• Korean Journal of Medicinal Crop Science
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• v.27 no.3
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• pp.167-172
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• 2019

Background: Angelica acutiloba Kitagawa belongs to the flowering plant family Apiaceae. Its young leaves are consumed as a vegetable, and its roots have medicinal properties. This study was conducted to analyze the seed germination characteristics of A. acutiloba according to its ripening stages. Methods and Results: The seeds were harvested from a research farm managed by the Department of Herbal Crop Research, Rural Development Administration in 2018 and were divided into six groups according to their specific gravities. In particular, we studied the effect of harvesting periods and umbel orders on seed characteristics. The results showed that the rates of germination, emergence, and early growth improved as the specific gravity of the seeds increased. In addition, the germination rates of the seeds harvested in mid July and early August were significantly higher than those harvested in the other seasons, and the seeds obtained from the first floret had the greatest mass and weight. Conclusions: In this study, we demonstrated that it is possible to improve the germination rate by appropriate selection of seeds and harvesting period both of which are closely related to seed maturity.

• Korean Journal of Plant Resources
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• v.33 no.2
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• pp.86-92
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• 2020

This study was conducted to analyze ripening characteristics of the seed according to days after flowering. The seeds were harvested on land located in the Department of Herbal Crop Research in Rural Development Administration in 2019. Seed weight and germination rate were investigated according to days after flowering and the embryo:seed ratio was examined during the fruiting process. The results showed that the weight increased significantly by the days after flowering at each inflorescence and the seed began to germinate at different time. Further, given the embryo:seed ratio, we found that embryo continue to grow in the seed. Because Angelica acutiloba (Siebold & Zucc.) Kitagawa bloom in various inflorescences, the stage of embryonic development of the seeds can affect the germination of seed. Based on our results, the key seed harvest period for good seed is 50 to 70 days after flowering.