• Title/Summary/Keyword: ${\beta}$-resorcyclic acid

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Allelopathic Activity and Determination of Allelochemicals from Sunflower (Helianthus annuus L.) Root Exudates II. Elucidation of Allelochemicals from Sunflower Root Exudates (해바라기(Helianthus annuus L.) 근분비물질(根分泌物質)의 타감작용(他感作用) 및 타감물질(他感物質)의 동정(同定) II. 타감성(他感性) 해바라기 근분비물질(根分泌物質)의 동정(同定))

  • Park, K.H.;Moody, K.;Kim, S.C.;Kim, K.U.
    • Korean Journal of Weed Science
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    • v.12 no.2
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    • pp.173-182
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    • 1992

  • Regardless of the test species, germination was adversely affected by the different concentrations of the acidic and neutral fractions of sunflower root exudates while the basic and aqueous fractions had no effect on germination. In both test species, root lengths were inhibited slightly more than shoot lengths. Significant reduction in fresh weights of the test species was observed when the test species were treated with the acidic and neutral fractions but not with the basic and aqueous fractions. Six compounds, hydroquinone, ${\beta}$-resorcyclic acid, vanillic acid, caffeic acid, salicylic acid, and quercetin, were characterized from the acidic fraction. Seven compounds, hydroquinone, gentisic acid, ${\beta}$-resorcyclic acid, vanillic acid, caffeic acid, ferulic acid, and quercetin, were elucidated from the neutral fraction.

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