Is this Cucumber Mosaic Virus and could it come from seeds? - Ask Extension
I planted 5 Chelsea Prize hybrid cucumber plants all from the same seed source, 3 from transplants I started indoors and 2 direct seeded in 4 differen...
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Is this Cucumber Mosaic Virus and could it come from seeds? #880907
Asked August 10, 2024, 9:42 AM EDT
I planted 5 Chelsea Prize hybrid cucumber plants all from the same seed source, 3 from transplants I started indoors and 2 direct seeded in 4 different locations (1 transplant each in separate raised beds across from one another separated by an arched trellis, 1 transplant in a raised bed along with several summer squash plants, and 2 direct sown in a 10 gallon fabric pot). I also planted Marketmore and Spacemaster cucumbers direct sown from seed in separate fabric grow bags which do not show any disease. I came home after 7 days of vacation to find all of the Chelsea Prize cucumbers with yellowing of the leaves with curling and drooping and stunted fruit as shown in the photographs. One grow bag with cantaloupes adjacent to the cucumbers was also affected. I pulled out all of the plants and put them in the garbage. Do you think this is cucumber mosaic virus? Since there was no evidence of disease on the other cultivars of cucumbers, yet all of the of Chelsea Prize hybrid plants showed evidence of the disease, is it possible that the seeds were infected? I still have some of the seeds from this packet.
Washtenaw County Michigan
Expert Response
It appears you may have Cucumber mosaic virus (CMV) which has one of the largest host ranges of all plant viruses, including nearly 1,200 plant species worldwide. It is often confused with tobacco mosaic, tomato mosaic or herbicide damage. The disease is transmitted by aphids but seems to overwinter in perennial weeds (and maybe seeds). Sanitation is very important in the garden and with tools. Selecting genetically-resistant crop varieties to plant is the best option to prevent the disease from occurring. Read the articles in the attached links:
https://extension.psu.edu/cucumber-mosaic-virus
https://extension.sdstate.edu/understanding-and-managing-cucumber-mosaic-virus
https://u.osu.edu/vegetablediseasefacts/tomato-diseases/high-tunnel-diseases/cucumber-mosaic/ - open the pdf file for info
https://pddc.wisc.edu/2016/10/31/cucumber-mosaic/
https://hortsense.cahnrs.wsu.edu/fact-sheet/cucumber-pumpkin-squash-cucumber-mosaic-virus/
Positive ID would need to be made by submitting samples to MSU Plant & Pest Diagnostics (Plant & Pest Diagnostics-MSU)
https://extension.psu.edu/cucumber-mosaic-virus
https://extension.sdstate.edu/understanding-and-managing-cucumber-mosaic-virus
https://u.osu.edu/vegetablediseasefacts/tomato-diseases/high-tunnel-diseases/cucumber-mosaic/ - open the pdf file for info
https://pddc.wisc.edu/2016/10/31/cucumber-mosaic/
https://hortsense.cahnrs.wsu.edu/fact-sheet/cucumber-pumpkin-squash-cucumber-mosaic-virus/
Positive ID would need to be made by submitting samples to MSU Plant & Pest Diagnostics (Plant & Pest Diagnostics-MSU)
Thank you very much for your response! It was very helpful.
Julie A. Kovach, MD, MSEd, FACC, FASE
Regards,
Julie A. Kovach, MD, MSEd, FACC, FASE
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On Aug 10, 2024, at 9:16 PM, Ask Extension <<personal data hidden>> wrote: