Page Banner

United States Department of Agriculture

Agricultural Research Service

Download a high-resolution (300dpi) digital image here

Image Number D247-2

Technician J’Lynn Howell (right) homogenizes hydrilla samples while plant physiologist Franck Dayan observes the presence of carotenoids (the yellow layer in the test tube) that indicate the plant is herbicide resistant.

Photo by Stephen Ausmus.

640 pixels wide: (d247-2.jpg)

Please visit our Image Gallery

Last Modified: 8/13/2016
Footer Content Back to Top of Page