Nematode research, cotton infection

Nematode research, cotton infection

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Credit: STEPHEN AUSMUS/US DEPARTMENT OF AGRICULTURE/SCIENCE PHOTO LIBRARY

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Caption: Nematode research, cotton infection. Plant pathology researchers examining cotton roots with a microscope to determine the level of infection by the reniform nematode (Rotylenchulus reniformis). Nematodes are small unsegmented worms. They are generally 1-2 millimetres long. By comparing infection levels in resistant types of cotton plants (Gossypium sp.) to control samples that are more susceptible, researchers can identify the types with the most resistance.

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