Department of Applied Sciences and Humanities, THDC Institute of Hydropower Engineering and Technology, Bhagirthipuram, Tehri Garhwal- 249001, Uttarakhand, India

Present investigation covers monitoring on seed germination (under the influence of different growth regulators) on two important tree species of the region, viz- Litsea elongata, and Litsea monopetala. This analysis was considered necessary since the beneficial effect of pre-soaking treatment of seeds with growth regulators and other substances have been reported in the literature repeatedly. It is now generally agreed that such a treatment leads to an increase in tissue hydration, respiratory activity, redistribution of nutrient reserves, and enhancement of the seedling growth, thus it is bound to help us in knowing the causes of the dormancy of seeds in forest tree species on the one hand and seems to be the potential approach to keep pace with new concepts and developments to meet the increasing demands of the country especially through the release of new seedling and the samplings growth in the green houses and laboratory conditions on the other. The critical survey of the literature reveals that the quality of the seeds of forest species in terms of their variability, germination and overall capacity for raising healthy seedlings would play a very important role like those of the agricultural crops, it is a general realization, however, that research with respect to the morphological aspects, of seeds the influence of different growth regulators on germination of these taxa has been carried out in a limited and sporadic manner only. As such and particularly in view of the changed emphasis on forest ecosystem, it is earnestly felt that this work should help us to draw right conclusion leading to proper orientation of the forestation programme in future.

Keywords: Growth regulators; Litsea elongata; Litsea monopetala; Seed germination; Tissue hydration