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ARS Home » Pacific West Area » Pullman, Washington » Grain Legume Genetics Physiology Research » Research » Publications at this Location » Publication #411510
Research Project: Enhancing Yield, Disease Resistance, and Agronomic Performance in Edible Legumes

Location: Grain Legume Genetics Physiology Research

Title: Evaluation of pinto genotypes of common bean for resistance to anthracnose

Author
item MWENSE, BRIAN - University Of Zambia
item HAMABWE, SWIVIA - University Of Zambia
item KUWABO, KUWABO - University Of Zambia
item MATAA, MEBELO - University Of Zambia
item Miklas, Phillip - Phil
item MUKUMA, CHIKOTI - University Of Zambia
item KAMFWA, KELVIN - University Of Zambia

Submitted to: Legume Science
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 3/13/2024
Publication Date: 6/1/2024
Citation: Mwense, B., Hamabwe, S., Kuwabo, K., Mataa, M., Miklas, P.N., Mukuma, C., Kamfwa, K. 2024. Evaluation of pinto genotypes of common bean for resistance to anthracnose. Legume Science. 6(2). Article e228. https://doi.org/10.1002/leg3.228.
DOI: https://doi.org/10.1002/leg3.228

Interpretive Summary: Anthracnose is a fungal disease that limits dry bean production worldwide. The disease is seed-borne so it is easily passed on through infected seed. Severe epidemics result in complete crop failure. The best control method is to deploy naturally occuring resistance genes into dry bean cultivars. This research conducted in Zambia investigates the anthracnose resistance genes present in a diverse panel of pinto bean breeding lines and cultivars. The panel of 56 accessions was screened with seven different anthracnose races that are present in Zambia. Three pinto accessions were found to have superior resistance to six of seven races. The three resistant pinto beans were bred by us (USDA-Prosser) purposely for resistance to multiple diseases including anthracnose. These three pinto bean breeding lines with superior resistance will provide bean breeders worldwide with a source of useful germplasm for improving anthracnose resistance in pinto and other dry bean market classes.

Technical Abstract: Common bean (Phaseolus vulgaris L.) is an important crop grown for household revenue, food and nutrition security in many parts of the world especially in Africa and Latin America. Anthracnose is a major disease of common bean globally. The objective of this study was to determine the response of selected pinto bean genotypes to seven races of Colletotrichum lindemuthianum the causative fungus for anthracnose. A total of 56 pinto bean genotypes and two checks were evaluated for resistance to C. lindemuthianum races 51, 65, 73, 247, 253, 263 and 1085. Significant differences were observed among the 56 pinto genotypes in their reaction to the seven races, which was generally skewed towards susceptibility except for races 51 and 73. There was no genotype that was resistant to all seven races. In general, the genotypes that showed resistance to most of the races were those that carried Co-42, which highlighted the importance of this locus to anthracnose resistance in pinto beans. Three genotypes NDZ14006-4, NDZ14110-4 and NDZ14043 showed superior resistance (resistant to six of the seven races).