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- Title
Allelopathic potential and volatile compounds of Rosmarinus officinalis L. against weeds.
- Authors
FANG CHEN; SHAOLIN PENG; BAOMING CHEN; GUANGYAN NI; HUIXUAN LIAO
- Abstract
To test the Rosmarinus officinalis L. (Lamiaceae) allelopathic potential on seedling establishment of weeds, bioassay experiments were done with aqueous leachates from its fresh leaves, leaf volatiles and leaf litter leachates on seed germination and seedling growth of 3 weed species [(Eleusine indica (L.) Gaertn., Cynodon dactylon (L.) Pers. and Digitaria sanguinalis (L.) Scop.)]. The aqueous leachates from fresh leaves at 100 mg/mL, leaf litter leachates at 5 mg/mL and the volatiles at 10 mg/cm3 inhibited the seed germination and seedling growth of all 3- test weeds. In fresh leaves, stems, roots and litter of R. officinalis, 14, 10, 7 and 14 volatiles compounds were identified, respectively. To better understand the allelopathic effects from different parts or tissues of R. officinalis, we analyzed chemical composition of volatile compounds from fresh leaves, stem, root and litter of R. officinalis by GC-MS and GC. The major constituents of the volatiles were α-pinene (29.6, 25.7, 33.7 and 44.3%), 1,8-cineole (25.6, 13.2, 19.4 and 26.7%), piperitone (14.1, 20.5, 30.4 and 6.5%) from fresh leaves, stem, root and litter, respectively. The results indicated that R. officinalis had the potential as living plant and cover plant (or residues as mulch) for weed control. The study provided key information for the use of R. officinalis in sustainable management of weeds.
- Subjects
ROSEMARY; BIOLOGICAL assay; ALLELOPATHIC agents; LEACHATE; BERMUDA grass; WEED control
- Publication
Allelopathy Journal, 2013, Vol 32, Issue 1, p57
- ISSN
0971-4693
- Publication type
Article