Abstract:
In order to screen special soybean varieties with high protein and high fat, the protein and fat contents of 240 soybean germplasm resources collected were determined, and the content, clustering and correlation analysis were carried out. The results showed that the protein content of 240 soybean germplasm resources ranged from 36.2% to 48%, with an average content of 42.01% and a coefficient of variation of 4.87%. The fat content ranged from 16.7% to 24.2%, the average content was 19.87%, and the coefficient of variation was 5.90%. After screening, 39 high-protein materials with more than 44% protein content and 11 high-oil materials with more than 22% fat content were obtained. The 240 germplasm resources could be divided into three categories by cluster analysis, of which 68.8% were intermediate type, 21.3% were high protein and low fat type, and 10% were high fat and low protein type. Protein and fat content were negatively correlated, the correlation coefficient was-0.624, and the correlation equation was y=-0.357 6 x+34.886, R~2=0.389 6. There was a positive correlation between protein and total egg fat, and the correlation coefficient was 0.821. The correlation equation was y=0.642 4 x+34.886,R~2=0.673 2. The correlation coefficient of total fat and egg fat was-0.066.