Abstract:In order to clarify the relationship between the main agronomic traits and yield of winter wheat germplasm resources, and to better select high-quality parents, 48 wheat germplasm resources were selected as the research object, and 11 main agronomic characters were analyzed by variance analysis, correlation analysis and cluster analysis.The results show that from the perspective of the coefficient of variation of the growth period, the intermediate growth stage of the 48 varieties > reproductive growth period > vegetative growth period. Through simple correlation analysis and partial correlation analysis, the number of effective tillers, the number of grains per panicle, and the 1,000-grain weight have reached a very significant positive correlation with the yield, indicating that on the basis of ensuring a certain number of panicles, the high yield can be achieved by increasing the number of grains per panicle and the 1,000-grain weight. Through cluster analysis, the tested materials were divided into 4 categories,and 1 super high-yield variety(Jinmai 62) and 11 high-yield varieties were selected. These two types of wheat varieties can be used as ideal high-yield parents.