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출아기 인삼 동결 피해가 지하부 생육 및 사포닌 함량에 미치는 영향

Influence of Freezing Damage during Sprouting Periods on Root Growth Characteristics and Saponin Contents in Panax Ginseng C. A. Meyer

유진|김동휘|장인배|서수정
한국약용작물학회|2022.04|한국약용작물학회지 (KOREAN JOURNAL OF MEDICINAL CROP SCIENCE)|제30권 제2호|pp. 99-107

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참고문헌

키워드

SaponinPanax ginseng C. A. MeyerAbnormal Climate ChangeDamage DegreeFreezing DamageLate Spring

초록

Background: Abrupt temperature decline to freezing temperature in late spring results in severe damage to ginseng. Here we artificially applied freezing stress on ginseng and investigated the damage effects on its growth and saponin contents. Methods and Results: Freezing stress was applied on 2-year-old ginseng in the pots or 3-year-old ginseng in the field. After 1 month of freezing treatment, the damage degree of the shoot was evaluated as ‘dead’, ‘damage > 50%’, ‘damage < 50%’, and ‘healthy’. Roots were harvested after 4 months, and the growth properties were examined according to the shoot damage degree. In both experiments, there was a clear difference in root length, root diameter, and root weight in the order of shoot damage degree. The correlation coefficient between plant height and root weight was 0.979, and the regression model was obtained as Y = 0.5211 × e0.0806X, where Y is root weight and X is shoot length (R2 = 0.9947). Total saponin content was the highest in ‘healthy’. Conclusions: Freezing stress in the early stage of ginseng had significant effect on root growth according to the remaining leaf area. We assume that these results will help evaluating the damage caused by freezing stress.

Abstract

Background: Abrupt temperature decline to freezing temperature in late spring results in severe damage to ginseng. Here we artificially applied freezing stress on ginseng and investigated the damage effects on its growth and saponin contents. Methods and Results: Freezing stress was applied on 2-year-old ginseng in the pots or 3-year-old ginseng in the field. After 1 month of freezing treatment, the damage degree of the shoot was evaluated as ‘dead’, ‘damage > 50%’, ‘damage < 50%’, and ‘healthy’. Roots were harvested after 4 months, and the growth properties were examined according to the shoot damage degree. In both experiments, there was a clear difference in root length, root diameter, and root weight in the order of shoot damage degree. The correlation coefficient between plant height and root weight was 0.979, and the regression model was obtained as Y = 0.5211 × e0.0806X, where Y is root weight and X is shoot length (R2 = 0.9947). Total saponin content was the highest in ‘healthy’. Conclusions: Freezing stress in the early stage of ginseng had significant effect on root growth according to the remaining leaf area. We assume that these results will help evaluating the damage caused by freezing stress.

참고문헌 (26)

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