K.R. Shivanna, formerly Professor and Head, Department of Botany, University of Delhi is now associated with Ashoka Trust for Research in Ecology and the Environment, Bangalore as INSA Honorary Scientist and Honorary Senior Fellow. He has been doing research on reproductive biology of flowering plants for over 50 years. He has published over 150 original research papers in refereed journals and authored/edited five books on pollen biology and biotechnology. He has worked at the Royal Botanic Gardens, Kew, UK, Welsh Plant Breeding Station, Wales, UK, University of Melbourne, Australia, University of Siena, Italy and University of Saskatchewan, Saskatoon, Canada as a Visiting Scientist/Professor. He is a recipient of many awards including Panchanan Maheshwari Medal, and a Fellow of the Indian National Science Academy, Indian Academy of Sciences, National Academy of Agricultural Sciences and National Academy of Sciences, India. Rajesh Tandon is currently working as Associate Professor at Department of Botany in University of Delhi. He did his Ph.D. in 1998 from the University of Delhi. Since then he has been teaching and conducting research at the Department of Botany, University of Delhi, and his research interests have been plant reproduction, developmental biology and conservation biology. He has published over 30 research papers in reputed international journals and contributed chapters to several books. He is a recipient of Dr Y.S. Murthy Young Scientist Award by the Indian Botanical Society.