The physiological characteristics of dormancy and germination in the seeds of useful medicine plant, Angelica tenuissima, in Korea
Angelica tenuissima Nakai, which belongs to the Umbelliferae family, is a perennial plant native to Korea, China, Siberia, and Japan. The present study was conducted to determine the effects of gibberellic acid (GA3; 0, 10, 100, or 1000 mg L‑1), incubation temperature (5, 15, 20, or 25°C), and cold stratification (4°C, 0, 4, 8, and 12 weeks) on A. tenuissima seed germination. The seeds were transferred to germination conditions (25°C, 16-h photoperiod with fluorescent lamps at 25 μmol m‑2 s‑1) at 24 h post-GA3 treatment. The seeds imbibed water easily without any physical problems. Angelica tenuissima seeds were found to exhibit morphological dormancy (MD), which is characterized by underdeveloped embryos during seed dispersal. After 4 weeks at 25°C, 33.3% of A. tenuissima seeds germinated. In total, 85% of the seeds that were incubated under cold conditions germinated within 3 weeks after being transferred to 25°C. In addition, GA3 treatment promoted the germination of A. tenuissima seeds. Therefore, A. tenuissima seeds exhibit morphophysiological seed dormancy.
Kim, H.J., Ko, C., Ryu, S.H., Lee, A., Kim, J.H., Kim, S.Y. and Chung, J. (2020). The physiological characteristics of dormancy and germination in the seeds of useful medicine plant, Angelica tenuissima, in Korea. Acta Hortic. 1291, 173-182
cold stratification, imbibition test, morphophysiological dormancy, seed dormancy, Umbelliferae