Dr Maheshwari has made significant contribution in plant and cell physiology, particularly in the physiology and biochemistry of growth and differentiation in plants. His researches have led to isolation of cytokinins and gaining understanding of their role in flowering. Dr Maheshwari and his group have recently discovered the technique of raising haploid plants by anther culture. Development of haploids by anther and pollen culture technique makes possible the establishment of homozygous lines in plants and opens the area of biochemical genetics of higher plants.