为加强滇型优质杂交粳稻的选育，利用快速黏度分析仪，对云南农业大学稻作研究所保存的159份滇型杂交粳稻保持系稻米RVA谱特征值进行了主成分分析和聚类分析，并与云南优质软米云恢290的RVA特征值进行比较和判别。主成分分析表明，与稻米口感品质有关的8个RVA指标可归为软硬、胶稠、回生这3个主成分因子，这3个主成分累计贡献率达89.64%；聚类分析结果显示，供试的保持系材料可分为2大类型，Ⅰ类包括了147份（占比92.45%），又可分为3个亚类；贝叶斯判别分析显示，Ⅰ-1和Ⅰ-3亚类稻米的RVA特征值与云恢290相符性最高。

In order to strengthen breeding of high quality hybrid japonica rice of Dian-type, rice grains of 159 maintainers of japonica Dian-type hybrid rice were analyzed with Rapid Visco Analyser （RVA）, and the RVA characteristic values were analyzed with principal component, and the 159 samples were clustered, then the samples clusters were compared with Yunhui 290 through Bayes discrimination. The results indicated that 8 RVA characteristic values were composed of 3 principal components, soft and hard, gel, retrogradation, which occupied 89.64% contribution of the 8 RVA characteristic values. All the 159 samples were clustered into 2 groups. GroupⅠcovered 92.45% maintainers, which could be divided into 3 subgroups. Average values of RVA characteristic data of subgroup I-1 and I-3, which covered 136 （85.53%） samples were high similar with those of Yunhui 290 on Bayes discriminant functions.