黑龙江省新审定水稻品种品质性状分析

通过2000—2004年黑龙江省审定的35个水稻品种品质性状分析,结果表明,所有供试材料品质总分没有达到部颁优质米一级标准,有74.29%达到部颁优质米二级标准。供试材料品质性状间垩白米率、垩白度、直链淀粉含量达到部颁优质米的一级标准;品质性状间存在显著或极显著的相关性;品质性状的主成分分析,糙米率因子、垩白度因子、直链淀粉含量因子、蛋白质含量因子、整精米率因子的特征根累计贡献率达82.5%。建立品质总分回归方程:Y=75.086 0.246x1-0.932x2-0.577x3-0.124x4 3.072x5。

Analysis on Grain Quality of New Rice in Heilongjiang Province

Some grain quality traits of 35 new rice varieties in Heilongjiang province in 2000-2004 were analyzed. Results showed that, according to standard for Fine Quality Rice, by Ministry of Agriculture, China(NY/T-593-2002), no varieties reached first class''s standard of quality score, and 74.29% rice varieties reached 2nd class''s standard of quality score; Chalky grain?chalkiness and amylose content reached first class''s standard of quality score among quality trait of varieties tested; Correlation coefficients among some quality trait of varieties were significantly positive at 5% and 1% levels; Cumulative percent of brow rice factor?chalky gain factor, amylose content factor, protein content factor and head rice factor reached 82.5% through principal component analysis of grain quality traits, and Regress equation of quality score which was Y=75.086 0.246 x1-0.932 x2 -0.577x3 -0.124 x4 3.072 x5 were established.