virus Learn more about virus
-
Several common orchid viruses and their transmission routes
1. Common orchid virus 1. Cymbidium mosaic virus CymbidiumMosaicVirus referred to as CyMV (1) Cymbidium mosaic virus infected orchid plants often have a tendency to produce gangrene, such as black gangrene spots, gangrene stripes and so on. In addition to the gangrene in the leaves and stems of susceptible plants, the flowers are also.
2018-07-19 -
Several Common Orchid Viruses and Their Transmission Routes
Cymbidium mosaic virus is referred to as CyMV (1) disease Cymbidium mosaic virus infected orchid plants often have a tendency to produce gangrene disease, such as black gangrene spots, gangrene stripes and so on. In addition to leaf and stem gangrene, flower gangrene can also occur in infected plants.
2018-03-05 -
Master the manuring methods of edible fungi, several common orchid viruses and their transmission routes
Several common orchid viruses and their transmission routes
2019-06-03 -
Pig semen-the Vector of virus Transmission (2)
Pig semen-the Vector of virus Transmission (2)
2020-10-12 -
To understand the relationship between flower planting and meteorological conditions, and the types of flower virus diseases.
Types of flower virus diseases
2019-06-08 -
Pig semen-the Vector of virus Transmission (3)
Pig semen-the Vector of virus Transmission (3)
2020-10-29 -
What is a virus-free potato?
What is a virus-free potato? What are the characteristics of virus-free potatoes? Please also know the netizens to help introduce the disadvantages of non-virus-free potatoes and the advantages of virus-free potatoes, which are listed in detail below for netizens' reference. The disadvantage of non-virus-free potato: the potato is rich in nutrition and short in growth period.
2018-07-17 -
Orchid virus diseases General characteristics
Orchid virus disease is the number one killer affecting orchid cultivation, orchid lovers all talk about virus and color change. Orchid virus disease is everywhere. It infects not only cultivated orchids but also wild orchids grown in nature. Once infected by the virus, orchids can be appreciated and cultivated...
2018-07-19 -
Diagnose orchid virus by yourself
Diagnose orchid virus by yourself
2018-05-04 -
General characteristics of the virus
General characteristics of the virus
2018-05-03 -
Potato virus disease
(1) the pathogens and pathogens that can infect potatoes and cause losses are potato virus X, virus Y and so on. Potato mosaic virus (PVX) is a linear virus with a length of 520-550nm. Sometimes the central pores of virus particles can be seen under electron microscope. When the virus shell is formed by subunits, its horizontal pattern can be seen, which is the main difference from potato heavy mosaic virus in morphology and structure. Potato heavy mosaic virus (PVY) is a kind of virus with a long length of 680.
2019-01-16 -
Plant virus and Orchid variation
Plant virus and Orchid variation
2018-05-06 -
How to prevent tomato virus disease reasonably? (Control methods included)
How to prevent tomato virus disease reasonably? (Control methods included)
2020-04-17 -
What is potato "virus-free seed potato"? Can I eat it?
Potato is a common vegetable, which often appears on the table. The price is not high, economical and nutritious. However, in recent years, potato has been attacked by virus in the process of planting, and the yield of potato has declined.
2020-11-09 What yes potatoes "virus-free seed potatoes " can you eat them? -
Occurrence and control of carnation virus disease in protected area
Symptom recognition carnation vein mottle disease carnation leaf vein mottle virus infects carnation, Chinese carnation and American carnation, all produce systematic mosaic, and old leaves often appear hidden phenomenon in winter. Discoloration spots appeared on the petals, especially in the varieties of large red flowers. Carnation latent virus disease Carnation generally shows no symptoms or mild mosaic symptoms after being infected by the virus. However, mosaic symptoms occurred when carnation latent virus and carnation vein mottle virus were co-infected. Carnation
2019-01-16 -
How to prevent and cure rape virus disease?
How to prevent and cure rape virus disease? Please guide the occurrence of rape virus disease symptoms in all rape producing areas throughout the country, especially in winter rape areas in North, Southwest and Central China. The symptoms of the disease were slightly different due to different types of rape. Chinese cabbage type rape and mustard type rape mainly produce chlorosis along both sides of leaf veins, and the leaves are yellow and green alternately.
2018-07-19 -
Food Safety Preventive measures of Avian Influenza virus
Avian influenza virus, which belongs to influenza A virus, can be divided into three grades: high, medium and low non-pathogenic according to the pathogenicity of avian influenza virus to chickens and turkeys. What are the food safety precautions against avian influenza virus? Virus characteristics of Influenza A
2020-11-11 Avian influenza virus food safety preventive measures avian influenza -
How to effectively prevent and cure chrysanthemum virus disease?
How to effectively prevent and cure chrysanthemum virus disease? Please introduce that virus disease is a kind of disease easy to occur in chrysanthemum, which needs to be prevented and treated. 1. Strict quarantine. Chrysanthemum virus disease strain is a virus-carrying body, introduction should be carried out strict quarantine, to prevent the artificial transmission of the virus to the virus-free area, or from the virus area, expand the disease area.
2018-07-18 -
Persistence of transmission of porcine reproductive and respiratory syndrome (prrs) virus
Porcine reproductive and respiratory syndrome (PRRS) virus has a great impact on the economic benefits of the global pig industry. The disease increases mortality, reduces pig production performance and growth rate, and increases the cost of vaccines and drugs. Although many prevention and control measures have been put forward, their effects are still different after implementation, so these measures are not suitable for some pig farms. PRRS virus has long-term pathogenic infectivity and can spread horizontally and longitudinally. Fetuses in the womb and piglets before weaning are infected with the virus late and can be transmitted to
2019-01-16 -
High incidence of virus disease in broccoli in summer and autumn how to control virus disease in broccoli
High incidence of virus disease in broccoli in summer and autumn how to control virus disease in broccoli
2018-07-14