax ginseng C. A. Meyer) is recognized for its medicinal properties. Because ginseng is cultivated for 4 – 6 years in one place, the growing environment can affect ginseng growth. Specifically, root growth can be altered by plant hormones, which in turn, affects crop yields. Among plant hormones, cytokinin is known to increase secondary growth by promoting cambium cell division. In addition, ethylene and propiconazole can regulate root development. In this study, the effects and interactions of cytokinin, ethylene, and propiconazole on four-year-old ginseng plants were analyzed. Methods and Results: Ginseng plants were treated with each hormone every two weeks. Cytokinin (6-benzylaminopurine, 500 µM) was applied to the soil, and 100 nM of propiconazole or 100 µM of ethylene was applied in combination with cytokinin. Root width and weight, and ginsenoside content of each plant were the highest when cytokinin and propiconazole were applied together. The highest number of buds was observed under cytokinin treatment. However, no significant differences were observed in shoot growth, except for stem width. Conclusions: The greatest effect on root development was observed when cytokinin and propiconazole were applied together, and ginsenoside content increased following hormone treatment.
Abstract
Background: Korean ginseng (Panax ginseng C. A. Meyer) is recognized for its medicinal properties. Because ginseng is cultivated for 4 – 6 years in one place, the growing environment can affect ginseng growth. Specifically, root growth can be altered by plant hormones, which in turn, affects crop yields. Among plant hormones, cytokinin is known to increase secondary growth by promoting cambium cell division. In addition, ethylene and propiconazole can regulate root development. In this study, the effects and interactions of cytokinin, ethylene, and propiconazole on four-year-old ginseng plants were analyzed. Methods and Results: Ginseng plants were treated with each hormone every two weeks. Cytokinin (6-benzylaminopurine, 500 µM) was applied to the soil, and 100 nM of propiconazole or 100 µM of ethylene was applied in combination with cytokinin. Root width and weight, and ginsenoside content of each plant were the highest when cytokinin and propiconazole were applied together. The highest number of buds was observed under cytokinin treatment. However, no significant differences were observed in shoot growth, except for stem width. Conclusions: The greatest effect on root development was observed when cytokinin and propiconazole were applied together, and ginsenoside content increased following hormone treatment.
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