青桐〔Firmiana simplex(L.)W.F.Wight〕,又名梧桐,是我国著名的庭园绿化树种。因种子具有深休眠特性,用一般的方法处理发芽不整齐,往往延续二年出苗,给育苗工作造成困难。因此,研究该种子的休眠原因及萌发生理在理论和实践上都有一定意义。 一、材料和方法 本试验用本校院内母树所产新鲜饱满种 Qingtong [Firmiana simplex (L.) W.F.Wight], also known as Indus, is China’s famous garden afforestation species. Due to the deep dormancy characteristics of the seeds, germination irregularities are handled in the usual way, which usually lasts for two years and causes difficulties for breeding work. Therefore, to study the seeds of dormancy and germination of physiological reasons in theory and practice have some significance. First, materials and methods The test with fresh and full species of mother trees produced within the hospital