Evaluation location: California, United States
A test with three repetitions (Test 3298) was used to test 30 PI's and 4 checks for reaction to BNYVV (rhizomania), BWYV (virus yellows), and agronomic traits including root and sugaryield, type and end use, root and petiole color, and bolting tendency. The test was planted May11, 1998 in the field under rhizomania infested conditions. Roots were not harvested. Natural infection by Erysiphe polygoni (powdery mildew) occurred and individual plots were scored. Individual plants within each entry were scored for reactions to rhizomania based on a scale of 0 to 9, where a rating of 0 to 3 was considered resistant and 4 to 9 susceptible. No accession was found more resistant than the resistant checks. Because of very light virus yellows incidence,entries were not scored for virus yellows