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RESULTS

(9)

DISEASE: Bacterial canker and blast

HOST: Apricot

Apricot with typical reddish brown-discolored tissues beneath the bark and gumming around infected areas.

DISEASE: Bacterial canker and blast

HOST: Apricot

Young infected twig with droplets of bacterial ooze on stem.

DISEASE: Bacterial canker and blast

HOST: Apricot

Bacterial canker has many symptoms. Typical symptoms are brown, sometimes reddish brown, internal tissues and rough, cracked bark.

DISEASE: Bacterial canker and blast

HOST: Apricot

Infected apricot with sparse foliage (some twigs with no foliage) and a discolored area exposed where bark was removed.

DISEASE: Bacterial canker and blast

HOST: Apricot

Fruit spot phase with numerous reddish necrotic spots.

DISEASE: Head rot (Jelly rot)

HOST: Lettuce

Sliced head of lettuce. Typical symptoms are a translucent appearance and browning or jelly rot of the stalk (crown).

DISEASE: Head rot (Jelly rot)

HOST: Lettuce

Advanced stage of lettuce stalk rot (crown).

DISEASE: Head rot (Jelly rot)

HOST: Lettuce

Head rot of lettuce first appears as rapid wilt of outer wrapper leaves. Wilt is caused by collapse of vascular tissues, which develop a pinkish to brown discoloration.

DISEASE: Syringae leaf spot

HOST: Tomato

Leaves with brown necrotic lesions and chlorotic margins. Symptoms vary greatly among cultivars. Some have black or brown lesions with bright yellow, chlorotic areas and others do not have yellowing.