RRD?

A meeting place for rose breeders.
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Rosarian_Du_Nord
Posts: 15
Joined: Tue Nov 14, 2017 1:17 pm

RRD?

Post: # 72997Post Rosarian_Du_Nord
Sat May 22, 2021 11:07 pm

Hi Everyone!

I hope it's okay if I post this question here. I'm blissfully ignorant of the rose viruses because I'm fortunate enough to not have experienced any of them personally. Please let me know if the rose in the photos looks like it's infected with RRD. My friend's daughter is wondering what's wrong with it, and it looks like a virus to me.

Thanks!

Tony
Rose pic 2.jpg
Rose pic 1.jpg

bvanderhoek
Posts: 157
Joined: Wed Dec 14, 2011 4:19 pm

Re: RRD?

Post: # 72998Post bvanderhoek
Sun May 23, 2021 4:44 pm

Looks more like mosaic virus to me.

Rosarian_Du_Nord
Posts: 15
Joined: Tue Nov 14, 2017 1:17 pm

Re: RRD?

Post: # 73002Post Rosarian_Du_Nord
Mon May 24, 2021 2:21 pm

Would everyone agree that it has a virus and needs to be destroyed?

Tony

Plazbo
Posts: 198
Joined: Tue May 09, 2017 12:18 am

Re: RRD?

Post: # 73004Post Plazbo
Tue May 25, 2021 4:56 am

If mosaic, not a big issue, doesn't spread without grafting. Can't confirm if mosaic though as the expression is different to what's typically here in Australia.

Depending on where you are in the world, many older types will have mosaic (it's pretty common with a lot of roses here)

henry kuska
Posts: 1088
Joined: Thu Dec 15, 2011 9:06 pm

Re: RRD?

Post: # 73010Post henry kuska
Wed May 26, 2021 2:00 pm

What temperature zone are you in? Roses have an immune system that is more effective against some of the common rose viruses at high temperatures. Without knowing where you live and which actual virus (or viruses) your plant has (plus which strain you have, strong or weak), one cannot predict whether your infection is simply a cosmetic problem or could affect your plants growth and longevity and possible spread to your other roses.

This is a very recent article about plant diseases of economic importance (see page 17 about roses in Table 1):

https://apsjournals.apsnet.org/doi/pdf/ ... 20-1061-FE


The affiliations of the authors in the above paper are:

Authors and Affiliations

M. Fuchs † , School of Integrative Plant Science, Cornell University, Geneva, NY 14456
C. V. Almeyda , Micropropagation and Repository Unit, North Carolina State University, Raleigh, NC 27695
M. Al Rwahnih , Foundation Plant Services, Plant Pathology Department, University of California, Davis, CA 95616
S. S. Atallah , Department of Agricultural and Consumer Economics, University of Illinois, Urbana-Champaign, IL 61820
E. J. Cieniewicz , Plant and Environmental Sciences, Clemson University, Clemson, SC 29634
K. Farrar , Foundation Plant Services, Plant Pathology Department, University of California, Davis, CA 95616
W. R. Foote , Crops and Soil Sciences, North Carolina State University, Raleigh, NC 27695
D. A. Golino , Foundation Plant Services, Plant Pathology Department, University of California, Davis, CA 95616
M. I. Gómez , Charles H. Dyson School of Applied Economics and Management, Cornell University, Ithaca, NY 14853
S. J. Harper , Department of Plant Pathology, Washington State University, Prosser, WA 99350
M. K. Kelly , Department of Agriculture and Markets, Division of Plant Industry, Albany, NY 12205
R. R. Martin , Department of Botany and Plant Pathology, Oregon State University, Corvallis, OR 97331
T. Martinson , School of Integrative Plant Science, Cornell University, Geneva, NY 14456
F. M. Osman , Foundation Plant Services, Plant Pathology Department, University of California, Davis, CA 95616
K. Park , Charles H. Dyson School of Applied Economics and Management, Cornell University, Ithaca, NY 14853
V. Scharlau , Washington Wine Industry Foundation, Cashmere, WA 98815
R. Smith , University of California, Cooperative Extension, Sonoma County, Santa Rosa, CA 95403-2894
I. E. Tzanetakis , Department of Entomology and Plant Pathology, Division of Agriculture, University of Arkansas, Fayetteville, AR 72701
G. Vidalakis , Department of Microbiology & Plant Pathology, University of California, Riverside, CA 92521
R. Welliver , The Pennsylvania Department of Agriculture, Bureau of Plant Industry, Harrisburg, PA 17110
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The following is a more complete discussion of the temperature effect (which applies to some of the rose viruses):

https://sites.google.com/site/temperatu ... virus/home

Rosarian_Du_Nord
Posts: 15
Joined: Tue Nov 14, 2017 1:17 pm

Re: RRD?

Post: # 73015Post Rosarian_Du_Nord
Wed May 26, 2021 10:50 pm

Thanks Plazbo and Henry!

I'm in Zone 4b southern Minnesota. The plant is in Mankato MN.

Tony

Rosarian_Du_Nord
Posts: 15
Joined: Tue Nov 14, 2017 1:17 pm

Re: RRD?

Post: # 73016Post Rosarian_Du_Nord
Wed May 26, 2021 10:54 pm

Plant Heat-Zone 5.

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