Benzaldehyde O-alkyloximes as new plant growth regulators
1998
Yoshikawa, H. (Kyushu Kyoritsu Univ., Kitakyushu, Fukuoka (Japan)) | Doi, K.
Forty-two kinds of benzaldehyde O-alkyloximes derived from benzaldehydes were prepared and their biological activities were investigated. Introduction of a fluorine or bromine atom to the benzene ring of the oximes enhanced their phytotoxic activity. The O-alkyloximes with a fluorine atom at the 3 or 4 position of the benzene ring were more active than the other oximes in the GA3-induced alpha-amylase induction inhibition test. In the transpiration test, 4-bromobenzaldehyde O-carboxylmethyloxime was the most active. The O-alkyloximes exhibited weak abscisic acid-like activity by inhibiting o\not only the germination, root growth and transpiration of higher plants but also GA3-induced alpha-amylase induction in embryoless barley seeds
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