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Genome mapping technique speeds process of finding specific genes
Date:3/24/2010

tide polymorphisms, or SNPs, were compared at 250,000 sites across the genomes of many individuals. The genomes were matched up against specific traits for each individual in order to find SNPs that are associated with the trait of interest. If scientists were looking for plants that produce high seed yields, for example, they would compare the genomes of plants that have a range of seed yields. The places where the genomes match in individuals with high seed yields are possible locations of sought-after genes.

Genome-wide association mapping is a faster process because fewer plants - usually in the hundreds - need to be grown and phenotyped. Finding genetic associations among multiple phenotypes could reveal more information about how those characteristics might be connected.

Of the 107 phenotypes used in the research, Salt was responsible for phenotyping the plants for 18 characteristics, which focused on nutrient and micronutrient content. He said the next step in the research would be to test those associations to determine the genes responsible for particular plant characteristics.


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Contact: Brian Wallheimer
bwallhei@purdue.edu
765-496-2050
Purdue University
Source:Eurekalert

Page: 1 2

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