Abstract: The invention relates to 6-substituted 9-halogenalkyl purine derivatives of the general formula I wherein R6 is selected from the group comprising —NH-furfuryl, —NH-(4-hydroxy-3-methylbut-2-en-1-yl), —NH-(3-methylbut-2-en-1-yl), —NH-(4-hydroxy-3-methylbutyl), —NH-(4-hydroxy-1,3-dimethylbut-2-en-1-yl), —NH-(4-hydroxy-1,3-dimethylbutyl), —NH-benzyl, —NH-phenyl, wherein benzyl, furfuryl and phenyl can be unsubstituted or optionally substituted with 1 to 3 substituents selected from the group comprising hydroxy, halogen, methyl and methoxy, and R9 is selected from the group comprising C1-C3 alkyl or C1-C3 alkenyl wherein each of the groups is substituted with one or more halogen atoms, for use in the regulation of growth and development of plant cells, organs and/or whole plants. The invention also relates to preparations containing these derivatives and to novel to 6-substituted 9-halogenalkyl purines.

Abstract: The invention relates to 6-substituted 9-halogenalkyl purine derivatives of the general formula I wherein R6 is selected from the group comprising —NH-furfuryl, —NH-(4-hydroxy-3-methylbut-2-en-1-yl), —NH-(3-methylbut-2-en-1-yl), —NH-(4-hydroxy-3-methylbutyl), —NH-(4-hydroxy-1,3-dimethylbut-2-en-1-yl), —NH-(4-hydroxy-1,3-dimethylbutyl), —NH-benzyl, —NH-phenyl, wherein benzyl, furfuryl and phenyl can be unsubstituted or optionally substituted with 1 to 3 substituents selected from the group comprising hydroxy, halogen, methyl and methoxy, and R9 is selected from the group comprising C1-C3 alkyl or C1-C3 alkenyl wherein each of the groups is substituted with one or more halogen atoms, for use in the regulation of growth and development of plant cells, organs and/or whole plants. The invention also relates to preparations containing these derivatives and to novel to 6-substituted 9-halogenalkyl purines.

Abstract: The invention relates to substituted 6-anilinopurine derivatives of the general formula I, wherein R denotes one to five substituents independently selected from the group consisting of hydrogen, halogen, hydroxyl, amino, alkyloxy and alkyl group, and R2 denotes amino, halogen, nitro, thio, alkylthio or alkyl group for use as inhibitors of cytokinin oxidase/dehydrogenase. The invention also relates to the compositions containing these derivatives.

Abstract: We disclose a DNA cassette and a method of increasing the productivity of cereal plants and/or the root mass of these plants.

Abstract: The invention relates to substituted 6-anilinopurine derivatives of the general formula I, wherein R denotes one to five substituents independently selected from the group consisting of hydrogen, halogen, hydroxyl, amino, alkyloxy and alkyl group, and R2 denotes amino, halogen, nitro, thio, alkylthio or alkyl group for use as inhibitors of cytokinin oxidase/dehydrogenase. The invention also relates to the compositions containing these derivatives.