Variation in seed germination of Dysoxylum binectariferum: An endangered medicinal tree species, from different Indian seed sources

Dysoxylum binectariferum is an endangered medicinal tree species of India that needs urgent conservation attention. In the present study, fruits and seeds from seven different sources covering four states namely, Arunachal Pradesh, Assam, Maharashtra, and Karnataka were collected to study the variation in germination attributes.Asignificant variation was observed for all germination traits viz. germination per cent, germination rate, speed of germination, mean daily germination, peak value of germination, and germination value. Seed germination varied significantly (28.89-98.33%) among seven seed sources. Seeds collected from the Jog (Karnataka) location were superior in all germination attributes. Seed germination traits with altitude showed a significant positive relationship and a significant negative relationship with latitude and longitude. The information generated in the study shows that there is potential scope for further tree improvement and conservation aspects of Dysoxylum binectariferum across India.