柑桔嫁接树是由芽发育而成,芽又是树体生长、开花结果的基础。但是柑桔芽太小,其茎端生长点则更小,不易观察。关于柑桔花芽分化已有很多研究,但是迄今为止我们看到的柑桔花芽分化图,几乎都是切片图,难于认识其全貌。为此,我们对锦橙芽进行了扫描电镜观察。 材料与方法 以重庆本所试验场枳砧锦橙小年树、大年树为试材。从小年树上取春梢营养枝和早秋梢的芽作花芽分化的观察,从大年树上取春梢营养枝的芽作营养芽 Grafted citrus trees are developed from buds, buds and trees are the basis for the growth and flowering results. But the citrus bud is too small, the growth point of its stem is smaller, not easy to observe. There have been many studies on citrus flower bud differentiation, but so far we see citrus flower bud differentiation map, almost all slice images, it is difficult to understand the whole picture. For this reason, we conducted a scanning electron microscopic observation of the orange buds. MATERIALS AND METHODS The test was conducted on the small tree and daddy tree of Poncirus trifoliatum in Chongqing Experimental Park. From the young tree to take spring shoots and branches of early autumn bud shoots bud differentiation for observation, from the tree to take spring shoots shoots nutrition buds