陕西省农家小麦品种主要加工品质特性及其聚类分析

研究了测定了陕西省１３１个主要农家小麦品种的粗蛋白含量，籽粒硬度和全麦粉ＳＤＳ－沉淀值，并根据这３个品质性状，利用离差平方和法对供试品种进行了总聚类和分区聚类分析。总聚类分析中，供试品种被聚为４类。

Quality Traits and Cluster Analysis of Rural Home Varieties of Shaanxi Province

Grain hardness, protein contents and sedimentation values of 131 rural home varieties of Shaanxi were studied.Cluster analysis was conducted with sum of squares method based on these three quality traits.All varieties cluster analysis divided the varieties into four clusters.Protein content and sedimentation values of the first cluster are high, but its hardness is the lowest.Protein content and sedimentation value of the second cluster are the lowest, but its hardness is high.The quality traits of the third cluster is somewhat balanced and good among the four clusters.District varieties cluster analysis divided the varieties of the North of Shaanxi, the South of Shaanxi and the Middle of Shaanxi into two, two and three clusters respectively.The quality traits of the first cluster of varieties in the Middle of Shaanxi are similar with the first cluster of the varieties in the South of Shaanxi.The third cluster of the varieties in the Middle of Shaanxi has the similar quality traits with the second cluster of the varieties in the North and the South of Shaanxi.