Effects of dormancy breaking methods on germination of Cercis siliquastrum and Spartium junceum and seedling growth

Abstract Seed dormancy is a mechanism of long survival that ecologically important for seed propagation and dispersal the expansion plant populations. The impermeability coat in Fabaceae family due to layer sclerotic cells. Two experiments were conducted investigate effect different treatment on germination parameters seedling growth Cercis siliquastrum Spartium junceum. Experimental treatments comprised chemical thermal scarification consisting boiling water (2, 5, 10 min), H2SO4 (30, 60 min) GA (0, 500 1,000 mg L−1) C. 5 S. results presented here indicate by soaking sulfuric acid 30 min 2 junceum, respectively most efficient methods breaking dormancy. application these promoted highest values indices seedlings. In light found results, it revealed junceum seeds are affected dormancy, which can be removed chemical-thermal with water. data obtained contribute better comprehension establishment shrubs ornamental seedling.