Absorption, translocation, and residue of 14C-ZJ0273 in oilseed rape.
A study was conducted to investigate the absorption and translocation of a novel herbicide (14)C-ZJ0273 in the seedlings and the residue in the mature plants of oilseed rape. Total absorption of (14)C-ZJ0273 into seedlings and mature plants of oilseed rape reached 39.7% and 34.2% at the end of the experiments, respectively. Movement of the absorbed (14)C in the plants was both acropetal and basipetal. However, more than 89.2% of the absorbed (14)C remained in the treated leaf of the tested plants. The distribution of the absorbed (14)C in the seedlings followed the order treated leaf (TL) > leaves above the treated leaf (LATL) > leaves below the treated leaf (LBTL) > roots and stalks, while in the mature oilseed rape, the order followed was TL > LATL > LBTL and stems > seed capsules, seed, and roots > branches. Only the parent compound ZJ0273 was found in the extractable residue of the oil rape seeds with a concentration of 0.09 mg per kg dry weight. The residue level in oil seeds suggested a low dietary exposure for humans if recommended application rates were followed.
Institute of Nuclear-Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agriculture and Zhejiang Province, Zhejiang University, Hangzhou, Zhejiang 310029, China.
Ailiang
A
Han
Qingfu
Q
Ye
Haiyan
H
Wang
Wei
W
Wang
Long
L
Lu
D000042:Absorption; D001565:Benzoates / Q000032:analysis* / Q000378:metabolism*; D029688:Brassica napus / Q000378:metabolism*; D002250:Carbon Radioisotopes; D005229:Fatty Acids, Monounsaturated; D005506:Food Contamination / Q000032:analysis; D006540:Herbicides / Q000032:analysis / Q000378:metabolism; D010573:Pesticide Residues / Q000032:analysis*; D018515:Plant Leaves / Q000378:metabolism; D010938:Plant Oils / Q000737:chemistry; D000074262:Rapeseed Oil; D012639:Seeds / Q000737:chemistry*
D001565:Benzoates; D002250:Carbon Radioisotopes; D005229:Fatty Acids, Monounsaturated; D006540:Herbicides; D010573:Pesticide Residues; D010938:Plant Oils; D000074262:Rapeseed Oil; C543844:propyl 4-(2-(4,6-dimethoxypyrimidin-2-yloxy)benzylamino)benzoate