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Evaluating Cold Resistance of Ginseng Germplasm using Chlorophyll Fluorescence
Ick Hyun Jo(조익현),Woo Jong Jang(장우종),Jung Woo Lee(이정우),Sung Min Jung(정성민),Na Young Kwon(권나영),Young Chang Kim(김영창),Chi Eun Hong(홍지은),Kyong Hwan Bang(방경환),Jang Uk Kim(김장욱),Dong Hwi Kim(김동휘) 한국약용작물학회 2022 한국약용작물학회 학술대회논문집 Vol.2022 No.1
감마선 처리가 인삼 종자의 개갑, 발달, 생존 및 생육에 미치는 영향
이정우(Jung-Woo Lee),조익현(Ick-Hyun Jo),홍지은(Chi-Eun Hong),방경환(Kyong-Hwan Bang),김장욱(Jang-Uk Kim) 한국육종학회 2020 한국육종학회지 Vol.52 No.1
Ginseng (Panax ginseng) is a self-fertilized crop, and all ginseng cultivars developed until now have been bred by pure-line selection. Ginseng has few genetic variations and lacks diversity in genetic resources. To obtain genetic resources with useful traits, mutations must be artificially induced. In this study, indehiscent seeds from ginseng landrace were treated with 20 to 400 Gy of gamma rays for 24 hours to determine the optimal dose for mutation breeding. Results showed no significant differences in seed dehiscence rates among the 0 Gy (control) to 80 Gy groups. However, above 100 Gy, the dehiscence rate sharply decreased as the radiation dose increased. Seed development below 40 Gy was superior to that of control but declined rapidly above 60 Gy. The seedling survival rate decreased significantly at 60 Gy (less than 50% compared to that of the control), and most seeds did not survive above 100 Gy. We observed a significant reduction in the growth of seedlings irradiated above 60 Gy. The above results suggest that a suitable gamma-ray dose for inducing mutagenesis in indehiscent ginseng seeds is 40 Gy.