A method for preparing azetidine derivatives, male sterility in plants producing compositions containing them, their use in sterilizing male parts in plants, a method of producing F1 hybrid seed and certain novel azetidine derivatives

摘要

A method of sterilising the male anthers of a plant, which comprises applying to the plant an azetidine derivative which is an acid of the general formula I or a salt and/or an ester, amide, alkylamide, hydrazide or alkylhydrazide thereof:in which:X represents one of the groups CH₂, CHR or CR₂;Y represents one of the groups CHR, CR₂ or CH·CO₂H;Z represents one of the groups CH₂, CHR, CR₂ or CH·CO₂H;the or each R independently represents an alkyl, alkenyl or cycloalkyl group or an aryl or aralkyl group optionally substituted on the aryl nucleus by one or more of the same or different substituents selected from halogen atoms, alkyl groups and alkoxy groups; and one but only one of Y and Z must represent a CH·CO₂H group.