Stability analysis of grain yield in pearl millet using standard variety mean as environmental index

Stability analysis for 12 varieties and one hybrid of pearl millet was performed using mean values of all varieties and mean values of standard variety WC-C-75 across environments as estimates of environmental values. With the standard variety regression analysis the estimates of bi were smaller with higher standard errors and remainder mean squares, and lower r²i values than the estimates of usual regression analysis. The standard variety regression proved less precise than the usual regression analysis.