1979年Grove等从油菜花粉中分离出油菜素内酯并确定了其分子结构。油菜素内酯作为一种新的天然甾体生长调节剂而引起人们的注意。现在,一些作者已经在研究它在农业上应用的可能性。但是因为研究时间尚短,对油菜素内酯生理作用的了解仍是很不够的。本文就油菜素内醋对植物伸长生长的影响及它的作用机制进行了初步研究。材料与方法生长调节剂对植物伸长生长的影响: 选取饱满度较一致的扬麦1号小麦种子,以蒸馏水于25℃浸泡4小时,然后排在内装双层滤纸的 Grove et al. (1979) isolated brassinosteroids from rape pollen and determined their molecular structure. Brassinolide has attracted much attention as a new natural steroid regulator. Now, some authors are already studying the possibility of its application in agriculture. However, because the research time is short, the understanding of physiological effects of brassinolide is still not enough. In this paper, the effects of brassinolide on plant elongation and its mechanism were studied. MATERIALS AND METHODS Effects of growth regulators on plant elongation: Wheat plum seeds, Yangmai 1, with full plumpness, were selected for immersion in distilled water at 25 ° C for 4 hours and then placed in double layers of filter paper