关键词: 引进水稻品种, 品质性状, RVA值, 相关分析, 主成分分析, 聚类分析

Abstract: Correlation principal component and cluster analyses were performed to test sixteen grain quality traits (including rapid viscosity analyzer value) of nineteen rice cultivars introduced from abroad.The results were as follows: viscosity had a significant negative correlation to brown rice and head milled rice rate,while setback and consistence had a very significant positive correlation to the rate of amylase content.The cumulative contribution rate of grain shape,cooking and eating quality to grain quality was 62.159% percent.Nineteen cultivars could be classified into three groups which had respective excellent quality traits.

Key words: rice cultivars introduced from abroad, grain quality, rapid viscosity analyzer value, correlation analysis, principal component analysis, cluster analysis