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Beitrag zur Kenntnis der Resistenzphänomene einzelner Pflanzen gegenüber dem phytotoxischen Wirkstoff Simazin

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Summary

2,4-Dihydroxy-7-methoxy-1,4-benzoxazin-3-one (III), isolated from corn sap, detoxifies the herbicide Simazine, 2-chloro-4,6-bis-ethylamino-s-triazine,in vitro. 2,4-Dihydroxy-1,4-benzoxazin-3-one and the corresponding natural precursors of it and of (III), glucosides, behave in the same manner. It is very likely, therefore, that these glucosides and aglucones play a role in the resistance phenomena of some plant species against Simazine and related phytotoxic compounds. 6-Methoxybenzoxazolone and benzoxazolone, derived from the abovementioned benzoxazinones by heating, do not interfere with Simazine.

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Roth, W., Knüsli, E. Beitrag zur Kenntnis der Resistenzphänomene einzelner Pflanzen gegenüber dem phytotoxischen Wirkstoff Simazin. Experientia 17, 312–313 (1961). https://doi.org/10.1007/BF02158173

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