Wheat Viruses Flashcards
Are wheat viruses important?
Yes, sometimes the single most reduction in yield is due to viruses in wheat.
When was Oat disease first reported?
1890
What are symptoms of oat disease? (2)
yellowing,
stunting
What does YDV stand for?
Yellow dwarf viruses
How are YDV transmitted?
Aphids
What is the host range of YDV?
cereal grains
What does BYDV stand for?
barley yellow dwarf virus
What is the most widely distributed virus of cereals in the world?
barley yellow dwarf virus
Where are the virons of barley yellow dwarf virus concentrated in the plant?
Phloem
What are symptoms of YDV? (2)
yellowing or reddening
plant stunting
What can change the symptoms of YDV?
Age of plant, location on plant, ???
How is BYDV transmitted?
by aphids after several hours of feeding and a four day latent period (persistent manner)
What does SBWMV stand for?
Soil-borne wheat mosaic virus
What is the vector of soil-borne wheat mosaic virus?
a fungus-like organism in the soil
What is a major symptom of soil-borne wheat mosaic virus?
Large patches in the field of infected plants, concentrated zones in the field
How is wheat mosaic virus transmitted?
Mites
How is high plains disease transmitted?
Mites
How is wheat streak mosaic virus transmitted?
Mites
What three viruses in wheat are transmitted by Mites?
Wheat mosaic virus,
High plains disease,
Wheat streak mosaic virus
What is the economic damage associated with wheat streak mosaic virus?
$80 million in Kansas in 2017
What chemical can be used on wheat streak mosaic virus?
None available currently
Do resistant varieties exist for wheat streak mosaic virus?
Yes
