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United States Department of Agriculture

Agricultural Research Service

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Image Number D1710-1

The white areas on these normally purple-colored petunias are the result of a research technique called “virus-induced gene silencing” (VIGS). Researchers are using the technique to quickly determine the function of genes involved in flower longevity.


Photo by Peggy Greb.

640 pixels wide: (d1710-1.jpg)

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Last Modified: 6/27/2017
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