Role of Phytohormones in sex differentiation in plants

The role of phytohormones in sex expression in plants is briefly surveyed. The interaction of hereditary and environmental factors in sex expression is considered. A major role of gibberellins and cytokinins in the regulation of sex expression in dioecious and monoecious flowering plants and in some muscoids is demonstrated. The evidence for the effect of other phytohormones and physiologically active compounds on sex expression in plants is examined.