Morpholoical observation and the analysis of leaf cytokinin content and chlorophyll content showed that the chimeric gene was expressed in some transgrnic plants and the leaf senescence was delayed.

• 通过叶片细胞分裂素含量和叶绿素含量的测定以及形态观察,表明抑制衰老的嵌合基因在部分转基因水稻中表达，叶片衰老得到延迟。