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Pathogenic Variation, Host Specialization and Aggressiveness in Helminthosporium Sativum
(North Dakota State University, 1984)
Common root rot, caused by Cochliobolus sativus, is an important disease of spring wheat and barley in the northern Great Plains. While the disease has been widely studied, extensive systematic investigation of pathological ...
Scanning Electron Microscope Examination of Sugarbeet Flowers and Fruits Infected with Phoma Betae
(North Dakota State University, 1980)
There are three natural openings in a mature sugarbeet fruit which serve as avenues of entry for microorganisms: 1) the basal pore which contains dried parenchyma and vascular tissue and is the point where the flower was ...