JSM 2004 - Toronto

Abstract #302217

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Activity Number: 117
Type: Contributed
Date/Time: Monday, August 9, 2004 : 10:30 AM to 12:20 PM
Sponsor: Section on Statistical Consulting
Abstract - #302217
Title: Evaluation of the Use of Molecular Markers to Identify and Select Genotypes
Author(s): Ted B. Bailey*+
Companies: Iowa State University
Address: Dept. Statistics, Ames, IA, 50010,
Keywords: molecular markers ; simple sequence repeats ; Marker-Assisted Selection ; Iron-Deficiency Chlorosis ; selection efficiency
Abstract:

An experiment designed to evaluate the efficacy of Marker-Assisted Selection (MAS) for Iron-Deficiency Chlorosis (IDC) in a soybean population was carried out in four environments. Identification of desirable genotypes was based on three simple sequence repeat (SSR) molecular markers that had previously shown to be linked to genes conferring IDC resistance. The effects of three SSR markers was determined using means, a measure of selection efficiency and genotype frequencies. A 2.6-fold selection efficiency relative to selection based on phenotype and up to 73% of lines with superior IDC resistance possessed genotypes favorable for IDC resistance. The effects of specific markers, and marker combinations, were shown to be dependent on environment.

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