辽宁稻米资源主要品质分析及综合评价

Main quality analysis and comprehensive evaluation of rice resources in Liaoning

中文关键词:  辽宁省  稻谷  品质调查  质量分析  评价

英文关键词:Liaoning Province  rice  quality investigation  quality analysis  evaluation

中文摘要:

      目的 系统评估不同产地辽宁稻米总体品质的差异性。方法 以125个不同稻谷品种为研究对象, 通过理化测试方法, 运用相关性分析法(correlation analysis, CA)、主成分分析法(principal component analysis, PCA)、聚类分析法(hierarchical cluster analysis, HCA)对不同产地辽宁稻谷品质进行质量分析和综合评价。结果 不同品种不同产地稻谷对品质指标的影响顺序为: 留胚粒率>垩白粒率>垩白度>精米率>出糙率>水分>灰分>蛋白>糙米质量>脂肪>长宽比>纤维; 利用逐步回归分析法得到回归方程: 出糙率=4.672×糙米质量–0.104×垩白粒率+0.141×垩白度–0.860×长宽比–13.205, 运用PCA共提取4个主成分, 累计方差贡献率为80.046%, 能有效解析所有品质信息特征。HCA结果与PCA结果一致, 125个稻谷品种被划分成3大类; 通过综合评估得出排名前3的品种分别为营口市大石桥市水源镇西青村的域稻17、盘锦市大洼县新立农场张家村的一目惚、盘锦市盘山县甜水乡公兴村的盐丰(47)。结论 本研究可以有效体现出不同产地辽宁稻谷品质质量间的差异性, 为稻谷种质选育、产品研发提供一定的理论依据。

英文摘要:

      Objective To systematically evaluate the differences in overall quality of rice from different regions in Liaoning Province. Methods Using 125 different rice varieties as research objects, the quality of rice from different regions in Liaoning Province was analyzed and comprehensively evaluated through physical and chemical testing methods, using correlation analysis (CA), principal component analysis (PCA), and hierarchical cluster analysis (HCA). Results The order of influence of different varieties and origins of rice on quality indicators was: Retention rate of germ grains>chalky grains rate>chalkiness>milled rice rate>brown rice rate>moisture> ash>protein>brown rice quality>fat>length-width ratio>fiber. Using stepwise regression analysis, the regression equation was obtained as follows: Brown rice rate=4.672×brown rice quality–0.104×chalky grains rate+0.141×chalkiness–0.860×length-width ratio–13.205. PCA extracted 4 principal components with a cumulative variance contribution rate of 80.046%, effectively elucidating all quality information characteristics. The results from HCA were consistent with those obtained from PCA, categorizing the 125 rice varieties into 3 major groups; through comprehensive assessment, the top 3 ranked varieties were identified as Yudao No.17 from Xiqing Village, Shiyuan Town, Dashiqiao City in Yingkou; Ichigo-hime from Zhangjia Village at Xinli Farm in Dawa County, Panjin; and Yanfeng No.47 from Gongxing Village in Tianshui Township, Panshan County, Panjin. Conclusion This study effectively highlights the differences in quality among various regional rices within Liaoning and provides a theoretical basis for breeding programs and product development related to rice germplasm.