What kind of virus is tobacco flower virus?

It is an RNA virus that contains only one nucleic acid RNA tobacco mosaic (virus) disease.

1. Removal of toxic sources: In tobacco planting areas dominated by TMV, it is necessary to start from the seeds and remove the diseased residues mixed in the seeds, which can reduce the chance of susceptibility at the seedling stage. Combined with field management, weeds or wild hosts in the seedbed and its vicinity should be eradicated in time, and at the same time, the plants with early disease in the seedbed and tobacco field should also be uprooted as soon as possible to reduce the source of poison.

Fertilizers mixed with diseased residues that are not adequately decomposed should be avoided.

2. Breeding and utilization of disease-resistant varieties: under natural conditions, different kinds of tobacco, mosaic disease occurrence and harm degree are obviously different, therefore, the use of tobacco varieties with different resistance varieties and germplasm resources, cross breeding, in order to obtain more ideal disease-resistant materials. The varieties of anti-44, "6315" and "6024" that have been used in production, as well as NC567, "628", 744", CBL-ler51, COKER86 and COB ER176 introduced from abroad in recent years, have played a good role in controlling the hazards of this disease.

At present, the disease-resistant or disease-resistant varieties planted in our province mainly include Cuibi No. 1, Yunyan 85, K346, etc., and Kirk 176 varieties can also be planted in a small range in places with serious mosaic diseases.

3. Reasonable arrangement of crop stubble or interplanting different crops in tobacco fields: interplanting tobacco with wheat, corn and other crops has obvious disease prevention effect, and this measure has been accepted by tobacco farmers in many tobacco-producing areas.

4. Strengthen crop rotation: In places where mosaic disease has occurred seriously in recent years, compulsory rotation should be implemented for more than 2 years. In areas where conditions permit, the rotation of water and drought crops is implemented, and the disease prevention effect is better.

5. Strengthen the cultivation and management of tobacco fields: tobacco beds should be selected away from vegetable gardens, baking rooms, and drying sheds and apply "net fertilizer". Deep ploughing of tobacco fields can eliminate or reduce the primary source of TMV infection.

When agricultural operations are carried out in the seedbed and field growth period, especially when topping and wiping the buds, it should be carried out in the order of the disease-free area (plant) first and then the diseased area (plant). Operators should pay attention to washing their hands with soapy water to avoid human infection. In the early stage of mosaic disease, plant balancer can be sprayed in time or a small amount of fast-acting fertilizer, soil cultivation and watering, which has a certain effect on reducing the disease.

The landlord is describing the morphology of some bacteria, and viruses and bacteria are not the same thing, viruses are much smaller than bacteria, and they are not usually studied in detail.

You're talking about the fireworks grass leaf virus, right?

Tobacco mosaic virus is an RNA virus that contains only one nucleic acid RNA

1 Pinyin 2 English references.

3 Chinese name.

4 English name.

5 Types of Classification.

6 Classification 7 Genebank Number.

8 Basic characteristics of tobacco mosaic virus.

yān cǎo huā yè bìng dútobacco mosaic virus

TMV tobacco mosaic virus.

tobacco mosaic virus；TMV species. Broomviridae, Tobacco Mosaic Virus, Tobacco Mosaic Virus.

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Tobacco mosaic virus has been found in tobacco in Shandong, Hebei, Shanxi, Sichuan, Beijing, Shanghai and other places in China. The virions are long rod-shaped, 18 nm 300 nm in size, the nucleocapsid is helical, and the nucleic acid is SSRNA. The virus infects ordinary tobacco and three-life tobacco to produce spotted flowers and leaves, and infects heart leaf tobacco to produce local dead spots.

Virus infection pepper produces necrotic spots, and infected peas are yellowed and leaflets.

Tobacco mosaic virus was developed by Soviet scientist D i.Discovered by Ivanowski in 1892.

In 1901, another British virologist, Ennis Best, also discovered the tobacco mosaic virus and named it the tobacco mosaic virus (TMV). Guess the sedan chair shot.

The tobacco mosaic virus caused on tobacco is the first example of a virus being described. It was the first virus to be discovered and inspired new research advances in microbiology, immunology and medicine. Ivanowski conducted a preliminary analysis and experiment with strange lesions on the adult cotyledons of T obac, and by filtering the lesion tissue, he found that even if the filtered liquid was sterile, it could still infect healthy tobacco plants.

This experiment proved that the virus caused by it was filtered out of Suixian, proving that this is a new type of infectious disease theory.

Since then, researchers have conducted extensive research on tobacco mosaic viruses and found similar viruses in other plants. Their research on the virus has not only improved the understanding of virology and immunology, but also laid the groundwork for the discovery of other pathogenic viruses. Later, the field of virus research expanded and now virology is a separate field of study in the life sciences.

In conclusion, the tobacco mosaic virus was developed by Soviet scientist D i.Discovered by Ivanowski in 1892.

This is the first virus to be discovered, proving that infectious viruses are contagious and are new virus theories. Researchers have done a lot of research on this virus and found similar viruses in other plants, improving the understanding of virology and immunology, which also laid the foundation for the discovery of other pathogenic viruses. <>

Tobacco mosaic virus abbreviated as TMV, is an RNA virus, which is the causative agent of tobacco mosaic disease and other diseases, and belongs to the Tobamovirus group. Tobacco mosaic disease and tomato mosaic disease have long been commonly understood. Mosaic symptoms appear on the leaves, the growth is in a bad state, and the leaves are often deformed.

Tobacco is a plant that grew in Mexico from the 15th to the 16th century, and when Columbus, Magellan and others discovered the "New World", they saw that the locals had the habit of smoking, so they brought tobacco back to Europe. After that, the tobacco soon multiplied.

It is commonly known as deaf smoke, crazy smoke, blue and white, and oil head. After the tobacco plant is infected, the lateral veins and branch veins of the young leaves are translucent, that is, the bright veins.

The mesophyll tissue on both sides of the vein gradually turns pale green. The virus proliferates in large quantities in the leaf tissue, causing some mesophyll cells to enlarge or increase, and the leaves are thin and uneven, with yellow and green colors alternating in the shape of flowers and leaves. The degree of mottling of the posterior mosaic leaves increased, and a large area of dark brown necrotic spots appeared, especially the middle and lower old leaves, and the severely diseased leaves were shrunken, deformed, and distorted.

The early onset of the plant internode is shortened, severely dwarfed, slow growth, can not flower and bear fruit normally, and is easy to fall off, the shade fruit that can develop is small and shrunken, the seed amount is small and small, and most can not germinate.

The leaves are mottled, affecting the growth, sprayed three times, and returned to normal, which is no longer a problem, but the prevention and control should be done as soon as possible.

Tobacco mosaic leaves, people, flowers, willows, cut it.

Tobacco mosaic virus is an RNA virus, which is the causative agent of tobacco mosaic disease and other diseases, and belongs to the Tobamovirus group. Tobacco mosaic disease and tomato mosaic disease have long been commonly understood. Mosaic symptoms appear on the leaves, the growth is in a bad state, and the leaves are often deformed.

Tobacco is a plant that grew in Mexico from the 15th to the 16th century, and when Columbus, Magellan and others discovered the "New World", they saw that the locals had the habit of smoking, so they brought tobacco back to Europe. After that, the tobacco soon multiplied. This virus usually acts on plants.

Tobacco flower copy.

Tobacco mosaic virus is an RNA virus that is the causative agent of tobacco mosaic disease.

Symptoms of du mosaic appear on the leaves, and they are shi

Falling into a bad state, the leaf dao is often deformed.

Prokaryotes need to have a cellular structure, and the most common ones are bacteria. Viruses do not possess cellular structures and are therefore not prokaryotes.

Not a prokaryotic because viruses do not have a cellular structure.

No, prokaryotes have cellular organs, viruses do not.