Allelochemic Effects of Leaf Extracts of Ambrosia trifida (Compositae)

Abstract

Aqueous extracts from leaves of giant ragweed reduced growth in sorghum seedlings, and reduced germination in sorghum and radish. Five phenolic compounds from these extracts were isolated and characterized, but not identified. Germination bioassays using these compounds demonstrated that each of the five depressed germination, and the depression related to concentration. It is suggested that the water-soluble allelochemics from giant ragweed contribute to any interference effect this weed may have on growth of associated species.

Department(s)

Academic Affairs

Document Type

Article

DOI

https://doi.org/10.2307/3670522

Keywords

sorghum, seed germination, radishes, seedlings, bioassay, acid soils, organic soils, plant growth

Publication Date

10-10-1979

Journal Title

The Southwestern Naturalist

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