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Diseases of Crops > CLRDV > Flashcards

CLRDV Flashcards

1
Q

Is the cotton leafroll dwarf virus in MS?

A

Yes

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2
Q

When and where was cotton blue disease first discovered?

A

Central Africa (1949)

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3
Q

How is cotton blue disease transported?

A

Aphis gossypil

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4
Q

When and where was Vein Mosaic virus discovered?

A

Brazil (1938)

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5
Q

Does no sap transmission mean the disease cannot be mechanically transmitted?

A

Yes

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6
Q

Is Vein Mosaic Virus in Thailand?

A

Yes

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7
Q

What is the new name for cotton blue disease and vein mosaic virus?

A

Cotton Leafroll Dwarf Virus

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8
Q

What shape is the CLRDV?

A

Circular

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9
Q

How is CLRDV transmitted?

A

Aphids

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10
Q

When was CLRDV first discovered in AL?

A

2017-2018

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11
Q

Is CLRDV seed transmissible?

A

No

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12
Q

What are the two main symptoms of CLRDV?

A

Stunting due to shortening internodes, rolling of the leaves

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13
Q

Approximately how many counties has CLRDV in MS?

A

51

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14
Q

What are two other hosts of CLRDV in MS?

A

Pigweed and Okra

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15
Q

What are three future hosts of CLRDV in MS?

A

Henbit
Clover
Perennial peanut

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16
Q

Where did CLRDV in USA come from?

A

Latin America

17
Q

How is CLRDV transmitted in Aphids?

A

Persistent transmitted

18
Q

Is CLRDV worse in USA or Brazil?

A

Brazil

19
Q

What is the Genus of CLRDV?

A

Polerovirus

20
Q

Is CLRDV persistently transmitted in aphids?

A

Yes

21
Q

What is the goal of research in MS in regard to CLRDV?

A

Testing germplasm for resistance to CLRDV

22
Q

How many samples tested positive in MS in 2020 for CLRDV?

A

37 (10.5%)

23
Q

How many isolates of CLRDV have been found in MS? In AR?

A

MS - 28

AR - 2

24
Q

Which 8 states have CLRDV?

A

TX, OK, AR, MS, AL, GA, FL, SC

25
Q

How is CLRDV transmitted?

A

Cotton Aphid

26
Q

Is the USA strain of CLRDV distinct from the one reported in South America?

A

Yes.

Diseases of Crops (11 decks)

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