Plant Sciences Masters Theses

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Browsing Plant Sciences Masters Theses by Subject "Anthracnose."

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    Identification of New Sources of Resistance to Anthracnose in Climbing Bean Germplasm from Guatemala
    (North Dakota State University, 2017) Maldonado Mota, Carlos Raul
    Anthracnose, caused by Colletotrichum lindemuthianum (Sacc. and Magnus) Briosi and Cavara is a fungal disease that affects common bean worldwide. Seed yield loses sometimes reach 100% when the seed is infected and environmental conditions favor the disease. Climbing beans in Guatemala represent the main source of protein for the habitants of this region (9.4 kg/person/year). Unfortunately, anthracnose threatens climbing bean production in the region. Six races were found among samples collected in Guatemala Highlands using the standard common bean differential lines. Also, a germplasm collection from ICTA Guatemala was evaluated for resistance to C. lindemuthianum race 73, which is the predominant race in the U.S. Approximately 10% of 369 climbing bean accessions showed no symptoms (score of 1). GWAS results using 78754 SNP markers indicated that genomic regions for resistance to C. lindemuthianum exist in Pv04 and Pv07.