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《Journal of Anhui Agricultural Sciences》 2008-18
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Study on the Relationship between Yield Components and Quality Traits in Japonica Rice

LIU Shu-mei et al(College of Agronomy,Shenyang Agricultural University,Shenyang,Liaoning 110161)  
[Objective] The study aimed to prove up the relationship between yield components and quality traits in japonica rice.[Method] With 35 japonica rice varieties in middle late maturing japonica rice group in Liaoning regional test in 2006 as tested materials,the yield components,quality traits and the relationship among them were studied.[Result] The chalky grain rate,chalkiness and the head milled rice rate of tested varieties were less to reach the quality standard,so they were the important traits for improving the rice quality in Liaoning province.The brown rice rate and milled rice rate had significantly negative correlation with chalky grain rate(r=-0.404*,-0.550**),and the ripened grain rate had extremely significantly negative correlation with the chalky grain rate (r=-0.467**),showing that increasing ripened grain rate was helpful to decrease the chalkiness and improve the milling quality.The spikelets per panicle had extremely significantly negative correlation with the brown rice rate(r=-0.505**),and its negative correlation with the milled rice rate reached the significant level(r=-0.412*).But the spikelets per panicle were affected directly by the number of panicles per unit area.The yield and its components had no significant correlation with the rice taste value.[Conclusion] Suitably increasing the spikelets per panicle and increasing the ripened grain rate and 1000-grain weight can harmonize the contradiction between the yield and quality in japonica rice.
【Fund】: 农业部结构调整项目(05-01-02A);; 辽宁省科技攻关项目
【CateGory Index】: S511.22
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