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Corn+Soybean Digest

Cotton DNA Database Launched to Help Find Plant Resistance

The Agricultural Research Service (ARS) has joined Cotton Incorporated (CI) and Clemson University Genomics Institute (CUGI) in launching the Cotton Microsatellite Database online at: www.mainlab.clemson.edu/cmd.

Unlike other major crops, cotton did not have a publicly available database for DNA markers. Lack of markers and maps has been a major limiting factor in the development of DNA-based tools to identify important agronomic traits and facilitate selection of plants based on these traits.

When a specific marker is associated with a gene governing resistance to a specific pest or disease, it can be used as a diagnostic tool to identify plants with potential resistance. This is only the first step toward developing a DNA marker database and creating a map of the cotton genome.

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