利用花瓣培养与茎尖培养不同,要产生完整的植株需经过脱分化和再分化的过程。即由花瓣首先脱分化为愈伤组织,然后再由愈伤组织分化为胚状体或不定芽。因此,由花瓣培养得到的植株往往容易发生变异。市桥等(1975)和Earle等(1976)最早发现这个现象。菊花的花瓣培养也是这样。变异机会的多少依品种而不同。它的变异可以表现在植株、叶 The use of petal culture and shoot tip culture is different from the need to produce complete plant dedifferentiation and re-differentiation process. That is, first dedifferentiation of calli by the petals into callus, and then by the callus differentiation into embryoid bodies or adventitious buds. Therefore, plants grown from petals tend to mutate easily. Shiqiao et al. (1975) and Earle et al. (1976) first discovered this phenomenon. Chrysanthemum petal culture is also true. The number of mutation opportunities depends on the breed. Its variation can be expressed in plants, leaves