Fig. 3
Heterodera glycines hatching is increased by the presence of soybean root exudate or ZnCl2. Asynchronous eggs were examined for hatching each day for 15 days in sterile distilled water, soybean root exudate, and ZnCl2. The experiment was repeated once with three replications; each replication consists of 1000 eggs. Different letters at the end of the curves indicate statistically significant differences (α = 0.05)