Evaluation of Pelargonium graveolens essential oil to prevent gray mold in rose flowers
The main pathogen that deteriorates the quality of rose flowers during the postharvest stage belongs to the fungal genus Botrytis. The chemical products used to control the disease caused by this pathogen have been losing effectiveness due to the appearance of resistance. The present study descri...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Polish Academy of Sciences
2022-06-01
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| Series: | Journal of Plant Protection Research |
| Subjects: | |
| Online Access: | https://doi.org/10.24425/jppr.2022.141353 |
| Summary: | The main pathogen that deteriorates the quality of rose flowers during the postharvest stage
belongs to the fungal genus Botrytis. The chemical products used to control the disease
caused by this pathogen have been losing effectiveness due to the appearance of resistance.
The present study describes the in vitro and in vivo fungicidal activity of Pelargonium graveolens
essential oil and its chemical composition. The essential oil was obtained by hydrodistillation,
and the in vitro fungicidal activity was determined by agar diffusion assays,
showing 100% of fungal growth inhibition at 250 ppm. In vivo assays were performed on
Rosa grandiflora flowers treated with 250 ppm of P. graveolens essential oil, using distillate
water as a positive control and the commercial fungicide carbendazim as a negative one.
No significant differences were obtained between the treatment with the essential oil and
the treatment with the commercial fungicide. The chemical profile of the essential oil was
determined by GC-MS. The main compounds detected were geraniol (24.89%), citronellol
(19.50%), linalool (10.92%) and γ-eudesmol (8.93%). These results encourage the possible
use of P. graveolens essential oil for the control of B. cinerea in rose flowers. |
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| ISSN: | 1427-4345 1899-007X |