关键词: 粳稻, 稻米品质, 变异系数, 主成分分析, 相关分析

Abstract: Variant coefficient, principal component and correlation analysis were performed to test quality characters of eighty-nine japonica rice varieties, which were introduced from Japan by the statistic analysis system of the SPSS. The results are:①The properties of chalkiness, head rice rate, gel consistency, Amylose content and protein content have bigger CV, so better rice can be selected by breeding or cultivation; ②Brown rice rate, milled rice rate, length/width, chalky rice rate, chalkiness, gelatinization temperature, gel consistency and protein content are considered as the principal properties for estimating rice quality, from the results of principal components analysis; ③Correlation of different characters is so complex, head rice rate is minus to chalkiness. Amylose content is positive proportional to grain length and length/width, protein content is minus to grain length and length/width.

Key words: japonica rice, rice quality, variant coefficient, principal component analysis, correlation analysis