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- Title
Leaf extract effects of Vochysia divergens on lettuce and tomato.
- Authors
OLIVEIRA, A. K. M.; RIBEIRO, J. W. F.; FONTOURA, F. M.; MATIAS, R.
- Abstract
In laboratory bioassays, the phytochemical activity of leaf extracts (0, 2.5, 5, 10 and 20%) of Vochysia divergens Cambará (Pohl) was investigated on germination and growth of lettuce and tomato. In all concentrations, the pH of extract was 4.3 ± 0.3, electrical conductivity was 14.9 to 26.1 μScm-1 and soluble solids concentration (expressed in degrees Brix) was 0.8. The extract concentrations did not influence the lettuce seed germination but reduced the seedlings vigour. The development of primary roots and aerial part was inhibited. The tomato seeds germination was affected at 20% concentration. The vigour of germination was greatly reduced at all concentrations and the development of primary roots and aerial part was notably impeded. Chemical analysis of extract revealed presence of phenolic compounds (FC= 4.16 to 9.32 μg/g), tannins, flavonoids (F= 2.44 to 4.17 μg/g), coumarins, steroids and free triterpenes.
- Subjects
VOCHYSIACEAE; CYTOCHEMICAL bioassay; PHYTOCHEMICALS; TOMATO breeding; LETTUCE; PHENOLS; COUMARINS; ANALYTICAL chemistry
- Publication
Allelopathy Journal, 2013, Vol 31, Issue 1, p129
- ISSN
0971-4693
- Publication type
Article