completed his MSc in Genetics in First Class with a fellowship and PhD in Genetics with CSIR Fellowship from Haryana Agriculture University. He did Post-Doctorate, CSIR and then joined G.B Pant University of Agriculture and Technology, Patnagar as an assistant in 1980. He was selected as Senior Research Officer in 1998 and then become professor in the Departement of Genetics and Plant Breeding in 1998. Dr Khanna has 39 years of experience of teaching and conducting research on wide-hybridization, Genetics and Biotechnology. He was In charge of Crytogenetics and Molecular Marker Laboratory and Seed Testing  Laboratory. He was Joint Director Research of the university. Dr Khanna is the recipient of ';Best Teacher Award'of the college of Agriculture. He also received ';Vijay Rattan Award' in 2005,' Bharat Vikas Award and Rajiv Gandhi Excellence Award ';in 2006 and ';Gem of India' award in 2007 from various societies and institutions. He has also received two Best Paper Awards. He retired as Professor, Biotechnology and Chairman, School of Crop Improvement and In Charge Dean at College of Post Graduate Studies, Central Agricultural University, Barapani, Meghalaya.