The Absorption of Fenitrothion During Germination of Stratified and Nonstratified White Pine Seeds and Identification of Metabolites Formed

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Abstract
White pine seeds, P. strobus were treated with a 1.5 × 10−4 M solution of fenitrothion, 0,0-dimethyl-0-(4-nitro-3-methyl-phenyl)-phosphorothioate. The seed coat, endosperm, and embryo were monitored for residues of the insecticide and metabolites during germination and early seedling growth. Absorption and accumulation of fenitrothion, and accumulation of fenitro–oxon, and S-methyl fenitrothion were demonstrated in the endosperm and embryos of germinated seeds and seedlings. Neither the parent compound not its metabolites adversely affected the later development of the pine seedlings.

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