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《Journal of Anhui Agricultural Sciences》 2003-03
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Effect of Climatic Factors on Rice Grain Quality

Yang Liansong et al (Rice Research Institute, AAAS, Hefei 230031)  
Based on the experiment in 8 sowing-date of hybrid Japoncia rice 80 you 121, the principal components of rice grain quality traits among different sowing-date was analyzed and also the relative important 5 climate factors upon the quality traits were analyzed by the partial correlation analysis. In the principal component of rice grain quality, first principal component was Transparency(TRP) factor which cigenvalue(λ 1) was 6.773. Cumulative percent was 75.260%; second was Chalkiness degree (CHD) factor which eigenvalue (λ 2) was 1.204. Cumulative was 13.377%; third was Amylose content(AC) factor which eigenvalue (λ 3) was 0.741. Cumulative was 8.229%. The mean daily air temperature was the most important factor considering its effect upon rice grain quality. The second was daily mean light hour, daily mean relative humidity, but daily mean rainfall and daily mean temperature different was less important to the variation of rice grain quality traits.
【Fund】: 农业部“优质中晚粳水稻新品种选育及无公害关键技术研究”项目(2 0 0 2 - 0 1 - 0 4A)
【CateGory Index】: S511.22
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