Stem distortion of wheat
1946
Blodgett, E.C. | Schultz, H.K.
A particular type of stem distortion of wheat has been found to be perpetuated from one season to the next by seed of winter wheat. Although this does not definitely preclude the possibility that insects or parasitic organisms are involved, it indicates that the condition may be caused by some genetic factor or possibly by a virus. There is some similarity between the symptoms for stem distortion and those effects from injury by the western wheat aphis. These insects were not observed, however, on the plants at Moscow, and it seems unlikely that any insects or their damage were seed transmitted.
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