Calculate the genetic correlation between grain yield and harvest index in a set of 40 upland varieties tested in a 3-rep trial at IRRI in Wet season 2001

 

Step 1:  For each plot, add the value of HI and GY as in the table below.  Call the new variable HIGY

 

 

Step 2:  Do an ANOVA for HIGY

 

Step 3:  Estimate the genetic variance components for HI, GY, and HIGY;

 

Step 4:  Use the results of Step 3 and the right equation to estimate the genetic covariance.

 

Step 5.  Use the genetic covariance and variance components to estimate the genetic correlation.

 

 

 

 

Calculate variance components, covariance components, and rG