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Al igual que BGYMV, el BDMV tambien se transmite mecanicamente (Morales et al.
La identificacion de fuentes de resistencia al BGYMV facilito la busqueda de materiales resistentes al BDMV.
Otro gen de resistencia a BGYMV fue el bgm-2, el cual es responsable de la resistencia en la linea DOR 303, cuyo origen esta en frijoles de grano negro como el 'Porrillo Sintetico', y en genotipos de la raza Nueva Granada (Morales 2000b; Morales 2001).
Resultados obtenidos por Morales y Niessen (1988) en condiciones de invernadero demostraron la existencia de diferentes mecanismos de resistencia al BGYMV y al BGMV y a otros begomovirus del frijol en diferentes materiales de America Latina.
Morales y Singh (1991) encontraron que existe una variabilidad genetica de tipo aditivo en los materiales que representan los diferentes mecanismos de resistencia al BGYMV.
RMC-3 was resistant to BGYMV in the Dominican Republic and Haiti in 2001 and 2002 with average infection level below 20% and an average score of 2.
1996) in PR9745-232 and RMC-3 confirmed that both have the recessive allele bgm-1 for resistance to BGYMV, whereas the absence of the SCAR marker SW12 suggests that neither breeding line has the QTL associated with resistance to BGYMV found in some Central American black-seeded landraces such as Porrillo Sintetico and Turrialba-1 and their derived breeding lines and cultivars (Miklas et al.
PR9745-232 and RMC-3 will be useful germplasm for regions of Latin America where red-mottled beans are preferred and where BGYMV is prevalent and emerging bean-infecting geminiviruses have been found.
PR9771-1-3 is a BGYMV resistant breeding line from the cross HP8437-95/G35172//HP8437-95.
1] generation was planted at Isabela in November 1998, and subsequent generation advance, BGYMV testing, and development of PR0157-4-1 was the same as for PR0247-49.