Germination analysis of pterocarpus rohrii vahlunder different

Brazilian’s native forestry species usually present a slow development. The demand for commercial production of seedlings from those species is rising due to its use on afforestation programs. Making necessary the development of techniques that reduce the time required to seedling production. Pterocarpus rohrii is an important Brazilian native species with some potential economic uses, but with rare publications about its technologic or biological characterization. Thereby, this study aimed to evaluate germination pattern associated with different sowing techniques of Pterocarpus rohrii.One thousand and eight hundred fruits from each population evenly distributed between two replicas of each treatment. Control treatment consisted of direct fruit sowing, while in the second treatment all fruits had their wings removed with scissors. Synchronization indexes were not significantly different between treatments or seed origin. Removal of the seed wing did not affect the time associated with the germination process but provided better germination rates. Germination pattern and responses between treatments and germination rates are dependent on population characteristics. Being responsible for a great variation on time required to germination of a seed lot. Besides that, wind removal seems to be an important procedure, since it promotes higher germination rates. Propitiating a better exploitation of a seed lot.