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KMID : 1098420190270060390
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Korean Journal of Medicinal Crop Science
2019 Volume.27 No. 6 p.390 ~ p.396
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Optimum Storage Temperature for Spring Sowing of Panax ginseng Seeds
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Suh Soo-Jung
Jang In-Bae
Jang In-Bok
Moon Ji-Won
Yu Jin
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Abstract
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Background: Usually ginseng seeds are sown during autumn and spring. Sowing in spring often results in poorer seedling establishment than in autumn. One of the reasons for poor germination could be cold-treatment condition for breakage of physiological dormancy during winter. Here we tested the effects of storage temperature used during cold treatment on germination.
Methods and Results: Germination properties were observed after dehiscent seeds were stored as wet and dry at 2℃, -2℃, -3.5℃ and alternating temperature (AT). Seed dryness and storage temperature affected germination properties (p < 0.01). Wet and AT condition germinated highest, and wet and -3.5℃ condition germinated lowest, which was 91.2% and 1.4% respectively. Mean germination time (MGT) of the wet and AT condition was faster than other treatments at 2.4 days, and the dry and -2℃ condition was the longest. Germination performance index (GPI) was highest for wet and AT condition (37.7%) and the lowest for wet and -3.5℃ condition (0.5%). The growth of above-ground and below-ground were the best for wet and 2℃ condition, and wet seeds showed better growth than dry seeds (p < 0.01).
Conclusions: For cold treatment, ginseng seeds may not be stored below -2℃ for successful germination during spring sowing.
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KEYWORD
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Panax ginseng C. A. Meyer, Dormancy, Dry Seeds, Germination, Spring-sowing, Storage, Temperature
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