Inheritance of resistance to gray leaf spot of corn

Twenty-four corn inbreds, selected for resistance to gray leaf spot (caused by Cercospora zeae-maydis) in 1989 and 1990, were crossed with the susceptible inbreds FR1141 and/or FR20 and populations of four to six generations were produced. In 1991, the populations were evaluated for gray leaf spot severity at Urbana, Illinois and at Andrews, North Carolina. Using generation mean analysis, additive genetic effects were found significant for most populations and dominance effects were found significant for eight populations. Significant parameter estimates for dominance effects were negative indicating dominance for resistance. Five inbred lines 061, 198, B37HtN, DS:74:1071, and (OH43x#8brbr) were selected for further evaluation based on their level of resistance, results from the generation mean analysis, and maturities useful for breeding in Central Illinois.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Crop Sciences

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Coates, Stephen Thompson

Contributors dc:contributor

• White, Donald G.

• Agriculture, Agronomy
• Agriculture, Plant Pathology

Statement dc:rights

• Copyright 1996 Coates, Stephen Thompson

Language dc:language

eng

Identifier

9780591087475
AAI9702484
(UMI)AAI9702484

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/20416