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ViewAttendees 6

Member Symposium

Ecology, Epidemiology, and Management of Whiteflies and Whitefly-transmitted Viruses in the United States

19: Evaluation of Cucurbita germplasm for resistance to whiteflies and whitefly-transmitted viruses

On-Demand

Presenting Author(s)

Cecilia McGregor

University of Georgia
Athens, Georgia

Co-Author(s)

EW

Emily Wang

University of Florida
Homestead, Florida
AL

Alex Luckew

University of Georgia
Athens, Georgia
MP

Mathews Paret, n/a

The University of Florida - North Florida Research and Education Center
Quincy, Florida
RC

Renato Carvalho

University of Florida
Gainesvillw, Florida
Ad

Andre da Silva

Auburn University
Auburn, Alabama
JC

Joara Candian

University of Georgia
Tifton, Georgia
DB

Dutta Bhabesh

University of Georgia
Tifton, Georgia
SB

Sudeep Bag

University of Georgia
Tifton, Georgia
NK

NagaCharan Konakalla

University of Georgia
Tifton, Georgia
Rajagopalbabu Srinivasan (he/him/his)

University of Georgia
Griffin, Georgia
SK

Saritha Raman Kavalappara

University of Georgia
Tifton, Georgia
GM

Geoffrey Meru

University of Florida
Homestead, Florida

Summer squash are some of the most susceptible crops to whitefly transmitted viruses like Cucurbit leaf crumple virus (CuLCrV) and Cucurbit Yellow Stunting Disorder Virus (CYSDV). Resistant varieties remain one of the most successful and cost-effective methods to limit crop losses due to pests and diseases. Resistance to whitefly transmitted viruses can be achieved by targeting resistance to individual viruses, or by limiting infection by targeting resistance to the whitefly vector. The aim of this study was to evaluate Cucurbita accessions from the USDA germplasm collection for resistance to whiteflies and whitefly-transmitted viruses in Georgia and Florida. Virus resistance was evaluated through a combination of visual disease severity scores and molecular methods while whitefly egg, nymph and adult counts were done visually. C. moschata accessions with high levels of resistance were identified, while the resistant C. pepo accessions had intermediate resistance. These genotypes are potential sources of resistance for future breeding efforts for resistance to whiteflies and whitefly-transmitted viruses in summer squash.