Year | Countrya | Resistant cultivars and breeding lines | Number of screened cultivars or lines | Evaluation method | Reference(s) |
---|---|---|---|---|---|
1983 | Japan | (Resistance levels differed among the materials, although no highly resistant cultivars/lines were found.) | 293 | Injection of bacterial suspension into soil at germination | |
1983 | Japan | Kujuu | 17 | Inoculation of sterilized seeds | Hirashima and Wakimoto (1983) |
2006 | USA | LM-1, Drew | 6 | Inoculation of 28-day-old-plants | Sayler et al. (2006) |
2014 | USA | (Lesion sizes were too inconsistent to be used to differentiate resistance levels among cultivars.) | 300 | Seedlings were needle inoculated. | Wamishe et al. (2014) |