| Abstract Detail
Breeding and Genetics Douches, David [1], Coombs, Joseph [1], Driscoll, Jarred [1], Estelle, Jay [1], Kirk, William W [2]. Late Blight Evaluation of Breeding Lines: National Breeder Trial Results. LATE blight of potato, caused by Phytophtora infestans, is a devastating disease of potatoes world-wide during both production and storage. Michigan State University (MSU) has conducted inoculated late blight field trials since 1996. Beginning in 2003, the National Breeder Late Blight Trial was established to evaluate breeding lines from multiple breeding programs in the US for late blight reaction. Twelve different breeding programs have submitted material for testing. Trials were planted early June as a randomized complete block design with three replications. Plots were inoculated late July with an isolate cocktail containing P. infestans isolates characterized to overcome all known R-genes. Foliar disease evaluations were conducted a minimum of four times per season to generate Relative Area Under the Disease Progress Curve (RAUDPC) values for each line. From 2003-2005, 113 of the 274 breeding lines evaluated were classified as having foliar resistance in the inoculated late blight field trials. In 2005, additional observational testing was conducted on early generation material, with 44 of the 208 lines evaluated characterized as having foliar resistance. The MSU Muck Soils Research Farm, Bath, MI continues to be premier late blight testing site in North America to aid breeders in testing, selecting, and developing late blight resistant varieties.
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1 - Michigan State University, Department of Crop and Soil Sciences, 499B Plan and Soil Sciences Building, East Lansing, Michigan, 48824, United States
2 - Michigan State University, Plant Pathology, 35 Plant Biology Building, Wilson Road, East Lansing, MI, 48824, United States
Keywords:
National Breeder Late Blight Trial, Phytophtora infestans.
Session: PAA10-2
Location: Hall of Ideas Room G/Monona Terrace
Date: Thursday, July 27th, 2006
Time: 8:45 AM
Abstract ID:116 |
