TY  - EJOU
AU  - R, uíz-Salazar  
AU  - Muruaga-Martínez, JS  
AU  - Vargas-Vázquez, MLP  
AU  - Alejandre-Iturbide, G  
AU  - Castañón-Nájera, G  
AU  - Hernández-Delgado, S  
AU  - Almaraz-Abarca, N  
AU  - Mayek-Pérez, N  

TI  - SCAR molecular markers to identify disease resistance sources in ayocote beans (<i>Phaseolus coccineus</i>)
T2  - Phyton-International Journal of Experimental Botany

PY  - 2016
VL  - 85
IS  - all
SN  - 1851-5657

AB  - In order to identify genes of resistance to four diseases that affect <i>Phaseolus</i> sp. [i.e, Common Bacterial Blight (CBB), Bean Common Mosaic Virus (BCMV), Bean Golden Mosaic Virus (BGMV) and angular leaf spot (ALS)], we amplified nine SCAR (Sequence Characterized Amplified Regions) markers: four linked to resistance to common blight, two for BCMV, two for BGMV and one for ALS. The genetic material included 16 ayocote bean (P. <i>coccineus</i>) populations collected from different locations at Veracruz and Puebla, Mexico. Populations from Veracruz showed greater number of SCARs for BGMV and ALS compared with populations from Puebla. The best <i>P. coccineus</i> populations were Jalapa, Veracruz and Acultzingo (Veracruz); Nauzontla, and Zacapoaxtla (Puebla). Cluster analysis separated the bean populations evaluated by geographical origin, but mainly by the presence of two of the nine amplified markers (SU91 and LG5). The study populations, mainly those of Veracruz, should be used in breeding programs to generate segregating populations with genetic resistance to the major diseases of beans in Mexico, since they showed high frequencies of SCARs.
KW  - Species Bean
KW  -  Molecular Markers
KW  -  Disease resistance
KW  -  Common Bacterial Blight
KW  -  Bean Common Mosaic Virus
KW  -  Bean Golden Mosaic Virus
KW  -  Angular Leaf Spot

DO  - 10.32604/phyton.2016.85.184