Herbicidal activity of cineole derivatives
| Autor: | Allan R. Knight, Bernard Dell, Allan F. M. Barton |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Lolium rigidum
Carboxylic acid ved/biology.organism_classification_rank.species Raphanus Germination chemistry.chemical_compound Botany Lolium Oils Volatile Organic chemistry chemistry.chemical_classification Eucalyptus Eucalyptol biology ved/biology Herbicides Myrtaceae food and beverages General Chemistry biology.organism_classification Cyclohexanols chemistry Eucalyptus oil Monoterpenes Phytotoxicity General Agricultural and Biological Sciences |
| Zdroj: | Journal of agricultural and food chemistry. 58(18) |
| ISSN: | 1520-5118 |
| Popis: | Essential oils and their constituents have potential as ecologically acceptable pesticides that may also have novel modes of action. In this work hydroxy and ester derivatives of the naturally occurring monoterpenoids 1,8-cineole 3, the main component in most eucalyptus oils, and 1,4-cineole 4 were prepared and their pre-emergence herbicidal activity against annual ryegrass (Lolium rigidum) and radish (Raphanus sativus var. Long Scarlet) investigated in laboratory-based bioassays. 1,8-Cineole, eucalyptus oil and all derivatives showed a dose-dependent herbicidal activity against annual ryegrass and radish with many of the derivatives showing improved herbicidal activity relative to 1,8-cineole and high-cineole eucalyptus oil. Increased activity of cineole ester derivatives compared to their associated hydroxy-cineole and carboxylic acid was not observed. No relationship between lipophilicity of the carboxylic acid portion of cineole ester derivatives and herbicidal activity was observed. The results indicate that these cineole derivatives could be environmentally acceptable herbicides. |
| Databáze: | OpenAIRE |
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