不同类别冬小麦品种品质性状的研究

选用６９个不同来源及不同类型的冬小麦品种，就其１３个品质性状进行了研究。结果表明，河北省农家品种的面粉沉降值，湿面筋含量，面团吸水率，形成时间，稳定时间，断裂时间，带宽和评价值等性状均优于河北省育成品种，国内共它省份育成品种的沉降值，出粉率，白度，面团稳定时间，带宽分别优于河北省农家品种和育成品种，尤其是出粉率表现最为突出，这一些重要加工品质性状而论，如沉降值，形成时间，稳定时间和评价值等，国内育

Comparison Studies on Part of Quality Characters of Different Winter Wheats

In this paper, thirteen quality charaCters of 69 dst origin and type of winterwheat varieties were studied. The results indicated that landrace vforties of Hebei provincewere superior to the improved varieties of the province in flour botwh, wet gluten, wa-ter absorption, dough development time, stability, breakdown time, belt width and evaluaionvalue. The sedimentation, flour yield, whiteness, dough stability and belt width of the otherprovinces improved vdrieties were superior to both landraces and improved wheats of Hebei, es-Pecially in flour yield. As far as some important quality charaters (e. g. sedimentation valuedough development time, stability and evaluation value) were concerned, there was a greaterdifferene between China-bred varieties and the good accessions from the other countries-thelatter was always with good charaters. There were, however, some excellent varioties in theChina-bred wheats, such as Xiaoyan 6 and Beijing 7 being with the best performances in thecharacters above. Correlation analyses showed that there existed significantly positive relation-ship between sedimentation value and wet gluten, dough development time, stability, break-down time and evaluation value, and significantly negative the to mixing tolerance indexand degree of softening. But no significant relationships were found between sedimentation andthe other charaters.