) of wheat CSDH lines.    Year-by-Drought Interaction   Estimation Based on the Phenotype   Estimation Based on the Genotypic Observations                            ----------------------------- ----------------------------------- ------------------------------------------------ ---- ------- -------- -------   0000 C                        0.000                               −0.0                                             00   0.000   −0.000   00.00   0000 MD                       0.000                               0.000                                            00   0.000   0.000    00.00   0000 C                        0.000                               −0.000                                           00   0.000   0.000    00.00   0000 SD                       0.000                               −0.000                                           00   0.000   −0.000   00.00   0000 C                        0.000                               0.000                                            00   0.000   0.000    00.00   0000 SD                       0.000                               −0.000                                           00   0.000   −0.000   00.00   0000 C                        0.000                               0.000                                            00   0.000   0.000    00.00   0000 SD                       0.000                               0.000                                            00   0.000   0.00     00.00  *a*---additive effect, *aa*---additive-by-additive (epistatic) interaction effect, R^0^---coefficient of determination (the proportion of the variance in the