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MOVEMENT AND FATE OF FLUORODIFEN‐1′‐ 14 C IN CUCUMBER SEEDLINGS
Author(s) -
EASTIN E. F.
Publication year - 1971
Publication title -
weed research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.693
H-Index - 74
eISSN - 1365-3180
pISSN - 0043-1737
DOI - 10.1111/j.1365-3180.1971.tb00977.x
Subject(s) - cucumis , chromosomal translocation , chemistry , cucurbitaceae , absorption (acoustics) , horticulture , botany , biology , biochemistry , physics , acoustics , gene
Summary. Autoradiographs and liquid scintillation counts of cucumber ( Cucumis sativus L. cv. Ashley) seedlings indicated rapid absorption and translocation of radioactivity from fluorodifen‐1′‐ 14 C ( p ‐nitrophenyl‐α,α,α‐trifluoro‐2‐nitro‐ p ‐tolyl ether labelled with 14 C in the 1 position of the p ‐nitrophenyl ring). After 24 h in 1 mg/1 of fluoro‐difen‐1′‐ 14 C, 25% of the absorbed radioactivity was translocated from the roots. Cucumber seedlings degraded fluorodifen‐1′‐ 14 C via a pathway similar to that reported for peanut seedlings but at a slower rate. The major degradation products were p ‐nitrophenol and an unidentified polar compound (Unknown I). More rapid absorption and translocation coupled with slower degradation by cucumber as compared with peanut seedlings are factors which may contribute to the susceptibility of cucumber to fluorodifen.