Correlation Between Yield And Agronomic Traits Of Wheat Varieties

With the growth of population,while the yield of the grain is slowly growing,people have to face the problem of grain yield. FAO predicted the product of wheat will decline 1.4% in the global this year. Solve the problem about grain yield is still a great change,and it is also a key field to the breeders. The agronomic traits of 20 wheat cultivars were measured,and the data were obtained analyzed by SPSS and DPS software and illustrates the relationship between agronomic traits and production. choosing the advantage of the wheat agronomic traits is to obtain quality variety. The conclusion includes the following:1.Through comparision and investigation of agronomic characters and yield of wheat lines,Some traits of high yield wheat lines were selected, and the comment about traits of wheat lines and wheat strains was made. According to variance comparison test of wheat yield, we have a conclusion about yield comparison experiment that the significant differences of varieties yield,and the environment conditions are almost uniform. Compare to the control group,The yield of 2011-Z-1 and HB10-33 are obvious differences. Especially,there is a very significant difference between 2011-Z-1 and the control one.2.The analysis of agronomic traits found that the variation coefficient following the order from big to the small is the number of spring stem、KNPS、1000GW、PH、BS. We can choose the excellent varieties according to the coefficient of variation.3.According to the simple correlation among agronomic traits and yield of wheat material during the same year,we found that the number of spring stems and BS were significantly correlated with the plant height,we also found that the number of spring stems and plant height and 1000 grain weight were significantly correlated with KNPS, and ENPU was significantly negative correlation.4.By controlling the variables and for different years wheat lines for yield and yield components of partial correlation analysis and establish multiple linear regression equation was found, was extremely significant negative correlation, yield and yield components is a linear relationship between grain number per spike and 1000 grain weight. Principal component analysis showed that the number of Mu spike as the main component of wheat yield5.Cluster analysis of different varieties of wheat, the wheat varieties according to different agronomic characteristics and yield divided the two categories and six small class. The high stem agronomic traits of 2011-Z-1 represents the high yield variety of the comprehensive agronomic traits.At the same time, the agronomic characters of 2011-W-17 were generally low, it can also be seen in the cluster table that the effect of plant height on the yield of 64cm-81 cm is not obvious, the yield components and the number of stem directly affect the yield of the variety...