茶树越冬叶由于衰老,即使在摘梢以后,其光合作用仍呈现不可逆下降。Thomas 和 Stoddart 提出,叶片衰老过程受遗传控制,且有一定程序。不同茶树品种的暗诱导衰老速率不同,这已得确认。笔者研究 The overwintering leaves of tea trees, due to aging, show an irreversible decline in their photosynthesis even after picking. Thomas and Stoddart argue that the leaf senescence process is controlled genetically and has some procedures. The dark-induced senescence rates of different tea varieties are different and this has been confirmed. I study