| Number of differential hosts | Type of differential hosts | Number of isolates evaluated | Origen of isolates | Physiol ogical races    determined | Reference | 
      
        | 6 | Commercial pepper and cucurbit cultivars | 49 | Georgia | 10 root rot races | [65] | 
      
        | 26 | NM-RIL | 20 | Brazil | 8 root rot races | [53] | 
      
        | 26 | NM-RIL | 12 | New Mexico, Turkey, Holland, and Argentina | 12 foliar blight races | [59] | 
      
        | 31 | Commercial pepper lines and cultivars | 4 | Michigan, USA | 4 root rot races | [54] | 
      
        | 42 | Commercial tomato cultivars and wild relatives | 4 | Michigan, USA | 4 root rot races | [61] | 
      
        | 26 | NM-RIL | 17 | New Mexico, California, and Holland | 13 root rot races | [63] | 
      
        | 11 | Commercial pepper lines and cultivars | 34 | California, New Mexico, North Carolina, and Turkey | 14 root rot races | [56] | 
      
        | 8 | Commercial pepper lines and cultivars | 5 | Guangdong, China | 2 root rot races | [24] | 
      
        | 18 | Commercial pepper lines and cultivars | 10 | New Mexico, New Jersey, Italy, Korea, and Turkey | 9 root rot races 5 foliar blight races
 | [17] | 
      
        | 21 | Solanaceous, cucurbits and legumes | 26 | Italy | 13 root rot | [34] | 
      
        | 10 | Solanaceous and cucurbits | 30 | Argentina, California, North Carolina, England, Japan, Mexico,    New Mexico, Peru, East Virginia | 14 root rot | [60] |