Seed Harvesting and Seedling Raising Methods for Seedling Production in Angelica dahurica
2022
Nam, H.H. | Kim, K.S. | Kim, B.S.
BACKGROUND: Angelica dahurica is a perennial plant of the Apiaceae family, and its root is used as a medicine named ‘Baek-Ji’. However, there are no registered varieties and seed production systems to date. This study was carried out to investigate the proper seed harvest time and seedling raising method for plug seedling production in A. dahurica. METHODS AND RESULTS: Seeds were harvested at approximately five-day intervals from 5 to 60 days after the flowering period, and seed yield and 1,000 grain weight were determined. For plug seedling production, seedlings were grown in different plug cell sizes and for different raising periods. Angelica dahurica flowered on August 1, and the seed yield was the highest at 40 days after flowering. Furthermore, 1,013℃ of accumulated temperature from the flowering period was required to obtain the maximum seed yield. Seedling growth by raising method tended to increase as cell size and raising period increased. The change of dry weight according to cell size and days after seeding were well expressed with an exponential function. Root balls were formed 63 days after seeding. However, there was no difference in the rooting rate and root yield based on the seedling raising method used. CONCLUSIONS: Seeds of A. dahuica should be harvested 40 days after flowering to obtain the highest yield. On hundred five cells per tray and 63 days of raising were appropriate for optimum seedling raising efficiency and ease of transplanting.
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