| abstract |
A method of sterilizing the male anthers of a plant, which comprises applying to the plant a pyrrolidine derivative which is a compound of the general formula I or a salt and or an ester, N-alkylamide, N,N-dialkylamide, the amide or hydrazide thereof:n in which A represents-NH-CH-CO 2 H or-N =C-CO 2 H, and each of R' and R, which may be the same or different, represents, a halogen atom, a hydroxy group or an alkyl or alkoxy group having from 1 to 6 carbon atoms and optionally substituted by one or more of the same or different halogen atoms, or R' and R 2 together represent an epoxy group, a group of the formula -O-CH 2 -O-, or a di- or tn-methylene group. |