Abstract:
In order to screen the germplasm resources of winter wheat with excellent comprehensive traits and explore the genetic analysis of their main agronomic traits, 17 winter wheat germplasm resources were used as materials to identify the effects of their growth period, plant height, spike length, spikelet number per spike, infertility spikelet number, grain number per spike, thousand grain weight and harvested spike number 8 personality traits on yield. The results showed that the number of harvested spike number, the spikelet number per spike and the grain number per spike had a large direct effect on the yield through correlation analysis, indicating that the number of harvested spike number, the spikelet number per spike and the grain number per spike could achieve high yield by increasing on a certain basis. The germplasm resources were divided into three taxa by cluster analysis, and three high-yield materials(Xindong No.33, Jindong wheat 040, and Jindong wheat 052) were screened, which could be used as ideal high-yield parents. In the principal component analysis, the cumulative tribute was selected. The top 3 principal components with a yield of 76.159% were used to evaluate 17 winter wheat resources. The phenotypic specificity of different winter wheat resources was revealed.