Effect of umbel order and umbellet position on the production and characteristics of seeds and on the development and growth of seedlings in Angelica acutiloba Kitagawa
2007
Phip, N.T.(Chiba Univ., Matsudo (Japan). Faculty of Horticulture) | Nojima, H. | Tashiro, T
Angelica acutiloba Kitagawa, Touki, is a medicinal plant belonging to the Apiaceae family. Flowering is characterized by a series of sequentially formed umbels producing seeds. The present study was carried out to analyze the effect of the umbel order and umbellet position on: (i) seed production characteristics, (ii) seed germination, (iii) seedling emergence, and (iv) seedling growth. The results showed that seed development and maturity occurred earlier in the order of primary secondary tertiary umbels. Accordingly, the seed weight value was higher in the order of primary secondary tertiary umbels, but was not different among the umbellet positions. Seeds were mainly produced on the secondary umbels. The seed germination percentage was very high (90%) at the optimum temperature, and the seedling emergence percentage was high (70%) under greenhouse conditions. Seed germination and seedling emergence were not affected by the umbel order and umbellet position.
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