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- Title
New bioassay method to study the allelopathic activity of sugar lungwort (Pulmonaria saccharata Mill.).
- Authors
Chernyaeva, Ekaterina V.; Viktorov, Vladimir P.
- Abstract
We develop new method for the bioassay of allelopathic activity of soil and plant materials. The allelochemicals were detected in the sugar lungwort (Pulmonaria saccharata Mill.) plant by the gradient bioassay and studied the allelopathic activity of soil under and around the individual plants. In a pot experiment, we studied the effects of 0.2 % and 0.5 % (w/v) of dry leaves and rhizomes of Pulmonaria saccharata Mill. as mulch on 3-acceptor plants [red clover (Trifolium pratense L.), tall fescue (Festuca arundinacea Schreb.) and Prunella vulgaris L.] on germination, growth, dry weight and water content. A dual effect was observed in the experiments. Depending on the concentration, the allelochemicals stimulated or inhibited the germination and initial growth of seedlings. Low mulch rates 0.2 % (w/v) stimulated the growth (35-46 %) in 1-5 days after sowing. However, at the subsequent stages of development of acceptor plants, growth was inhibited, water balance and assimilation were affected. The new bioassay made it possible to investigate the mechanism underlying the allelopathic activity of sugar lungwort and the results suggested that allelochemicals from this plant could be used as an herbicide.
- Subjects
BIOLOGICAL assay; TALL fescue; PLANT development; SUGAR; ALLELOCHEMICALS; PLANT-soil relationships; RED clover; TALL buildings
- Publication
Allelopathy Journal, 2020, Vol 51, Issue 1, p93
- ISSN
0971-4693
- Publication type
Article
- DOI
10.26651/allelo.j/2020-51-1-1293