用X射线荧光(XRF)和X射线衍射(PXRD)技术对第4代太空组和地面组白术中元素种类、含量及主要化学组分的微结构进行测定并作对比分析.结果表明,太空组比地面组白术少了Na和Ti两种元素,K和Mn的含量分别提高到1.16和1.15倍,其他元素含量有不同程度的下降,尤其是Si和P,分别下降了82.1％和71.2％；在地面组白术中鉴别出含有一水草酸钙和菊糖,而太空组白术中不含菊糖,一水草酸钙的含量比地面组明显减小.航天育种有利于选育出变异幅度大的特异质白术新品种.这两种技术配合使用适宜对变异幅度大的航天育种药用植物的元素和主要组分微结构的分析.%The contents of various elements in the fourth generation atractylodes macrocephala koidz cultivated by spaceflight breeding were analyzed and compared with those of the ground group on the whole jointly by XRF and PXRD. The results showed that the element Na and Ti could not be detected in the space group, and the levels of K and Mn were enhanced by 1. 16 and 1. 15 times as these elements were measured in ground group, but other elements' contents declined to different degrees, and the most notable elements are Si and P, decreasing by 82. 1% and 71. 2% accordingly; there is some whewellite in the ground group, whereas much less is found in the space group, The ground group contains inulin, however none in the space group. Spaceflight breeding can harvest significantly mutated specific Chinese herbal medicines varieties. The combination of two testing techniques has a positive role in space breeding applied in cultivation of medicinal plants.
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