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KMID : 1098420180260050401
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Korean Journal of Medicinal Crop Science
2018 Volume.26 No. 5 p.401 ~ p.407
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Effects of Storage Temperature and Seed Treatment on Emergence and Growth Properties of Panax ginseng at Spring-sowing
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Suh Soo-Jung
Yu Jin
Jang In-Bok
Moon Ji-Won
Lee Sung-Woo
Jang In-Bae
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Abstract
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Background: In Korea, seeds of Panax ginseng C. A. Meyer need to be stored under cold temperature and high humidity condition for months to break physiological dormancy, making storage difficult until spring-sowing. This study was conducted to test the effects of seed storage conditions and seed treatment on the emergence of seedling after spring-sowing in a nursery greenhouse.
Methods and Results: After dehiscence, endocarp dried seeds in mild or completely, and wet seeds were stored in 2℃ and ?3.5℃ during winter. Storage at ?3.5℃ resulted in a lower emergence rate (ER) than that at 2℃, and additional cold (2℃) treatment before or after storage at ?3.5℃ increased the ER. Endocarp dehydration prevented pre-germination at 2℃ storage and increased the ER of seeds stored at ?3.5℃. ER was also dependent on the batch of seeds. However, seed treatments before sowing had only limited effects on ER. Root loss was the main reason for damping-off; prolonged cold storage of seeds increased damping-off, as the detection of pathogens was not high.
Conclusions: This study showed that storage conditions such as temperature and moisture content of seeds, affect the ER after spring-sowing and vitality of seedlings, suggesting further attention on seed control for secure seedling stands after spring-sowing.
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KEYWORD
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Panax ginseng C. A. Meyer, Damping-off, Emergence, Nursery Greenhouse, Seed Storage, Seed Treatment, Spring-sowing
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