Effect of Seed Dehydration and Temperature during Cold-Stratification on the Seed Quality of Panax ginseng C. A. Meyer
2017
Suh, S.J., NIHHS, RDA, Eumseong, Republic of Korea | Jang, I.B., NIHHS, RDA, Eumseong, Republic of Korea | Yu, J., NIHHS, RDA, Eumseong, Republic of Korea | Jang, I.B., NIHHS, RDA, Eumseong, Republic of Korea | Park, H.W., NIHHS, RDA, Eumseong, Republic of Korea | Seo, T.C., NIHHS, RDA, Eumseong, Republic of Korea | Kweon, K.B., NIHHS, RDA, Eumseong, Republic of Korea
Background: Dehisced ginseng seeds need to be stored at cold temperatures for around 3 months to break their physiological dormancy, and thus, to aid in gemination. In the presence of high moisture in such an environment, seed spoilage and pre-germination may lower seed quality and productivity. To improve seed quality during cold-stratification, the effects of seed dehydration and temperature were tested. Methods and Results: In early December, dehisced ginseng seeds were dehydrated at 4 different levels and stored at 2 degree Celsius -2 degree Celsius, and -20 degree Celsius for 3 months. Germination was carried out on the filter papers moistened with distilled water; emergence of root, shoot, and seed spoilage were assessed. Seed viability was examined by the tetrazolium test. More than 90% of the seeds stored at 2 degree Celsius and -2 degree Celsius without drying or endocarp dehydration germinated, but seeds that were dehydrated to have a moisture content (MC) below 31% showed poor germination and lost their viability. In addition, the seeds stored at -20 degree Celsius failed to show effective germination. Conclusions: Seed storage after endocarp dehydration might help to improve seed quality and increase seedling's ability to stand during the spring-sowing of ginseng.
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