Figure 5From: Pyramiding, alternating or mixing: comparative performances of deployment strategies of nematode resistance genes to promote plant resistance efficiency and durabilityGall index (GI) on lettuces (mean of 40 to 45 replicates ± standard error) of the 3-years field experiment. GI checked at nine (M9), 22 (M22) and 33 (M33) months. DLL was the susceptible cultivar as control, DH149 is homozygous resistant Me3/Me3, DH330 is homozygous resistant Me1/Me1.Back to article page