What is tundu disease of wheat?
What is tundu disease of wheat?
The tundu disease or yellow ear rot disease of wheat is caused due to infection of a bacterial pathogen known as Clavibacter tritici in association with a nematode named Anguina tritici. The bacteria show positive results to gram staining and hence are gram-positive bacteria, spherical, and possess a capsule.
Which disease of wheat is found frequently in association with tundu disease of wheat?
Experiments have shown that the nematodes, Anguina tritici, responsible for transforming the developing grains in wheat ears to galls(popularly called ‘gegle’ and ‘mamni’) or ear cockle disease is associated with the bacterium in causing the rot. 1.
What are the major disease of wheat?
| Fungal diseases | |
|---|---|
| Foot rot = dryland foot rot | Fusarium spp. |
| Halo spot | Pseudoseptoria donacis Selenophoma donacis |
| Karnal bunt = partial bunt | Tilletia indica Neovossia indica |
| Leaf rust = brown rust | Puccinia triticina syn. Puccinia recondita f.sp. tritici Puccinia tritici-duri |
What is Molya disease?
2) Cereal cyst nematode causes “Molya disease” in wheat and barley. Second stage juvenile (J2) is the infective stage which enters inside the plant and start feeding on permanent feeding site known as “Syncytium” which acts as a metabolic sink.
Which of the following is the causal organism of tundu disease of wheat?
Causal Organism of Tundu Disease: Tundu disease of wheat is caused by Clavibacter (= Corynebacterium) tritici which belong to actinomycetes group of bacteria. The bacterium is rod-shaped, motile with one polar flagellum, Gram- positive, and measures 2-3 x 1.0 micron.
What causes white rust of crucifers?
White rust is caused by a fungus that overwinters in midwestern soils as thick-walled, weather-resistant spores. The overwintering spores germinate in the spring and infect young seedlings. As disease development progresses, the pathogen produces other spores in pustules on the under surface of leaves.
What causes wheat disease?
The virus that causes wheat streak mosaic survives in volunteer wheat and is spread by wheat curl mites. The disease is often most severe in areas of a field that are closest to these sources of the disease and mites.
How is wheat disease treated?
Broad fungicide seed treatments are commonly used on commercial wheat seed. Fungicidde seed treatments can provide protection from certain seed and soilborne pathogens when limited management options are available. Such diseases may include smuts, bunts, root rots, damping-off, tage-all and general seed rot.
How do you control powdery mildew in wheat?
Incorporating wheat residues into the soil, destroying volunteer wheat and crop rotation will reduce the amount of overwintering inoculum in the field. Fungicides are available that provide excellent control of powdery mildew.
What causes black point in wheat?
Black point is a disease that affects wheat and barley; it is most important on durum wheat. It is caused by several common fungi. These fungi are most troublesome when the relative humidity exceeds 90%. Expanding green kernels are most susceptible, while premature seed senescence also promotes black point.
Which disease is known as white blister of crucifers?
Races of Albugo can affect most brassica and crucifer plants. The disease creates white blisters and swellings on leaves and heads of affected plants and can devastate infected crops, with up to 100 per cent losses being reported.
Which fungus is cause of white rust disease?
White rust is a disease in plants caused by the oomycete Albugo candida or one of its close relatives. Plants susceptible to this disease generally include members of the Brassica family.
