Effects of different treatments on seed germination of Swertia davidii
- Author:
Jian-Cheng LIU
1
Author Information
1. Normal College of Jishou University
- Publication Type:Journal Article
- Keywords:
GA3;
Germination;
Seed;
Seed longevity;
Swertia davidii Franch
- From:
Chinese Traditional and Herbal Drugs
2011;42(2):367-371
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To evaluate seed morphology of Swertia davidii and the effects of different treatments on seed germination, and to provide a scientific basis for seeding and artificial cultivation of S.davidii. Methods: Seed morphology was observed by microscope and seed germination rates were recorded and analyzed statistically, through setting conditions including different culture temperatures, different light qualities, different seed storage times, and soaking treatment with different concentration of GA3 and KNO 3. Results: S. davidii seeds were small with 0.049 5 g for thousand grain wight (TGW). The suitable temperature range of seed germination was 14-23 °C, and the optimal temperature was 18 °C. Seed germination could be affected under different light qualities and full darkness conditions, in which red light was the most conductive to seed germination, but full darkness was the least conductive to that. After soaking treatment with different concentration of GA3 and KNO3, not only seed growth could be significantly promoted, but also seed germination rates and germination index were affected. When the seeds were stored at room temperature, the seed longevity of S. davidii is only about five months, however, it can be increased at low temperature. Conclusion: The study on seed germination of S. davidii is first reported, which shows the important guidance for seeding and artificial cultivation of S. davidii.
