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Project Leader(s): Gary C. Bergstrom
(Plant Pathology, Ithaca), Mark E. Sorrells (Plant Breeding, Ithaca),
Stewart M. Gray (USDA-ARS, Plant Pathology, Ithaca)
Cooperator(s): Lance Davidson
(Graduate Student, Plant Pathology, Ithaca); Mark Ochs (Consultant-Certified
Crop Advisor, Trumansburg); Bruce Austic (Grain Producer, Trumansburg);
Janice Degni (CCE Field Crops Specialist, Cortland); Michael Stanyard
(CCE Field Crops Specialist, Newark); Stan Kawamoto (Research Support
Specialist, Plant Pathology, Ithaca).
Type of grant: Pest-resistant
crops
Project location(s): Throughout
the Northeast
Abstract: Soil infestation by
a new virus, wheat soilborne mosaic virus (WSBMV), was recently confirmed
in a localized area of the Finger Lakes region. The virus has the potential
to reduce significantly the yield of New York winter wheat. A NYS-IPM
supported project was initiated in 2000 with objectives to assess the
current range of occurrence of WSBMV in New York, to assess its effect
on wheat yield, and to identify adapted winter wheat varieties that
are resistant to both SBWMV and wheat spindle streak mosaic virus (WSSMV),
another soilborne virus that commonly infects New York wheat. Through
cooperative survey with extension educators and seed industry personnel,
WSBMV was confirmed during 2000 and 2001 in Cayuga, Schuyler, Seneca,
Steuben, and Tompkins Counties on the wheat cultivars Harus, Marilee,
Pioneer 25W33, and Caledonia. A WSBMV winter wheat cultivar nursery
was established in an infested field in Trumansburg. An identical nursery
was planted at Ithaca-Caldwell Field which has a history of WSSMV. Preliminary
data on virus reactions of adapted cultivars were collected in 2000
and 2001. It appears that there is a broad range in virus reaction among
New York-adapted cultivars. In cultivar selection, farmers should use
only data summarized over multiple years. Cultivar nurseries for 2002
evaluation were planted at both the Trumansburg and Ithaca sites. Based
on the 2000 and 2001 preliminary results, a proposal has been submitted
to the NE-SARE program of USDA to secure funds for continuation of this
project.
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