“…Several investigations reported that STB resistance is either quantitative or qualitative, and the inheritance of the resistance may follow dominant, partially dominant, epistatistic, recessive, additive, and non-additive gene action (McCartney et al, 2002;Chartrain et al, 2009 be monogenic or oligogenic, and the near-complete nature of resistance follows the gene-for-gene model (Somasco et al, 1996;Arraiano, 2001;McCartney et al, 2002;Brading et al, 2002). Other authors claimed that resistance was often quantitative, polygenic and provides partial resistance to a wide variety of isolates (Jlibene et al, 1994;Simon and Cordo, 1998;Zhang et al, 2001;Chartrain et al, 2004;Arraiano and Brown, 2006). The partial resistance is durable under field conditions and is expressed as a reduction in epidemic development (Chartrain et al, 2004).…”