Anthracnose Kernel Rot of Maize Caused by Colletotrichum graminicola (Ces.) Wils.: Mode of Entrance into and Disease Progression in Ears

Authors

Claude Nankam, Iowa State University
D. C. Foley, Iowa State UniversityFollow

Document Type

Research

Keywords

Anthracnose, Co/letotrichum graminicola, ear rot, kernel rot, maize, seed quality

Abstract

The mode of establishment of Colletotrichum graminicola in maize ears to cause kernel infection was studied for two types of infective propagules and three sites of penetration. Shank inoculations with either oat-grain inoculum or spores induced a greater percentage of infected kernels than inoculations of the husk or kernel area with an infected oat grain or inoculations of the silks with an oat grain or a spore suspension in 1985. But in 1986, a spore suspension in the kernels ranked first among all the treatments based on the basis of disease severity on the kernels. However, a large percentage of kernel infection, in general, came from shank infections, the pathogen progressing from the vascular tissue of the cobs into the kernels. The date of inoculation did not significantly affect disease development. Infection in the maize ear was more severe than indicated by symptoms.

Publication Date

September 1988

Journal Title

Journal of the Iowa Academy of Science

Volume

95

Issue

3

First Page

79

Last Page

91

Copyright

© Copyright 1988 by the Iowa Academy of Science, Inc.

Language

EN

File Format

application/pdf

Recommended Citation

Nankam, Claude and Foley, D. C. (1988) "Anthracnose Kernel Rot of Maize Caused by Colletotrichum graminicola (Ces.) Wils.: Mode of Entrance into and Disease Progression in Ears," Journal of the Iowa Academy of Science: JIAS, 95(3), 79-91.
Available at: https://scholarworks.uni.edu/jias/vol95/iss3/4