Virus-free Canna Sources?
Kindness Matters (NE Ohio 6a)
6 years ago
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popmama (Colorado, USDA z5)
6 years agoKindness Matters (NE Ohio 6a) thanked popmama (Colorado, USDA z5)Related Discussions
Virus free v. Virus indexed
Comments (17)If you are interested and willing to search (Google or Bing), check out some of the articles on AGDIA, which is a company that makes tests for viruses and other diseases of plants. You can see the PCR and ELISA tests that are available for roses (and for many other plants.) Do you know the word "Synergy"? Not the new age version, but the science based synergy- there are some interesting plant pathology sites out there as well. Briefly, Synergy means that diseaseA has X symptoms and disease B has Y symptoms, but when a plant has diseases A&B, the plant will not have a simple mix of X and Y symptoms, but often will also have new (call them Z) symptoms that may be worse that the sum of X and Y. Where does that leave rose growers? It leaves rose growers wanting to keep their plants as healthy as possible so that no even more damaging symptoms appear. Years ago a simple study was done in California roses. Under optimum conditions, roses with a single virus (as tested for back then) produced ten to fifteen per cent fewer blooms. That, economically, was reason to keep the plants as clean as possible. And to the root to root transmission: Google Scholar papers by Giolino (author), roses, and the time period last ten years....See MoreSources For Virus-Free Cannas?
Comments (7)Just a brief follow up to the above post; I cannot speak for "most tissue culture labs", but I have grown a few thousand virus indexed plants from a lab (FL.) that are virus free. The few labs I am familiar with have been able to produce virus free offspring from contaminated parent plants. Depending on the type of virus infection (it is typically more than one) the procedures and protocols involved may change to help insure the offspring are virus free. Once a few offspring are proofed to be virus free they use the clean stock to continue the TC production. This is only one scenario and I am sure there are other possibilities. Of course, the simplest solution for any grower or lab is to have clean stock to start. Growing cannas from seed will typically produce virus free plants (to the best of my knowledge), but it cannot be an absolute given. Most viruses are RNA linked but the badnavirus CYMV is DNA linked. This may be a sticky point. A few growers over the years have reported virus infection in seedlings. We really need to further explore this possibility. The real problem with growing from seed is that one cannot grow any of our very best and most beautiful cultivars. Kent...See MoreCanna Virus Resistance
Comments (2)Ontac55, Thanks for posting and glad you are able to grow your Canna Musaefolia free of virus symptoms. The Musaefolia group of canna cultivars (Banana Cannas) are considered to be hybrid cultivars (not a species) such as ‘Musaefolia Hybrida’, 'Musaefolia Rubra’, 'Musaefolia Grande’ along with several other cultivars. Roughly 15/20 years ago when the canna virus first began to be more widely recognized many breeders sought to breed cultivars that seemed to be resistant (viral symptom free for most of the growing cycle). Resistance is usually considered a good thing but in the long term it has likely contributed to the widespread transmission of the disease. Viral resistance tends to be subjective in cannas. We often find growing location, temperature etc. produces plant growth that allows the plant to grow faster than the viral load; hence we get few if any viral symptoms. This resistance certainly varies between cultivars and where they may be growing. The positive side is that you are able to grow a great canna. The negative side is IF it does carry one of the canna viruses it can and likely will be transmitted (Typhoid Mary). If possible consider posting a photo. We might be able to I.D. the one you grow. Kent...See MoreDoes this canna Tropicana have the virus?
Comments (11)IF my 1 gallon Tropicanna was infected, it is not showing any signs of it. It grew like crazy, putting on 7-10 new growths, foliage shows no odd markings, and it flowered great on that first lead. The plant as purchased had one lead under 2' tall and one 4" start. Next year will tell more. It was potted in an official gold and black Tropicanna plastic pot with wide show label on stake. Other local home improvement sources only had the more expensive 2 gal size. I waited until late June? to get it when most were gone and got 25% off. I was really waiting to take off. I was generous with a slow release pellet 10-10-10 fertilzer and was rewarded. I'm going to risk adding a 'Tropicanna Black' = 'General Eisenhower' this year. I'll wait until they are in the sun a month or so, to see if pot/water stress helps indicate any sign of virus. I ordered 6 other canna from good sources and will keep them isolated until I can study them a little. These include some large forms such as 'Russian Red', C. musifolia (green form and a red ribbed) to add foliage drama and 'Intrigue' for accent. Canna are related to Banana's. And I'm not sure whether or not they can share viruses. My hardy Musa basjoo looks very healthy. I've ordered hardy Chinese Golden Lotus (Musella lasiocarpa) seed. And I've ordered Ensete ventricosum 'Maurelii' from a virus free claimed tissue culture source. The latter of these and Brugmansia will be among the plants I'll overwinter inside. A Canna 'Australia' was next to my 'Tropicanna' and did great also. That's a 8-9' tall Joe Pye 'Gateway' behind in a tub sitting in 4" of water in the bog section of the pond. It didn't fill out as much as usual and looks potbound, so will bump it up this year. My Basjoo was from Hirt's as a ~6" start in a 4" pot. The crown hit over 4' in one summer and it has a few starts too, many larger than my original purchase. The photo below shows a stressed plant, due to late season weather with temps under 40 F. It is still in ground, now trimmed and tent tarped for winter, for a fast 2017 start. Should have a nice little grove there (and bigger cane Golden Vivax Bamboo behind) by this fall! (click photo to view) Near the Cannas, I'm testing two hardy Ginger Hedychium varieties (mulched and in ground too) to see if I can get decent flowering. Many grow well here but H. 'Tara' is supposed to be obe if the few that flower well here. However, just to hard headed, I'm testing 'Dr Moy' and 'Elizabeth'. I found them locally, the leaves looked healthy even in late fall, when I found them on close out ... you guessed it ... on sale. Hey anyone have a 'Tara' to trade? As the beds fill in, I'll thin out what doesn't perform well. I we so look forward to warming weather, with subtropicals adding interest to our northern garden, and Brugmansia fragrance wafting by ... and over the cedar fence ... confusing our neighbors. Did I mention there's 150 crocus, 50 Hyacinth, and 30 Poet's Narcissis now hiding in the ground already? And the Sarcococca humilis ground cover and Daphne by the front entrance are showing buds? And firely orange Witch Hazel 'Jelina' buds started unfurling a couple days ago? The fun just started ......See MoreKindness Matters (NE Ohio 6a)
6 years agonicholsworth Z6 Indianapolis
6 years agolast modified: 6 years agoKindness Matters (NE Ohio 6a) thanked nicholsworth Z6 IndianapolisKindness Matters (NE Ohio 6a)
6 years agonicholsworth Z6 Indianapolis
6 years agolast modified: 6 years agoKindness Matters (NE Ohio 6a) thanked nicholsworth Z6 IndianapolisKindness Matters (NE Ohio 6a)
6 years agonicholsworth Z6 Indianapolis
6 years agoKindness Matters (NE Ohio 6a) thanked nicholsworth Z6 Indianapolispopmama (Colorado, USDA z5)
6 years agoNicole_GA
6 years agopopmama (Colorado, USDA z5)
6 years agoKindness Matters (NE Ohio 6a) thanked popmama (Colorado, USDA z5)Kindness Matters (NE Ohio 6a)
3 years ago
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