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《Journal of Jilin Agricultural University》 2004-06
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Correlation Analysis of Grain Quality and Yield of New Rice Varieties in Jilin Province

ZHANG Qiang, FU Xiu-lin, QUAN Dong-xing ( Rice Research Institute, Jilin Academy of Agricultural Sciences, Gongzhuling 136100, China)  
Some grain quality traits of 20 new rice varieties in the regional trial of Jilin province in 2002 were analyzed. According to Standard for Fine Quality Rice by Ministry of Agriculture, China (NY/T83-1988), no single variety reached the 2nd class of chalky rice rate. The correlation between grain yield and chalky rice rate was significantly positive at 1 % level, and that between grain yield and protein content was significantly negative at 5% level. The correlation between chalky rice rate and chalky area was significantly positive at 1 % level, and that between chalky rice rate, 1000-grain weight and grain yield was significantly positive. It suggested that in order to obtain desirable grain quality in japonica rice, it was necessary to reduce chalky rice rate, chalky area and head rice rate; and to properly reduce 1000-grain weight, the number of total grains per panicle and grains weight per panicle in japonica rice might be considered in good grain quality and high yield rice breeding.
【Fund】: 国家高科技研究发展项目(2003AA207040)
【CateGory Index】: S511
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