中文摘要：

在育种早期世代应用和面仪测定加工品质是提高品质改良效率的重要手段。以2002—2009年度种植于北京、济南、安阳和郑州的241份北方冬麦区主栽品种和高代品系为材料,采用逐步回归法建立了和面仪参数对粉质仪、拉伸仪和面包烘烤品质主要参数的预测模型。结果表明,可以用和面仪峰值带高、带宽和曲线面积、8min带高及尾带带高等参数有效预测粉质仪稳定时间、拉伸仪最大抗延阻力、拉伸面积和面包评分,解释其变异的61.0%～68.0%,其中和面仪参数对粉质仪稳定时间和拉伸仪拉伸面积的回归模型拟合度分别达0.83和0.95。可以用和面仪峰值带高、带宽和曲线面积、峰后带高和曲线面积、8min曲线面积等参数预测粉质仪吸水率和形成时间、拉伸仪延伸性和面包体积,解释其变异的46.0%～55.0%。和面仪峰值曲线面积可分别解释拉伸仪最大抗延阻力和拉伸面积变异的58.7%和59.7%。峰值曲线面积和峰值带高是和面仪的重要品质参数。

英文摘要：

Prediction of end-use quality using parameters from simple testing instruments as Mixograph is critical for efficient selection in breeding programs for wheat（Triticum aestivum L.） quality improvement.In this study,241 wheat cultivars and advanced lines were sown in Beijing,Jinan,Anyang,and Zhengzhou,China from 2002 to 2009 growing seasons.The Mixograph parameters of these cultivars were measured for determining their associations with Farinograph and Extensograph parameters,and bread-making quality traits.The multiple stepwise regression analysis revealed that Farinograph stability time,Extensograph maximum resistance and energy area,and bread score could be efficiently predicted by Mixograph midline peak value,peak width,peak integral,time×value,and tail value,which accounted for 61.0–68.0% of the phenotypic variation,with the fitting degrees of 0.83 and 0.95 for the model of Farinograph stability time and Extensograph energy area,respectively.Farinograph water absorption and development time,Extensograph extensibility,and loaf volume could be predicted by Mixograph midline peak value,peak width,peak integral,right value,right integral,and time x integral,accounting for 46.0-55.0% of the phenotypic variance.The Midline peak integral presented as the most important parameter for predicting Extensograph maximum resistance and energy area,and explained 58.7% and 59.7% of the variances,respectively.Midline peak integral and peak value were the two most important parameters when using Mixograph for quality testing.