红外光谱指纹区（1300~400cm-1，7.69~ 25微米）吸收峰的特征性强，可用于区别不同化合物结构上的微小差异。犹如人的指纹，故称为指纹区。指纹区的红外吸收光谱很复杂，能反映分子结构的细微变化。这个区域的振动类型复杂而且重叠，特征性差，但对分子结构的变化高度敏感，只要分子结构上有微小的变化，都会引起这部分光谱的明显改变。
通过对甘薯蔓多糖红外光谱指纹区的特征吸收解析表明：甘薯蔓多糖含有羧基，是一种中偏酸性多糖；
According to the analysis of IR fingerprint characteristics absorption, the result showed that the PSPV was an acidic polysaccharide containing a carboxyl.
方法采用PCR指纹法、基因内间隔区（IGS）和磷脂酶基因（PLB1）测序分析鉴定基因型。
Methods Genotype was characterized by PCR fingerprinting, intergenic spacer (IGS) sequencing, and phospholipase (PLB1) gene sequencing.
目前，DNA指纹技术已在玉米品种区试审定、品种权测试、品种权执法等方面发挥了重要的作用，具有良好的应用前景。
At present, DNA fingerprinting has played an important role in regional trials, variety testing and enforcement, which has a bright future for application.
应用推荐