Which is the viral disease of rice?
Two viruses, rice wrinkled stunt disease (RWSD) and witches’ broom disease (WBD) are seedborne. The rice crinkle disease (RCD) is transmitted through soil while rice mosaic virus (RMV) is so far associated with contact transmission alone.
How do you control rice tungro virus?
The most common effort to control Tungro virus is by spraying insecticides. Spraying insecticides can suppress the populations of the green leafhoppers which means it will reduce the speed of spreading the virus. Some known insecticides can be used to control green leafhoppers.
What are the symptoms of tungro?
Symptoms of tungro include orange yellow coloring of leaves, stunting, reduction in tiller number, and poor panicle emergence. Tungro affects some rice cultivars in all stages of growth; early infection reduces green matter and causes yield losses up to 68% (2).
What are the symptoms manifested in tungro disease of rice?
The characteristic symptoms of the tungro disease are yellowing of leaves and stunting. This study was attempted to understand the physiological and molecular processes responsible for causing these symptoms.
Which rice disease appears only after flowering?
Why and where it occurs False smut is visible only after panicle exsertion. It can infect the plant during flowering stage.
What is bacterial leaf blight of rice?
rice bacterial blight, also called bacterial blight of rice, deadly bacterial disease that is among the most destructive afflictions of cultivated rice (Oryza sativa and O. glaberrima). In severe epidemics, crop loss may be as high as 75 percent, and millions of hectares of rice are infected annually.
What is the effect of rice tungro virus?
Rice tungro disease is caused by the combination of two viruses, which are transmitted by leafhoppers. It causes leaf discoloration, stunted growth, reduced tiller numbers and sterile or partly filled grains.
What causes rice tungro disease?
Tungro virus disease is transmitted by leafhoppers, wherein the most efficient vector is the green leafhopper, Nephotettix virescens (Distant). The disease complex is associated with rice tungro baciliform virus (RTBV) and rice tungro spherical virus (RTSV).
What is the meaning of Tungro?
Tungro means ‘degenerated growth’ in a Filipino dialect and the virus was first observed in the Philippines 1975.
What are the common diseases of rice?
5 Major diseases of Rice (Oryza sativa)
- Rice Blast.
- Brown Spot of Rice.
- Sheath blight of Rice.
- Bacterial leaf blight.
- Sheath rot of Rice.
What is the meaning of tungro?
Which rice tungro virus is responsible for induction of Majority of symptoms?
In rice tungro, RTBV induces most of the symptoms (yellowing and reddening of the leaves, stunting of rice plants) and RTSV is mainly involved in the transmission of both viruses via the green leafhopper Nephotettix virescens (5).