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- Title
Identification and allelopathic effects of 1,8-cineole from Eucalyptus urophylla on lettuce.
- Authors
Xian Qiu; Shixiao Yu; Yongfan Wang; Bizhen Fang; Chuxiong Cai; Shiping Liu
- Abstract
A fast and effective method for the extraction, separation and identification of volatile compounds from intact Eucalyptus urophylla leaves has been developed by applying the SPME-GC-MS technique. Twenty seven terpenoids were identified in the headspace volatiles, dominated by 1,8-cineole. 1,8-cineole was assayed on Lactuca sativa (lettuce) to test its allelopathic effect. The lettuce seed germination rate decreased with the increase in concentration of 1,8-cineole, whereas the final germination (%) was affected at much higher concentration (0.30 mmol/L). The 1,8- cineole suppressed the seedling growth and fresh weight in dose-dependent manner and the root elongation proved the most sensitive parameter. These findings show that 1,8-cineole plays important role in allelopathic effects E. urophylla leaf.
- Subjects
EUCALYPTUS; LETTUCE; ALLELOPATHIC agents; VOLATILE organic compounds; TERPENES; GERMINATION
- Publication
Allelopathy Journal, 2010, Vol 26, Issue 2, p255
- ISSN
0971-4693
- Publication type
Article