Search Results

You are looking at 1 - 10 of 32 items for :

  • Refine by Access: All x
Clear All
Open access

H. Brent Pemberton, Kevin Ong, Mark Windham, Jennifer Olson, and David H. Byrne

Rose rosette disease (RRD) is incited by a negative-sense RNA virus (genus Emaravirus), which is vectored by a wind-transported eriophyid mite (Phyllocoptes fructiphilus). Symptoms include witches broom/rosette-type growth, excessive prickles (thorns), discolored and distorted growth, and, unlike most other rose diseases, usually results in plant death. RRD is endemic to North America and was first described in Manitoba, Wyoming, and California in the 1940s. It has spread east with the aid of a naturalized rose species host and has become epidemic from the Great Plains to the East Coast of North America on garden roses in home and commercial landscapes where losses have been high. The disease was suggested to be incited by a virus from the beginning, but only recently has this been confirmed and the virus identified. The presence of the vector mite on roses has been associated with RRD since the first symptoms were described. However, more recently, the mite was demonstrated to be the vector of the disease and confirmed to transmit the virus itself. As a result of the RRD epidemic in North America and its effects on the national production and consumer markets for roses, a research team comprising five major universities (Texas, Florida, Tennessee, Oklahoma, and Delaware), a dozen growers and nurseries (all regions), six rose breeding programs (California, Wisconsin, Texas, and Pennsylvania), the major rose testing programs (Earth-Kind and AGRS), the major rose organization (American Rose Society), and the major trade organization AmericanHort has formed. This research project has been funded by the Specialty Crops Research Initiative through the U.S. Department of Agriculture (USDA) with the short-term objective of improving and disseminating best management practices (BMPs) and the long-term goal of identifying additional sources of resistance and developing the genetic tools to quickly transfer resistance into the elite commercial rose germplasm.

Full access

Eric T. Stafne, Edward W. Hellman, R. Keith Striegler, James A. Wolpert, and Jean-Mari Peltier

committee addressed an overall priority of NGWI to enhance outreach education for grape producers by targeting development of a GCoP for the eXtension system ( eXtension, 2012 ) via the SCRI of the U.S. Department of Agriculture (USDA) and the Cooperative

Free access

Binoy Babu, Gary Knox, Mathews L. Paret, and Francisco M. Ochoa-Corona

-linked immunosorbent assay nor a rapid lateral flow immunoassay is commercially available for testing RRV. A multidisciplinary team of scientists united by the USDA SCRI project entitled Combating rose rosette disease: Short and long term approaches is developing

Free access

Cari A. Schmitz, Matthew D. Clark, James J. Luby, James M. Bradeen, Yingzhu Guan, Katherine Evans, Benjamin Orcheski, Susan Brown, Sujeet Verma, and Cameron Peace

USDA-SCRI RosBREED project. The germplasm set provides efficient allelic representation of current parents in the large, publicly funded U.S. apple breeding programs of Cornell University (CU), Washington State University (WSU), and the University of

Free access

Kim E. Hummer, Joseph D. Postman, John Carter, and Stuart C. Gordon

. (SOAEFD). We also thank Dr. Brian Fenton and P. Lava Kumar, SCRI, for undertaking the molecular analysis of the mites. The mites were studied at SCRI under the conditions of a license from SOAEFD. The cost of p ublishing this paper was defrayed in part by

Free access

J.G. Carew, K. Mahmood, J. Darby, P. Hadley, and N.H. Battey

to thank Rex Brennan (SCRI, Dundee, Scotland) and Steve Adams (HRI, Welles-bourne) for their comments on the manuscript.

Free access

John Carter, Rex Brennan, and Michael Wisniewski

1 To whom reprint requests should be addressed. E-mail address: rbrenn@scri.sari.ac.uk Support from the Scottish Office Agriculture, Environment and Fisheries Dept., is gratefully acknowledged. Part of R

Open access

Lucy K. Bradley, Ellen M. Bauske, Thomas A. Bewick, John R. Clark, Richard. E. Durham, Gail Langellotto, Mary H. Meyer, Margaret Pooler, and Sheri Dorn

committee members and reviewed the history of the plan development ( Bauske et al., 2015 ); former ASHS president Dr. John Clark, one of the many participants in the planning of the Specialty Crop Research Initiative [SCRI (National Institute of Food and

Full access

Chrislyn A. Particka, Eric T. Stafne, and Timothy E. Martinson

for this issue was a regional grant project called the Northern Grapes Project. The Northern Grapes Project was a Coordinated Agricultural Project funded in 2011 by the U.S. Department of Agriculture (USDA) Specialty Crops Research Initiative (SCRI

Free access

Chad E. Finn, Bernadine C. Strik, Brian Yorgey, Robert R. Martin, and Margaret M. Stahler

of red raspberry in the background of ‘Newberry’ through ‘Logan’, ‘Boysen’, and SCRI 75158B1 helps explain ‘Newberry's’ color and appearance. ‘Newberry’ was originally selected for its large fruit size, very good flavor, vigor, productivity, and