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Allelopathic Potential of Aqueous Extracts from Fleagrass ( Adenosma buchneroides Bonati) against Two Crop and Three Weed Species

Author

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  • Chen Wang

    (Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
    Yunnan Key Laboratory for Wild Plant Resources, Department of Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China)

  • Jinfeng Qi

    (Yunnan Key Laboratory for Wild Plant Resources, Department of Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China)

  • Qing Liu

    (Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun 666303, China)

  • Yuhua Wang

    (Yunnan Key Laboratory for Wild Plant Resources, Department of Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China)

  • Hongbin Wang

    (Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China)

Abstract

This study aimed to assess the phytotoxic potential of fleagrass ( Adenosma buchneroides ) on weeds and crops. We assessed the effects of applying aqueous extracts of fleagrass on the seed germination and seedling growth of three weeds ( Bidens pilosa, Paspalum thunbergia, and Bromus japonicus ) and two crops ( Oryza sativa and Zea mays ). The influence of six doses of fleagrass aqueous extract on seed germination and seedling growth was assessed through a Petri dish experiment. The aqueous extract of fleagrass was qualitatively characterized using widely targeted metabolomics analysis and found to mainly comprise flavonoids, phenolic acids, alkaloids, polysaccharides, phenylpropanoids, terpenoids, phenolamides, and quinones. The mean IC 50 for crop seed germination was 168,796, and the mean IC 50 for weed seed germination was 11,454. The inhibition effect on the tested species, from highest to lowest, followed the order of B. japonicus > B. Pilosa > P. thunbergii > O. sativa > Z. mays. These results indicate the remarkable species-specific sensitivity of seed germination and seedling growth to fleagrass extract treatment, and that crops are more tolerant than weeds. Elucidation of the details of the fleagrass–weed/crop interaction can serve as a basis for intercropping fleagrass with crops in weed management strategies aimed at controlling weeds.

Suggested Citation

  • Chen Wang & Jinfeng Qi & Qing Liu & Yuhua Wang & Hongbin Wang, 2022. "Allelopathic Potential of Aqueous Extracts from Fleagrass ( Adenosma buchneroides Bonati) against Two Crop and Three Weed Species," Agriculture, MDPI, vol. 12(8), pages 1-11, July.
    • Handle: RePEc:gam:jagris:v:12:y:2022:i:8:p:1103-:d:873197
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    References listed on IDEAS

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    1. Euro Pannacci & Marco Masi & Michela Farneselli & Francesco Tei, 2020. "Evaluation of Mugwort ( Artemisia vulgaris L.) Aqueous Extract as a Potential Bioherbicide to Control Amaranthus retroflexus L. in Maize," Agriculture, MDPI, vol. 10(12), pages 1-13, December.
    2. Pavol Findura & Sławomir Kocira & Patryk Hara & Anna Pawłowska & Agnieszka Szparaga & Plamen Kangalov, 2020. "Extracts from Artemisia vulgaris L. in Potato Cultivation—Preliminary Research on Biostimulating Effect," Agriculture, MDPI, vol. 10(8), pages 1-14, August.
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