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United States Department of Agriculture

Agricultural Research Service

Related Topics

Research Project: Genetic Analysis of Complex Traits in Maize

Location: Plant Science Research

Project Number: 6070-21220-015-00
Project Type: Appropriated

Start Date: May 09, 2013
End Date: May 08, 2018

Objective:
1. Develop novel maize genetic resources and analysis tools to enable high resolution dissection of complex agronomic traits. 1A. Create new genetic stocks to identify favorable alleles for yield improvement derived from exotic maize germplasm. 1B. Develop near-isogenic line (NIL) populations for the identification of disease resistance loci. 1C. Develop new strategies for the analysis of complex trait phenotypes. 2. Identify favorable alleles for disease resistance and agronomic traits in exotic maize germplasm. 2A. Geographic distribution of disease resistance alleles in maize. 2B. Enrichment of novel disease resistance alleles from exotic maize in adapted genetic backgrounds. 2C. Identifying new sources of resistance to Southern leaf blight (SLB), Fusarium ear rot, and fumonisin contamination from the GEM program and the NCSU tropical maize breeding program. 2D. Identify resistance loci from lines with elite levels of multiple disease resistance (MDR). 2E. Identification of disease resistance and yield genes from wild relatives. 3. Identify genes and mechanisms underlying quantitative disease resistance and defense response in maize.

Approach:
1. Create new genetic stocks to identify favorable alleles for yield improvement derived from exotic maize germplasm. Develop near-isogenic line (NIL) populations for the identification of disease resistance loci. Develop new strategies for the analysis of complex trait phenotypes. 2. Geographic distribution of disease resistance alleles in maize. Enrichment of novel disease resistance alleles from exotic maize in adapted genetic backgrounds. Identifying new sources of resistance to Southern leaf blight (SLB), Fusarium ear rot, and fumonisin contamination from the GEM program and the NCSU tropical maize breeding program. Identify resistance loci from lines with elite levels of multiple disease resistance (MDR). Identification of disease resistance and yield genes from wild relatives. 3. Select candidate genes and order at least 50 insertional mutant lines. Screen plants for desired insertional events and self. Identify P. sorghi isolate that induces HR on the line W22.

Last Modified: 10/23/2014
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