| abstract |
The invention relates to the use of a compound of the formula I or its salt, wherein R₁ is a (halogenated) aliphatic or cycloaliphatic radical; R₂ = H, alkyl, alkenyl or alkoxy; R₃, R₄ each H, (subst.) Alkyl, (subst.) Alkoxy, NO₂, CN, (subst.) Amino, (subst.) Alkenyl or alkynyl; X = O or S and Y = CH or N mean as gametocide. Hybrid seeds can therefore be produced in a simple manner with the aid of the compounds of the formula I or their salts. |