Abstract
Resistance to Fusarium root rot (FRR) in common bean (Phaseolus vulgaris L.) has been determined to be a quantitative trait. The objective of this study was to identify quantitative trait loci (QTL) for resistance to FRR in a resistant line MLB-49-89A of common bean. A mapping population of 62 F4:5 recombinant inbred lines (RILs) derived from cross of K132 × MLB-49-89A was evaluated. A second population of 90 F4:5 RILs derived from cross of K20 × MLB-49-89A was used to validate the QTL identified in K132 population. A major QTL with a logarithm of odds (LOD) score of 6.1 and R 2 of 34% was detected between PVBR87 and PVBR109 markers in the K132 population The same markers were significantly associated with resistance in the K20 population (R 2 = 14%, P < 0.001). The QTL could facilitate marker-assisted selection to introgress resistance for FRR into the highly susceptible Andean genotypes widely grown in Uganda.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
