Evaluation of Common Bean Cultivars Resistance to the Bean Common Mosaic Necrosis Virus in Western Kenya
International Journal of Genetics and Genomics
Volume 7, Issue 4, December 2019, Pages: 115-118
Received: Oct. 1, 2019; Accepted: Oct. 14, 2019; Published: Nov. 15, 2019
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Mangeni Bonphace Collins, Department of Biological Sciences, Masinde Muliro University of Science and Technology, Kakamega, Kenya
Ndong’a Millicent, Department of Biological Sciences, Masinde Muliro University of Science and Technology, Kakamega, Kenya
Mukoye Benard, Department of Biosafety and Phytosanitary, Kenya Plant Health Inspectorate Service (KEPHIS), Kephis Headquarters, Nairobi, Kenya
Were Hassan Karakacha, Department of Biological Sciences, Masinde Muliro University of Science and Technology, Kakamega, Kenya
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The common bean (Phaseolus vulgaris), is a high protein crop and the main legume in the cropping system of western Kenya. Despite its importance, common bean yields are low (<1.0 t/ha) and declining. Bean Common mosaic virus (BCMV) and Bean common mosaic necrosis virus (BCMNV) are the most common and most destructive and can cause a yield loss as high as 100%. In Kenya, limited cultivars and exotic genotypes with resistance to BCMV and BCMNV strains have been reported. Reports indicate BCMNV being a widespread virus compared to BCMV in western Kenya. This study therefore, sought to screen popular cultivars for resistance to the virus. Sixteen popularly grown bean cultivars together with cowpea (Vigna unguiculata), soybean (Glycine max) and groundnut (Arachis hypogaea) were planted in a green house in a completely randomized block design with three replicates. The plants were inoculated with BCMNV Enzyme Linked Immunosorbent Assay (ELISA) positive isolate at 3-leaf stage. Data was taken weekly for 3 weeks on type of symptoms expressed and number of plants infected. Ten bean cultivars were susceptible, 4 tolerant and 2 resistant. For improved yields of common bean, farmers should be advised to plant certified seeds for all legumes in the cropping system.
Beans, BCMNV, Resistance, Screening
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Mangeni Bonphace Collins, Ndong’a Millicent, Mukoye Benard, Were Hassan Karakacha, Evaluation of Common Bean Cultivars Resistance to the Bean Common Mosaic Necrosis Virus in Western Kenya, International Journal of Genetics and Genomics. Vol. 7, No. 4, 2019, pp. 115-118. doi: 10.11648/j.ijgg.20190704.15
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