2009－2015年河北省审定小麦品种的聚类及产量分析

摘要

In order to understand the current situation of wheat breeding in Hebei Province,4 agronomic characters (plant height,kernels per spike,1 000 -grain weight,bulk density)and 5 quality indexes (crude protein content,wet gluten content,sedimentation value,water absorption and dough stability time)of 52 wheat varieties which passed provincial certification during 2009 -2015 in Hebei Province were detected. Clustering analysis was also conducted.The results indicated that 52 wheat varieties were clustered into 4 groups.The group Ⅰ included 17 wheat varieties with the lowest bulk density,crude protein content,wet glu-ten content,sedimentation value,water absorption and dough stability time.The group Ⅱ contained 7 high quality and strong gluten wheat varieties with the longest dough stability time and the highest sedimentation value,crude protein and wet gluten content.The group Ⅲ included 16 wheat varieties with the highest bulk density and 1 000 -grain weight,the lowest plant height and other indexes in the medium level.The groupⅣ contained 12 wheat varieties with all indexes in the medium level.The clustering results were basically con-sistent with the pedigree.The average yield of wheat varieties authorized in Hebei Province showed an increas-ing trend in recent years.%为了解近年来河北省小麦育种现状，以2009－2015年河北省审定的52个小麦品种为材料，并用4个农艺性状（株高、穗粒数、千粒重和容重）和5个品质指标（粗蛋白、湿面筋、沉降值、吸水率和稳定时间）对其进行聚类分析。结果表明，52个小麦品种被聚为4大类，第Ⅰ类包括17个品种，其容重、粗蛋白、湿面筋、沉降值、吸水率和稳定时间最低；第Ⅱ类包括7个品种，这类品种突出特点是面团稳定时间长，沉降值、粗蛋白、湿面筋含量最高，属于优质强筋小麦品种；第Ⅲ类包括16个品种，其容重和千粒重最高，株高最低，其它指标属于中等水平；第Ⅳ类包括12个品种，这类品种的各项被测指标均属于中等水平。聚类结果与系谱关系基本一致，近年来河北省小麦审定品种平均产量呈增加趋势。