C assimilate distribution and accumulation at fore|anthesis in various organs of hybrid spring wheat 901 and its parent Shan 229 were studied by using 14 C tracer techniques.

• 研究结果表明：从花前标记到整个灌浆期，春小麦901 叶和鞘中14 C同化物分配率分别下降23?1 %25 和7?8%25 ，陕229 下降了32.；1%25 和7?7%25 。