[OGD] Orchid Virus
Hi all, I am seeking a better understanding of some aspects of virus that effect orchids. I understand that the virus can remain as a protein type material in dead plant tissue indefinitely. And also, perhaps in potting media. And reactivates when it comes in contact with plant material. Perhaps my understandings are not correct. I appreciate the response, thankyou, Dick Thomson ___ the OrchidGuide Digest (OGD) orchids@orchidguide.com http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
[OGD] Malaysian / Malayan orchid ?
Dear Nik Fahmi, According to OSSEA records and also confirmed in the records in RHS, both the registrant and originator of Arachnis Maggie Oei is John Laycock, who was then a well-known lawyer and orchid enthusiast in Singapore. Laycock made the hybrid in 1935 and raised it in the Singapore Botanic Gardens. Arachnis Maggie Oei was described in the Malayan Orchid Review in 1941, but the registration date is given as 1940 in Sander's List and as 1950 in RHS. Singapore, Malacca and Penang (two British settlements in Malay Peninsula) became the Straits Settlements in 1826 under the control of British India until 1946. On 1 April 1946, Singapore became Crown Colony. Penang and Malacca became part of the Malayan Union in 1946, and later the Federation of Malaya in 1948. Malaya is equivalent to Malaysia. Malayan is an adjective word of Malaya. Regards, Frederick Ho Singapore ___ the OrchidGuide Digest (OGD) orchids@orchidguide.com http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
[OGD] Slc Anzac
'Orchidhurst' , netted the owner a culture award in 1967. Jose ___ the OrchidGuide Digest (OGD) orchids@orchidguide.com http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
[OGD] Slc Anzac, AOS and Wildcatt
Wildcatt does not include Awards prior to 1970 : the awards recorded in the Register of Awards and its six Supplements. Slc Anzac 'Kelly' AM/AOS was granted with point score of 80 points at the Regular Judging meeting held at the Oakland Center on October 1963. It is recorded at RA Supplement IV , page 687 . The record includes a picture. The Cultural Award for the owner of 'Orchidhurst' was granted with point score of 82 points at on March 1967. It is recorded at RA Supplement VI page 1040 . Jose ___ the OrchidGuide Digest (OGD) orchids@orchidguide.com http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
[OGD] Re: Onc. Twinkle
In a message dated 5/5/05 3:28:25 AM, [EMAIL PROTECTED] writes: We had Twinkle from the original cross made by Goodale Moir in the '60s, I think, with very few seedlings from it, but not until it was re-made and widely distributed commercially did one become aware of it. It's been a wonderful little plant. That makes sense. I imagine it's true of a lot of plants. Also, there are some orchids, as well as other plants, which actually grow far better under lights than in a greenhouse. I recently won Best Oncidium Alliance (at a small show) with Twinkle 'Red Fantasy,' having about 600 flowers. Somebody told me that 'Red Fantasy' is from a reciprocal cross (ornithorrhynchum as the mother). However, it will never get a CCM, at least by me, as the leaf tips burn under lights. Iris ___ the OrchidGuide Digest (OGD) orchids@orchidguide.com http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
Re: [OGD] Slc Anzac, AOS and Wildcatt
Jose, That is correct but remember I stated 'quality award'. A CCM is not a quality award but a cultural award. icones - Original Message - From: "Jose A. Izquierdo" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Cc: Sent: Thursday, May 05, 2005 5:46 AM Subject: [OGD] Slc Anzac, AOS and Wildcatt Wildcatt does not include Awards prior to 1970 : the awards recorded in the Register of Awards and its six Supplements. Slc Anzac 'Kelly' AM/AOS was granted with point score of 80 points at the Regular Judging meeting held at the Oakland Center on October 1963. It is recorded at RA Supplement IV , page 687 . The record includes a picture. The Cultural Award for the owner of 'Orchidhurst' was granted with point score of 82 points at on March 1967. It is recorded at RA Supplement VI page 1040 . Jose ___ the OrchidGuide Digest (OGD) orchids@orchidguide.com http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com ___ the OrchidGuide Digest (OGD) orchids@orchidguide.com http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
[OGD] Slc Anzac and common orchid viruses.
Title: Slc Anzac and common orchid viruses. Dick, my understanding of the two major orchid viruses is the same as yours. People make major mistakes in areas like taking a virused plant out of the greenhouse and forgetting to sanitize the bench space the plant was formerly occupying. Hey presto, new roots hit virused debris on the bench and the cycle continues. Slc Anzac 'Orchidhurst' was generally considered totally virused by 1970. This doesn't seem to mesh with the claim of Vacherot and Lecoufle who claimed all their meristems had been made from virus-free mother stock. They were the source of most plants of Slc Anzac in circulation. But, in 1954, a virus-free division of the mother plant had been sold at a very high price to a grower in New Zealand by the name of Frank Gronwall. He was fastidious and maintained the plant clean of virus and amassed quite a large stock of the plant. In the mid 1980's I secured a plant of the clean Anzac from him and sent part of this plant to Ned Nash at Armacost & Royston/Stewarts. Also, I used it to make a 4n version of Slc Jewel Box with a tetraploid C. aurantiaca I owned. The seedlings in the remake were very interesting. Orange rather than red and smaller as they showed much more of the aurantiaca influence. I have made one hybrid with the 4n Jewel Box and the progeny are very even and fast growing. Slc Anzac could be very variable in color depending on temperatures. It was a strange hybrid in that it purported to contain 25% L. purpurata, something I have never believed. Maybe the other parentage which had C. dowiana at 50% was in fact correct. And as all Kiwis and Aussies well know the name was the acronym of The Australian and New Zealand Army Corps, a brave group of young men sent ineptly into war by Winston Churchill against the Turks in WW 1. People outside of NZ and Australia rarely understood why Churchill was always held in fairly low regard downunder but few families were lucky not to lose at least one of their number on the other side of the world in the First World War. Andy Easton ___ the OrchidGuide Digest (OGD) orchids@orchidguide.com http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
[OGD] Virus infectivity
"Mr Richard Thomson" <[EMAIL PROTECTED]> spaketh thusly: > Hi all, I am seeking a better understanding of some > aspects of virus that effect orchids. I understand that > the virus can remain as a protein type material in dead > plant tissue indefinitely. And also, perhaps in potting > media. And reactivates when it comes in contact with > plant material. > Perhaps my understandings are not correct. I think you'd have to specify which virus or viruses concern you. Some plant viruses are remarkably stable; one strain of a tobacco tobamovirus demonstrated infectivity from pressed herbarium specimens that were 45 years old (Randles, Search 2: 30, 1971). On the other hand, cymbidium mosaic potexvirus live no more than 25 days without a host (Brunt, A.A., Crabtree, K., Dallwitz, M.J., Gibbs, A.J., Watson, L. and Zurcher, E.J. (eds.) (1996 onwards). `Plant Viruses Online: Descriptions and Lists from the VIDE Database. Version: 20th August 1996). But cymbidium ringspot tombusvirus can live as long as 300 days (ibid). There are no data on the LIV (longevity of infectivity) for odontoglossum ringspot tobamovirus, at least as I can find. Given the longevity of other tobamoviruses, it could be infective for years as the stability of this family of viruses is remarkable. Others are quite short-lived; vanilla necrosis potyvirus has an LIV of 1-2 days (ibid). Look at it this way: common cold viruses are relatively short-lived outside the host, with rhinoviruses lasting on the order of minutes. Hepatitis, on the other hand, can last 14 days on a clean, dry surface with nothing more than old back issues of "People" magazine to read. Given the number of viruses that infect orchids at least occasionally, and that at least some of these viruses are particularly long-lived in the absence of a living host, there are certain precautions that should be taken. I recommend burning your collection annually, and start with new plants at least once a year. Fire is strong medicine, but it cures all ills. Except maybe prions. Cheers, -AJHicks Chandler, AZ ___ the OrchidGuide Digest (OGD) orchids@orchidguide.com http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
[OGD] Cypripedium
Title: Cypripedium Hello All: Pursuant to a discussion on another List: can anyone tell me what is the name of the wild "Yellow Lady Slipper" that I am growing in my garden in acid soil in Eastern Maritime Canada? Regards, Rand ___ the OrchidGuide Digest (OGD) orchids@orchidguide.com http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
[OGD] Malayan Hybrid
Viateur, Nik and Fred have already told you the origin of Arachnis Maggie Oei and explained why "Malayan" is more accurate than "Malaysian". I consider Maggie Oei to be a Malayan hybrid because John Laycock created the hybrid in Malaya ... if you really want to split hairs, he lived and worked in the "British Straits Settlements of Malaya". Both the hybrid's parents also reside in Malaya, and a natural hybrid between the 2 parents (Arachnis maingayi) occurs in Malaya. Up to 1961, "Malaya" referred to both a political unit (admittedly the name changed a few times) and a geographic area. Although the political unit has changed, the words "Malaya" and "Malay Peninsula" refer to the same geographic area, which is which I publish my discoveries in the "Malayan Orchid Review", not the "Malaysian Orchid Review". Arachnis Maggie Oei is therefore a Malayan hybrid no matter what the political units are called. Malaysia did not exist before 1961. It came into existance when Malaya, Singapore, Sabah, and Sarawak joined in a federal union. The name "Malaysia" is compound created from the names of these 4 states. Singapore withdrew from the federation 2 years later, so Malaysia is currently a political unit occupying most of the Malay Peninsula and most of North Borneo. Since Arachnis Maggie Oei occurs in the wild in Malaysia (the Malay Peninsula bit) as a natural hybrid, a garden escape and from wind-blown seeds, the Malaysian press is probably entitled to refer to it as a "Malaysian hybrid", though I think their phrase "local hybrid" is less misleading. OK ? Peter O'Byrne in Singapore ___ the OrchidGuide Digest (OGD) orchids@orchidguide.com http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
Re: [OGD] Virus infectivity
Title: Re: [OGD] Virus infectivity The discussion on viruses got me thinking about the virus lectures we had in a Plant Pathology course I took 35 years ago. I dug up my old note book, who knows why I kept it. One of the paragraphs I wrote in my notes relates to using milk to block the infection of TMV. Field workers on many tobacco farms smoked during the 60's and the supervisors trying to keep the fields clean would have them all wash their hands and boots with a mixture of powered milk. The idea was that the milk protein would coat the virus particles on the worker and inhibit infection of the plants they were working on. To see if this was still thought of as true, I did a quick search and found this article. http://www.gov.on.ca/OMAFRA/english/crops/facts/01-017.htm It had this on working with tomatoes to prevent virus infection Dip tools and gloved hands in undiluted skim milk or virucidal disinfectant between every plant. The skim milk should contain at least 3.5% protein, and as soon as the milk starts to go sour, or curdles, replace with fresh milk. It has a lot of other recommendations. Would this work on orchids, who knows? If you have some virus infected plants or you are worried about viruses, try it and see what happens. -- --Tom / | Tom Hillson Agriculture Computer Services Manager |(515) 294-1543 College of Agriculture | Iowa State University - |"The only thing I have too much of is too little time" ___ the OrchidGuide Digest (OGD) orchids@orchidguide.com http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
[OGD] Re: Pumice
Thanks for your help Ray, the pumice that I have commanded will arrive next week and I do not know if it is really round. If it is not, I could perhaps mix it with some Seramis (I have some and is really round), do you think this would be a good idea? Thanks again Olga ___ the OrchidGuide Digest (OGD) orchids@orchidguide.com http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
[OGD] Yellow Cypripedium Eastern Maritime Canada
Rand who asked: >Pursuant to a discussion on another List: can anyone tell me what is >the name of the wild "Yellow Lady Slipper" that I am growing in my >garden in acid soil in Eastern Maritime Canada? Not having seen a picture of it, the name more than likely is Cypripedium parviflorum var. parviflorum, or Cypripedium parviflorum var. pubescens. Peter ___ the OrchidGuide Digest (OGD) orchids@orchidguide.com http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
[OGD] Slc Anzac
Back in the late 60's, I was given a piece of Slc Anzac 'Triza'. I am not certain of the "Triza' as that was quite smeared and the original tag is long gone. I can find no reference to any Cattleya or catt cross with the name Triza. I'm aware that this could be a name bestowed by some owner and really doesn't mean much of anything. Thought I'd ask to see if anyone out there knows differently. Thanks for the help. Gary ___ the OrchidGuide Digest (OGD) orchids@orchidguide.com http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
[OGD] natural hybridization
I am wondering why we don't see more natural hybridization between orchid species. I'd appreciate an explanation and/or some guidance on which reference(s) might shed some light on this. Thanks Duane ___ the OrchidGuide Digest (OGD) orchids@orchidguide.com http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
[OGD] RE: Cypripedium
Assuming it is the North American plant (not a Erasian), it would be C. parviflorum. However this species is quite variable, the large form is var. pubescens and a smaller flowered form is var. parviflorum. There is a third variety, also small flowered, var. makasin (not recognized by all authorities). In the South there is another yellow ladyslipper with a very large and quite uniquely shaped lip, C. kentuckiense. Jim Pyrzynski ___ the OrchidGuide Digest (OGD) orchids@orchidguide.com http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
Re: [OGD] Re: Pumice
I don't know how it will affect the capillarity, but you can experiment. Ray Barkalow - First Rays Orchids - www.firstrays.comPlants, Supplies, Artwork, Books and Lots of Free Info! - Original Message - From: Olga Caussade To: Orchids@orchidguide.com Sent: Thursday, May 05, 2005 3:23 PM Subject: [OGD] Re: Pumice Thanks for your help Ray, the pumice that I have commanded will arrive nextweek and I do not know if it is really round. If it is not, I could perhapsmix it with some Seramis (I have some and is really round), do you thinkthis would be a good idea?Thanks againOlga___the OrchidGuide Digest (OGD)orchids@orchidguide.comhttp://orchidguide.com/mailman/listinfo/orchids_orchidguide.com ___ the OrchidGuide Digest (OGD) orchids@orchidguide.com http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
[OGD] Re: Orchids Digest, Vol 7, Issue 241
Tom wrote: > It had this on working with tomatoes to prevent virus infection > > Dip tools and gloved hands in undiluted skim milk or virucidal > disinfectant between every plant. The skim milk should contain at > least 3.5% protein, and as soon as the milk starts to go sour, or > curdles, replace with fresh milk. > > It has a lot of other recommendations. > > Would this work on orchids, who knows? If you have some virus > infected plants or you are worried about viruses, try it and see what > happens. > > -- > --Tom Hello Tom, After reading A.J.'s answer to curing viruses, I think I've come up with a great way to clean tools and plants, get rid of virused plant material and keep the milk fresh all in one: buy a cow, feed the plant material to it and use the milk (via nature's milk delivery system) produced to 'jet off' the tools and plants. I can see selection of dairy cattle by protein produced and high nozzle velocity! Maybe the 'offal' can be used to fertilize the plants? Sounds sustainable to me! charles -- Charles Ufford Calen the Border Collie CGC - now in Heaven Oriskany, NY USA IPA, Central NY and Southern Tier Orchid Societies [EMAIL PROTECTED] http://www.paphiopedilum.net Http://www.geocities.com/charlesufford ___ the OrchidGuide Digest (OGD) orchids@orchidguide.com http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
[OGD] Re: Orchids Digest, Vol 7, Issue 241 Viruses
In a message dated 5/5/05 3:28:36 PM, [EMAIL PROTECTED] writes: << I recommend burning your collection annually, and start with new plants at least once a year. Fire is strong medicine, but it cures all ills. Except maybe prions. Cheers, -AJHicks Chandler, AZ >> This is the best advice I have seen offered for those who are always seeking ways to maintain a virus free collection of orchids. Aseptic technic I am somewhat reluctant to tell that I do not attempt to practice aseptic technic in dividing plants, although with my professional background I believe I am as familiar with the technic as anyone. As an undergraduate I majored in bacteriology; and as a physician I practiced thoracic and cardiovascular surgery where aseptic technic was absolutely essential. The first five years of growing orchids I did all of the maneuvers advised by many, using a clean razor blade to cut all plant tissue, or instruments which had been sterilized by flame. After reading reviews by several experts in the field of plant virology, and observing the lack of any semblance of sterile technic by many successful growers, I came to the conclussion that to carry out proper sterility the following would have to be done: All cutting instruments should be flame sterilized between plants; no dipping of plants in a common bucket of fertilizer, no dipping of potted plants in a common bucket for insect control; one would need to scrub their hands between handling all plant material; all new plants would need isolation for at least three months, and then checked for virus prior to going into the collection; no two plants could touch each other; overhead plants could not be watered, if water were to drip on any plants below; mounted plants could not be hung up on walls and watered as water would splash on to other plants; plants could not spend any time outside as they would be cross contaminated by wind, rain, and insects; all pots, tags, hangers, and stakes would need to be sterilized before reused; and insect control would need to be 100% effective. Literally, each individual plant would need its own specific wardian chamber to remain disease free. Does that mean I have never had virus in my collection? Of course not. On the rare occassion of seeing color break in flowers, and assuming this was virus, I have discarded the plant. On the rare occassion I have seen what I thought was most likely virus, but without any problem with growth, or flowering, I have merely continued to grow it as previously, and enjoy the flowers. I have a fairly large collection, often in excess of 1000 plants, some of which I have been growing for more than 25 years. While I do not even suggest the collection is free of virus, I am not aware of a problem in growth or flower production, and the collection has not been adversely affected in receiving ribbons, trophies, and AOS awards. I personally doubt any collection of any size or age is free of virus, especially if it contains many Cattleyas, or Cymbidiums. I suppose there may be a few large, mixed collections which are free of virus, but I will give odds that the total number in the USA can be counted on the fingers of one hand. Wilford Neptune ___ the OrchidGuide Digest (OGD) orchids@orchidguide.com http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
[OGD] natural hybrid vs. man-made hybrid
Peter [O'Byrne] wrote : "Maggie Oei ... John Laycock created the hybrid... a natural hybrid between the 2 parents (Arachnis maingayi) occurs ... Arachnis Maggie Oei occurs in the wild ... as a natural hybrid, a garden escape and from wind-blown seeds" So, if somenone re-makes the natural hybrid by crossing the two parents [Arachnis hookeriana x Arachnis flosaeris], you get Arachnis Maggie Oei or Arachnis x maingayi ? *** Thanks for explaining why you prefer to use the word 'Malayan' instead of 'Malaysian' contrary to the various news sources quoted about the naming of an orchid hybrid after Malaysia's PM's Wife. Regards, Viateur ___ the OrchidGuide Digest (OGD) orchids@orchidguide.com http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
[OGD] Polystachya kermesina
Dear OGDers, I am interested in locating a plant of Polystachya kermesina, a high elevation cool-growing miniature orchid from Africa. I understand from Cordelia Head, of J&L Orchids, Connecticut, that quite a few years ago (1980s?), they had successfully raised plants from seed, and had sold many of them to customers far and wide. However, they no longer have plants available, and I have not been able to find plants elsewhere. If anyone on this list knows where I might locate a seedling or division of P. kermesina for sale, would you kindly contact me off list? My Polystachya paniculata would like some company. Thank you, Cynthia Hill ___ the OrchidGuide Digest (OGD) orchids@orchidguide.com http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
