If we consider the whole cereal plant as two parts , leaves and non - leaf organs , then it could be proposed that improvement of wheat yields can be obtained by improving the partitioning of assimilates of non - leaf organs ( frey - wyssling et al , 1959 ; sharma - natu et al , 1994 ) . although structure and function of leaves received considerable attention , those of non - leaf organs are poorly documented 本论文以小麦、水稻等几种重要经济作物为材料，应用透射电镜、扫描电镜、激光共聚焦显微镜以及氧电极，低温荧光等生理技术手段，对作物非叶器官的结构和主要生理特性进行了较全面和系统的研究。
