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United States Department of Agriculture

Agricultural Research Service

Research Project: Genetic Enhancement of Common Bean Using Exotic Germplasm for Biotic and Abiotic Stress Tolerance

Location: Tropical Crops and Germplasm Research

Title: Release of ‘XRAV-40-4’ black bean (Phaseolus vulgaris L.) cultivar

Authors
item Beaver, James -
item Prophete, E. -
item Rosas, J. -
item Godoy-Lutz, G. -
item Steadman, T. -
item Porch, Timothy

Submitted to: Journal of Agriculture of the University of Puerto Rico
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: February 28, 2014
Publication Date: May 2, 2014
Citation: beaver, J.S., Prophete, E.H., Rosas, J.C., Godoy-Lutz, G., Steadman, T.G., Porch Clay, T.G. 2014. Release of ‘XRAV-40-4’ black bean (Phaseolus vulgaris L.) cultivar. Journal of Agriculture of the University of Puerto Rico. 98:83-87.

Interpretive Summary: Black common bean production in the lowlands of Central America and the Caribbean is threatened by viral diseases. Bean golden yellow mosaic virus (BGYMV), a whitefly-transmitted begomovirus, can cause significant reduction in common bean seed yield when susceptible bean cultivars are planted in Central America and the Caribbean. Bean common mosaic virus (BCMV) is a seed-borne disease that can also cause yield loss in susceptible cultivars. Recently released black bean cultivars in Central America have resistance genes and a quantitative trait locus that provide resistance to both viruses. Bean lines that combine the dominant I and the recessive bc-3 genes have resistance to all known strains of BCMV and BCMNV. This research effort resulted in black bean breeding lines for Central America and the Caribbean that pyramid genes for resistance to BGYMV, BCMV and BCMNV.

Technical Abstract: Black bean (Phaseolus vulgaris L.) production in the lowlands of Central America and the Caribbean is threatened by viral diseases. Bean golden yellow mosaic virus (BGYMV), a whitefly [Bemisia tabaci (Gennadius)]-transmitted begomovirus, can cause significant reduction in common bean seed yield when susceptible bean cultivars are planted in Central America and the Caribbean. Bean common mosaic virus (BCMV) is a seed-borne disease that can also cause yield loss in susceptible cultivars. Recently released black bean cultivars in Central America have the bgm-1 and I resistance genes and the SW12 QTL that provide resistance to BGYMV and BCMV. Unfortunately, bean cultivars with an unprotected I gene produce a top necrosis reaction when infected with Bean common mosaic necrosis virus. Bean lines that combine the dominant I and the recessive bc-3 genes have resistance to all known strains of BCMV and BCMNV. The objective of this research was to develop black bean breeding lines for Central America and the Caribbean that pyramid genes for resistance to BGYMV, BCMV and BCMNV.

Last Modified: 8/27/2014
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