Figure 4.

Detection of M. maydis in infected detached roots of different plant species: (A) The average length of infection threads (fungus filaments) within the root. Maize plant roots were from Prelude cv. Each column is an average of five replications. The error lines represent a standard error. Levels not connected by the same letter (A and B—3 days; a, b, and c—6 days) are significantly different (p < 0.05, ANOVA). (B) Photograph of representative detached roots after six days: The infection threads are seen as a dark stripe developing along the root from the culture disc.