Analysis on correlation and principal component of major agronomic trait泽of peanut 蚤灶 calcium and phosphorus treatment

Through pot experiment, calcium and phosphorus were applied to the 10 main cultivated peanut varieties of Guangdong rovince, the correlation and principal component of 7 major agronomic characters of peanut were analyzed JMP 7.0. Correlation analysis showed that there was a significantly positive correlation between yield per plant and number of pods per plant under phosphorus fertilizer application; in the application of calcium condition, orrelations traits were more closely, correlations multiple pairs reached significant or extremely significant level. Principal component analysis showed thatthe first principal component was growth potential and the contribution rate was 43.56% under phosphorus fertilizer application; in the application of calcium conditions, as the first principal, yield factor accounted for 46.22% contribution rate. When breeding phosphorus efficiency varieties, we should focus on main stem height, branch length and branch number; when breeding calcium efficiency varieties, it is important to consider yield, weight per 100 pods and weight per 100 seeds.