甜叶菊中含有糖苷,是一种天然甜味剂,其甜度是蔗糖的300倍。我国于1976年从日本引进的甜叶菊,是一个变异幅度很大的野生混合群体,在形态特征、生物学特性,特别是糖苷含量等方面,个体间存在很明显的差异,直接以种子繁殖,容易发生遗传性的偏倚和退化。加之引种时间短,目前尚未系统地开展良种提纯复壮和育种工作。在这种情况下,运用组织培养技术繁殖高糖苷含量的甜叶菊,既有繁殖系数高的优点,又能保持良种特性,同时还可获得新的突变体, Stevia contains glycosides, is a natural sweetener, the sweetness of sucrose is 300 times. Stevia, introduced from Japan in 1976 in China, is a wild mixed population with a great variation. There are obvious differences in the morphological characteristics, biological characteristics, especially the content of glycosides among the individuals. Direct breeding in the seed, Hereditary biases and degenerations are prone to occur. Coupled with the introduction of a short time, has not yet systematically carried out breeding and rejuvenation breeding and breeding. Under such circumstances, the use of tissue culture technology propagation of high-glycoside content of Stevia, both the advantages of high reproductive coefficient, but also to maintain the characteristics of varieties, but also access to new mutants,