Evaluation location: Texas, United States
In order to have standard comparisons, the evaluation included 15 replications of 'Ranger' and 'ACH205' repeated twice as resistant and susceptible controls, respectively. None ofthe entries in this experiment seemed to be resistant to the sugar beet root aphid. In the field, theentries may host fewer aphids than in a controlled greenhouse experiment, however, all would support sugar beet root aphid reproduction and development, since all approached or exceeded a rating of 3.0 on our 1-4 scale. ACH205 and Ranger results were typical of those found in previous experiments, indicating that the aphid source was consistent with previous experiments.
For an Excel (xlsx) file of Michels screening data from 1995 to 2010