. Kalita has presented a scientific paper “Effects on vitrification solutions, exposure time, preculture, volume of vitrification solution on vitrification-based cryopreservation of khasi pine (Pinus kesiya Royle ex. Gord.) shoot apices” in National Symposium on Aassessment and Conservation of Plant Genetic Resources under changing Environment, on 8th Sept. 2010 in the North Eastern Hill University, Shillong.