Question

in a vegetable garden most of the bhindi plants were infected with yellow vein mosaic diseases .can you suggest how does the diseases spread from one plant to another ? Name the causative agent of the diseases

Answer 1

hi

Disease Tobacco Mosaic:

This plant disease is caused by Tobacco Mosaic Virus (TMV). It is known to occur in all tobacco growing countries of the world. It was first described in detail by Adolph Mayer in 1886. Tobacco Mosaic Virus specially infects tobacco and members of family Solanaceae. The virus may affect more than 150 genera of herbaceous dicotyledonous plants including many vegetables, flowers and weeds.

Symptoms:

It produces mosaic like symptoms on plants. The symptoms on the healthy plant appear after ten days of infection. The first symptom is light green coloration between the veins of the young leaves. This is quickly followed by the development of mosaic or mottled pattern of light and dark green areas in the leaves.

Etiology:

Causal organism

Genus: Tobamovirus symptoms.

Disease Cycle:

It is the most persistent plant virus. It has been known to survive 50 years in dried plant parts. The most common sources of virus inoculum for TMV are the debris of infected plants that remain in the soil and certain infected tobacco products which contaminate workers hand.
Control Measures:

There are no known chemical treatment used under field conditions that eliminate viral infection from plant tissues once it occurs.

However, some important control measures to check the infection are:

i. Discarding infected plants.

ii. Growing virus free plants.

iii. Propagate plants via seeds rather than vegetatively.

iv. Crop rotation.

v. Growing of resistant strains.

vi. Removing of all weeds during and after the growing season.

vii. Disinfecting tools by placing them in boiling water for 5 minutes and washing with a strong soap or detergent solution.

viii. Discouraging use of tobacco by workers.

ix. Encouraging the practice of washing hands by workers with soap and water before and after handling plants.

~~~~~||~~~~~~~~
THANKS
please mark as a brainliest answer