University of Illinois at Urbana-Champaign
Epidemiology of Phomopsis Seed Decay of Soybeans: Infection Progress and the Effects of Weather and Host Resistance
Abstract
dc:descriptionPhomopsis seed decay of soybeans (Glycine max L.), caused by the fungi Diaporthe phaseolorum (Cke. & Ell.) Sacc. var. sojae Wehm. and an unidentified Phomopsis sp., reduces the germination, vigor, and quality of seeds grown in seasons with warm, wet weather near harvest. The establishment of Phomopsis sp. in six soybean cultivars was measured in natural field epidemics in east-central Illinois in 1980 and 1981. Infection incidences in surface disinfested plant parts were estimated by recovery of the pathogen on potato-dextrose agar. Infection progress curves for the period between emergence and harvest were analyzed using the Weibull cumulative distribution function, and were related to weather using multiple linear regression.
Degree
thesis:*- Name thesis:degree_name
- Ph.D.
- Level thesis:degree_level
- Dissertation
- Discipline thesis:degree_discipline
- Plant Pathology
- Grantor
- University of Illinois at Urbana-Champaign
- Year dc:date
- 2014
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Shortt, Barry James
Subjects
dc:subject × 1Identifiers
dc:identifier.*- Identifier
- (UMI)AAI8218564
- OAI identifier oai:identifier
- oai:www.ideals.illinois.edu:2142/70583