Germination of Witchweed (Striga lutea Lour.): Isolation and Properties of a Potent Stimulant

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Science  02 Dec 1966:
Vol. 154, Issue 3753, pp. 1189-1190
DOI: 10.1126/science.154.3753.1189


A crystalline germination stimulant (trivial name strigol) for the rootparasite, witchweed (Striga lutea Lour.), has been isolated from cotton rootexudates and characterized as a C19H22O6 compound. Although apparently different from known plant hormones, the stimulant is active at hormonal levels, causing germination at concentrations less than 1O-5 part per million.

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