Abstract “Jacaranda”(Jacaranda mimosifolia) and" mezquite”(Prosopis laevigata) are timber
species that generally present problems with regard to the germination of their seeds in
natural conditions, since they have a very hard and impermeable cover. Different treatments
have been applied to improve the germinative response of both species with unfavorable
results. This study aimed to know the effect of the pre-sowing laser biostimulation on
germination and seedlings growth of these species. The seeds were biostimulated with a He …