稻米蒸煮食味品质特性间的相关性研究

选用 2 2个品种 ,进行了随机区组的品种比较试验 ,并分析了供试品种的 11项蒸煮食味品质特性及味度值。结果表明 ,所测定的 11项蒸煮食味品质特性及味度值在供试品种间均存在着极显著的遗传差异 ;在蒸煮食味品质特性中 ,胶稠度、最高粘度、下降粘度值、粘滞峰消减值的品种间变异系数较大 ;糊化开始温度、最终粘度、回冷粘滞性恢复值、粘滞峰消减值与味度值呈显著或极显著的负相关 ,而最高粘度、下降粘度值与味度值呈极显著的正相关 ,直链淀粉和蛋白质含量与味度值呈负相关 ,而胶稠度与味度值呈正相关 ;在主成分分析中 ,被入选的 4个主成分的贡献率达 90 .5 8% ,其中第二主成分大的品种 ,糊化开始温度低 ,直链淀粉和蛋白质含量高 ,最终粘度和回冷粘滞性恢复值大

Study on the correlation of the cooking and eating quality properties of rice grain

varieties that breed in different ages and foreign good quality varieties were used to do varietal comparative trial of randomized blocks and to analysice 11 cooking and eating quality properties and taste value of used rice varieties.The results showed that the 11 measured cooking and eating quality properties and taste value have manium significance genetic difference;among the cooking and eating quality properties,varietal variation coefficent of gel consistency,peak viscosity,break down,setback is relatively large;every cooking quality property has a different correlation with eating quality property,initial pasting temperature,finial viscosity,consistency and setback have significant or maximum significant inverse correlation with taste value,while peak viscosity,break down has a postive correlation with taste value,amylose content and protein content are inversely related to taste value,but gel consistency are positively related to taste value another,the correlation among varietal cooking and eating quality properties is significant or maximum significant;in the analysis of principal components,the cumulative percent of 4 selected principal components reached 90 58%,initial pasting temperature of large second principal components is small,but amylose content and protein content is high,finial viscosity,consistency are large.