ASSOCIATION MAPPING REVEALS REGIONS ON CHROMOSOMES Pv03 AND Pv05 RELATED TO ANTHRACNOSE RESISTANCE IN COMMON BEAN

摘要

Common bean anthracnose, caused by Colletotrichum lindemuthianum (Sacc. & Magnus) Briosi & Cavara, is a serious disease that, under disease-promoting conditions, can result in yield losses up to 100 percent. Currently, resistance to C. lindemuthianumis attributable to one or more of 20 anthracnose resistance loci identified by the symbol Co. They map on eight chromosomes: PvOl, Pv02, Pv03, Pv04, Pv07, Pv08, Pv09, and Pvl 1 (Meziadi et al. 2016). Genome-wide association study (GWAS) is a tool to perform high-resolution mapping using germplasm collections that have minimal genetic structure. GWAS takes advantage of cumulative recombination generating natural variation in populations. The objective of this study was to perform GWAS analyses on 89 common bean accessions from Brazil inoculated with race 1545 of C. lindemuthianum.