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KMID : 1098420170250040209
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Korean Journal of Medicinal Crop Science
2017 Volume.25 No. 4 p.209 ~ p.216
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Effect of Seed Dehydration and Temperature during Cold-Stratification on the Seed Quality of Panax ginseng C. A. Meyer
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Suh Soo-Jung
Jang In-Bae
Yu Jin
Jang In-Bok
Park Hong-Woo
Seo Tae-Cheol
Kweon Ki-Bum
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Abstract
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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℃- 2℃, and ?20℃ 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℃ and ?2 ℃ 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℃ 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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KEYWORD
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Panax ginseng C. A. Meyer, Cold-Stratification, Dehydration, Dormancy, Germination, Moisture Content, Seed Viability, Spring-Sowing
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