The effect of treatment on seed germination in seedling production plans on reforestation with Tilia begonifolia

Basswood is a fast growth, high value and multi purpose species in northern forests of Iran, that it s using in forest plantation is very current in Iran. The purpose of this study was to determine the effect of some scarification and light treatment on seed germination. Seeds of linden exhibit double dormancy and thus require both scarification and stratification (moist-prechilling) because of their impermeable seed coat and dormant embryo, respectively. The effectiveness nine pre treatments include of sulfuric acid (H2SO4), hydrogen peroxide (H2O2), hot water, nitric acid and two light treatments (light and shadow) on Tilia seeds was investigated. In treatment the seeds were immersed in sulphuric acid with concentration of 30% and 15% in order to 10 and 20 min and hydrogen peroxide 1% for 40 and 20 minute and nitric acid 30% and 15% in order to 10 and 20 minute and control. After each treatment seed were exposure in River Sand for stratification. Results showed that best germination rate was belong to hydrogen peroxide 1% for 20 min and resulted in significantly percent germination than all other treatments. The seed that were cultured in shade showed higher vigor growth.