In our work, a strong cor-relation between sdecrease and proline content increase wasobserved at T2 ( s= −0.752 [proline] − 0.205; r2= 0. 87; P < 0.05)for all plant combinations and treatments; and at T1 for 5/culti-var, 8/cultivar, and ungrafted plants ( s= −0.087 [proline] − 0.540;r2= 0. 79; P < 0.05).