300 dpi: (d466-1.jpg)
640 pixels wide: (d466-1.jpg)
 Image Number D466-1 |
Grape roots infected with root-knot nematodes. The galling and swelling of the roots are symptoms of nematode infection. The red dots are nematode egg masses, stained for easy visualization.
Photo by Daniel Ng/UC Davis Viticulture.
