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Plant Diseases > Fungi Identification - > Flashcards

Fungi Identification - Flashcards

1
Q

Rhizopus rot strawberries

A

Rhizopus stolonifer

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2
Q

Rot of Peach

A

Rhizopus stolonifer

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3
Q

Wet rot of squash

A

Choanephora cucurbitarum

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4
Q

Pythium

A

Seed & seedling

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5
Q

Phytopthora

A

Seed & seedling

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6
Q

Gray Leaf Spot of Corn

A

Cercospora

Symptoms: long - rectangular, well-defined

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7
Q

Frogeye leaf spot of soybeans

A

Cercorspora

Symptoms: eyespots

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8
Q

Southern Rust of Corn

A

Orange, big

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9
Q

Wheat Stripe rust

A

Puccinia striform
yellow leaf stripe
Arranged in stripes

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10
Q

Northern corn leaf blight

A

Cigar lesions

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11
Q

Southern Corn leaf blight

A

Small lesions

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12
Q

Fusarium head blight or Fusium head scab of wheat

A

discolored half of the head

Produces vomitoxin

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13
Q

Sudden death syndrome

A

Yellow surrounding lesions

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14
Q

Septoria leaf blight

A

Small brown spots on leaves

Produces Pyendium - filled w/ asexual spores/conidia

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15
Q

Brown Stem rot

A

Stem - brown; looks like SDS

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16
Q

Fusarium stalk rot

A

Bottom - mycelium

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17
Q

Fusarium ear rot

A

Indicidual Kernels

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18
Q

Penicillium ear rot

A

Green/dark mold at top

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19
Q

Gray mold

A

Botrytis spp.

Post Harvest Diseases

20
Q

Penicillium decay

A

Penicillium spp.

Post Harvest Diseases

21
Q

Alternaria decay

A

Alternaria spp.

Post Harvest Diseases

22
Q

Brown Rot

A

Moniliania fructicola

Post Harvest Diseases

23
Q

Aspergillus rot

A

Aspergillus spp.

Post Harvest Diseases

24
Q

Anthracnose Colletotrichum

A

Colletotrichum spp.

Post Harvest Diseases

25
Q

Wheat Leaf Rust

A

Puccinia Triticinia

Small circular to oval shaped orange/red pustules leaf sheath to tip

26
Q

Wheat Stem Rust

A

Puccinia gramminis fsp Triticinia

yellow to yellowish red or reddish pustules on leaves, sheath & stems

27
Q

Tan Spot of Wheat

A

Pyrenophra trici - reprentis

Symptoms: tan lesions w/ yellow margin

28
Q

Loose Smut of Wheat

A

Black powdery appearance of head

29
Q

Ergot

A

Ergot sclerotia in wheat infloresence & mixed with Kernels

30
Q

Cotton Rot

A

Cruciform branching of fungus hyphae

31
Q

Apple Scab

A

Leaves and fruit
infects foliage
sexual reproduction

32
Q

Soybean Downy mildew

A

on bottom on leaf

yellow spots on top

33
Q

Corn Downy mildew

A

Crazy top

  • by sclerophtera macrosprora
  • shows up at tassel stage
34
Q

Rose Powdery mildew

A

-

35
Q

Powdery mildew of Grape

A

foliage of grape

36
Q

Powdery mildew of wheat

A

-

37
Q

Powdery mildew of tomato

A

-

38
Q

Gibberella Stalk Rot

A

Most common stalk rot in Corn Belt

  • Pinkish red discoloration inside the stalk
  • Black fruiting bodies on the outside - Perithecia
39
Q

Diplodia stalk rot

A
  • Dark Brown/Black pycindia

- Two celled conidia

40
Q

Fusarium Stalk Rot

A
  • White Fungal growth on the outside of stalk

- Pink discoloration on inside of stalk

41
Q

Anthracnose Stalk Rot

A

Big black spots on stalk surface = fungal acerculli

42
Q

Gibberella Ear Rot

A

Red or Pink color mold

always starts at the ear tip and progresses to base

43
Q

Diploidia ear rot

A

Presence of white mycelium of the fungus growing between the kernels;
visually starts at base

44
Q

Fusarium Ear Rot

A

Presence of white, pink, salmon colored mycelium
usually scattered throughout ear or localized on injured kernels
infectedkernels may turn tan or brown

45
Q

Pencilium ear Rot

A

Dark-Blue-green mold at ear tip

46
Q

Aspergillius Ear Rot

A

Olive or yellow green mold growtn between kernels

Anywhere on ear

Plant Diseases (3 decks)

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