Cereal Rusts Flashcards

1
Q

What are cereal rusts

A

basidiomycetes

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2
Q

Stem rust scientific

A

Puccinia graminis

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3
Q

Stem rust hosts

A

wheat, barley, oats, rye

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4
Q

5 spore stages of stem rust

A
  1. Basiodiospores - form on wheat but need alternate host plant to continue
  2. Pycniospores
  3. Aeciospores - attack wheat once
  4. Urediospores - produces by aeciospores & have several life cycles
  5. Teliospores - end of season
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5
Q

Stem rust: Obligate parasite?

A

yes

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6
Q

How many hosts do some rust pathogens need to complete their life cycle?

A

two - barberry plant & wheat (stem rust)

- Meadow rue & wheat (leaf rust)

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7
Q

What type of rust spore is wind blown?

A

Urediospores

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8
Q

Control of stem rust

A
  1. resistant varieties
  2. control of barberry plant
  3. NOT crop rotation
  4. early seeding
  5. fungicides
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9
Q

Leaf rust scientific

A

Puccinia triticina

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10
Q

Alternate host for leaf rust

A

Meadow rue

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11
Q

Leaf rust life cycle

A

same as stem rust except different alternate host

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12
Q

Symptoms of leaf rust

A

circular pustules on upper side of leaves

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13
Q

Stripe rust scientific

A

Puccinia stiiformis

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14
Q

Stripe rust control

A
  1. early seeding
  2. resistant varieties - not known
  3. fungicides
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