Effects of light, temperature and water stress on germination of Artemisia sphaerocephala
Zheng, Yuanrun Xie, Zhixiao Gao, Yong Jiang, Lianhe Xing, Xuerong Shimizu, Hideyuki Rimmington, Glyn M.
Zheng, Yuanrun
Xie, Zhixiao
Gao, Yong
Jiang, Lianhe
Xing, Xuerong
Shimizu, Hideyuki
Rimmington, Glyn M.
Citations
Altmetric:
Other Names
Location
Time Period
Advisors
Original Date
Digitization Date
Issue Date
2005-05
Type
Article
Genre
Keywords
Subjects (LCSH)
Citation
Zheng, Y., Xie, Z., Gao, Y., Jiang, L., Xing, X., Shimizu, H., and Rimmington, G.M., 2005, Effects of light, temperature and water stress on germination of Artemisia sphaerocephala: Annals of Applied Biology vol. 146, no. 3, p. 327-335, doi: 10.1111/j.1744-7348.2005.040039.x.
Abstract
Artemisia sphaerocephala is widely used for vegetation rehabilitation, but its germination is very low after air seeding of achenes. We explored effects of light, temperature and water stress on germination. Results show that both final percent germination and germination rate were increased by temperature increment, with the highest values occurring at 15: 25 degrees C (night: day) in dark and 20: 30 degrees C under light. Light inhibited germination, especially at lower alternating temperatures (5: 15 degrees C and 10: 20 degrees C). The alternating temperature window for germination was slightly narrower under light than in dark, and germination was slower under light than in dark across the temperature range. Achenes incubated in the dark and at constant temperatures had over 80% germination at 10 to 25 degrees C, with an optimum at 20 degrees C. Under dark and 25?mol m-2 s-1 light flux density at 10: 20 degrees C, final percent germination was over 94%, but if the light flux density was increased to 100 and 400 ?mol m-2 s-1, final percent germination was significantly lower (64% and 38% respectively). However, achenes could keep their germination capacity for a long time (over 50 days) and germinate well after going back to the dark. Germination was also lower under water stress and few achenes germinated at -1.4 MPa. This was more pronounced at high and low temperatures. Given these findings and the prevailing climatic characteristics, the most suitable time for air seeding of achenes may be mid-May.
Table of Contents
Description
Click on the DOI link below to access the article (may not be free).
Publisher
Wiley
Journal
Annals of Applied Biology
Book Title
Series
Digital Collection
Finding Aid URL
Use and Reproduction
Archival Collection
PubMed ID
DOI
ISSN
0003-4746