一.前言研究小麦各层叶片对茎节以及穗器官发育的影响,在理论上和实践上都有一定的意义。从理论上来讲,植物任何器官的建成都需要光合产物作为物质基础,而作为光合作用的主要器官——叶片,总是不断地、逐层地循序形成,这些不同层次的叶片,由于阶段 I. Preface It is of great significance both in theory and in practice to study the effects of different layers of wheat leaves on the development of stem nodes and spike organs. In theory, the formation of any organ of plants requires photosynthetic products as the material basis, and as the main organ of photosynthesis - leaves, are always continuously, layer by layer, the formation of these different levels of leaves, due to the stage