Effects of temperature and light on chinese tallow (sapium sebiferum) and texas sugarberry (celtis laevigata) seed germination

摘要

Experiments were performed to assess germination requirements of seeds of Chinese tallow (Sapium sebiferum (L.) Roxb.) and Texas sugarberry (Celtis laevigata Willd.). Sapium and Celtis seeds were exposed to different combinations of light and tem- Perature. It was predicted that Sapium would germinate under a variety of environmental Conditions, but Sapium seeds germinated predominantly in fluctuating temperature conditions. Celtis seeds also germinated readily in such conditions but had less restrictive germination Requirements.