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United States Department of Agriculture

Agricultural Research Service

Title: Rhizomania Resistance in the Tandem Sugar Beet Variety)

Author
item Detemmerman, Nele
item Anfinrud, Mark
item Meulemans, Marc
item Rick, Kristal
item Burkholz, Alexandra
item Debruyne, Erik
item Weyens, Guy
item Barnes, Steve
item Horemans, Stefaan
item Lerebvre, Marc
item Bolton, Melvin

Submitted to: International Sugar Journal
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 4/27/2009
Publication Date: 5/11/2009
Publication URL: http://hdl.handle.net/10113/43892
Citation: DeTemmerman, N., Anfinrud, M., Meulemans, M., Rick, K., Burkholz, A., DeBruyne, E., Weyens, G., Barnes, S., Horemans, S., Lefebvre, M., Bolton, M.D. 2009. Rhizomania Resistance in the Tandem Sugar Beet Variety. International Sugar Journal. 111(1325):313-317.

Interpretive Summary: Rhizomania, caused by beet necrotic yellow vein virus (BNYVV), is a major disease of sugarbeets world-wide. The ‘Holly’ resistance gene (Rz1) confers strong resistance to several BNYVV isolates and has been incorporated into most major sugarbeet breeding lines. However, new variations of the disease have emerged that are able to infect and cause disease in sugarbeet varieties with the Holly resistance gene. Therefore, new sources of resistance to this disease are needed. The Tandem sugarbeet variety combines resistances to BNYVV from the Rz1 gene in conjunction with a proprietary source derived from the sugarbeet relative Beta maritima. Beets from Tandem, Rz1-mediated resistance, and susceptible non-Rz lines were harvested from replicated microplots with heavy Rhizomania disease pressure in the Red River Valley (North Dakota), and were analyzed for virus accumulation, root yield, sugar content and juice purity parameters. Virus accumulation was significantly and uniformly lower in samples from Tandem or Holly than those from the susceptible controls.

Technical Abstract: Rhizomania, caused by beet necrotic yellow vein virus (BNYVV), is a major disease of sugarbeets world-wide. The ‘Holly’ resistance gene (Rz1) confers strong resistance to several BNYVV isolates and has been incorporated into most major sugarbeet breeding lines. However, the threat presented by resistance-breaking isolates of BNYVV, to which the Holly gene does not confer adequate resistance, underscores the need for novel sources of Rhizomania-resistant germplasm. The Tandem sugarbeet variety combines resistances to BNYVV from two sources: the Rz1 gene and a proprietary Beta maritima-derived source. Beets from Tandem, Holly-mediated resistant, and susceptible non-Rz lines were harvested from replicated microplots with heavy Rhizomania disease pressure in the Red River Valley (North Dakota), and were analyzed for virus accumulation, root yield, sugar content and juice purity parameters. BNYVV titers were significantly and uniformly lower in samples from Tandem or Holly than those from the susceptible controls.

Last Modified: 8/24/2016
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