Category: Orchid Doctor

VIRUS - CYMBIDIUM MOSAIC: "0" Type of Cymbidium Mosaic Virus

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago On cattleyas it developed brown blotches on blooms days after they opened; see illus. of blotching in A70-310 for comparison; necrotic blotches are streak-like and more numerous at the base of sepa... Read More

VIRUS - CYMBIDIUM MOSAIC: Can it Be Spread by Leaf Contact?

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is not spread by leaf contact but by insects and knives used to cut plants and flowers. A64-407 Read More

VIRUS - CYMBIDIUM MOSAIC: Insect Carriers

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago No carrier of Cymbidium mosaic virus has been proven, but aphids and leaf hoppers, possibly scale insects and snails, are carriers of other virus. A66-55 Read More

VIRUS - CYMBIDIUM MOSAIC: Meristemming to Eliminate Cymbidium Mosaic Virus

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Careful selection of the portion of the meristem selected for propagation may result in virus-free tissue; the seed should be virus-free. A70-148 Read More

VIRUS - CYMBIDIUM MOSAIC: Virulence on Tools and Pots

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Cymbidium Mosaic Virus is virulent on pots for more than a year. A66-926 Read More

VIRUS - DETECTION, IDENTIFICATION, SYMPTOMS, TESTING: Detection by Biological Assay

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is performed on leaves of other plants such as Cassia occidentalis, Gomphrena globosa, Chenopodium amaranticolor, Datura stramonium, and Spathoglottis sp.; for details of inoculation procedures ... Read More

VIRUS - DETECTION, IDENTIFICATION, SYMPTOMS, TESTING: Other Plants Used as Detectors

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Cassia occidentalis is an indicator of Cymbidium Mosaic Virus; Gomphrena globosa, for Tobacco Mosaic Virus. A67-287; A68-431 Read More

VIRUS - DETECTION, IDENTIFICATION, SYMPTOMS, TESTING: Spots and Their Meaning

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Usually light-colored at first, they become elongated lengthwise, then somewhat depressed, later they darken, become necrotic and more depressed; one form on cattleyas produces a ring formation. A7... Read More

VIRUS - DETECTION, IDENTIFICATION, SYMPTOMS, TESTING: Testing by Commercial Laboratory

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Send a leaf or leaves with some visible symptoms, even the expert relies on them; the lower portion of maturing leaves can be sent to Florida West Coast Scientific Labs., address given above on thi... Read More

VIRUS - MERISTEMMING: Elimination by Meristemming Is Not Likely

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A significant part of meristem multiplication is by cell differentiation of presumably virus-infected cells, and these can not be expected to be virus-free. A70-399; A71-622 Read More