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Hydroxychalcones as Herbicides
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DOI：10.3390/agronomy15030572.png)
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摘要
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Efforts to develop weed management alternatives are urgently required due to various challenges, such as declining crop yields, rising production costs, and the growing prevalence of herbicide-resistant weed species. Chalcones occur in nature and have phytotoxic potential and concise synthesis; additionally, they are multifunctional, with diverse biomolecular targets and a broad spectrum of biological activities. This study sought to assess the herbicidal potential of 3 '-hydroxychalcones against weed species under laboratory conditions. Their effects were investigated using germination bioassays, early growth measurements, and the seedling vigor index, all prepared with a concentration of 1 x 10-3 mol L-1 3 '-hydroxychalcones. 3 '-Hydroxy-4-pyridyl-chalcone caused the greatest inhibition (81%) of the seedling length in Urochloa decumbens. Other 3 '-hydroxychalcones also caused large initial growth reductions, such as 3 '-hydroxy-4-pyridyl-chalcone (75%) and 3 '-hydroxy-4-nitrochalcone (68%) in Digitaria insularis and 3 '-hydroxy-4-bromochalcone (73%) in Raphanus raphanistrum. The greatest reduction in the seedling vigor index was 81% in D. insularis treated with the 3 '-hydroxy-4-bromochalcone. The same 3 '-hydroxychalcone caused an 80% reduction in Amaranthus viridis. In conclusion, 3 '-hydroxychalcones exhibit herbicidal activity, suggesting they could serve as a solution for future weed management strategies.
Keyword:
phytotoxicity
hydroxylated chalcones
herbicidal activity
期刊
A
IF:
3.4
论文数:
1.7W
被引数:
5.0W
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引用论文
Structure Simplification of Natural Products as a Lead Generation Approach in Agrochemical Discovery
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