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United States Department of Agriculture

Agricultural Research Service

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Image Number D457-1

Geneticist Peter Cousins inoculates a grape seedling with an aggressive root-knot nematode strain. Seedlings that are resistant are candidates for use as rootstocks.

Photo by Peggy Greb.

640 pixels wide: (d457-1.jpg)

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Last Modified: 3/14/2017
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