Fig. 5.
The chemotactic response of Meloidogyne incognita J2 preexposed to different ethephon (Eth) concentrations. J2 were tested for their chemotactic response to Eth (50 µM) immediately after preexposure in Eth (50, 10, 1 µM or H2O) for 24 hr. Chemotaxis bioassays show attraction (positive index) or repulsion (negative index) values. Statistical analysis performed using one-way analysis of variance with Fisher’s LSD (P values: *P < 0.05; **P < 0.01; ***P < 0.001) tests comparing with a H2O negative control; error bars represent SE.