| plantsdb

RESULTS

(18)

DISEASE: Aster yellows

HOST: Barley

Infection by this phytoplasm causes twisted awns and sterile florets.

DISEASE: Aster yellows

HOST: Barley

Small necrotic spots on lower leaves and red coalescing streaks on upper leaves.

DISEASE: Aster yellows

HOST: Squash

Diagnostic characteristics for the disease are yellowing of young leaves, proliferation of secondary shoots, and rigid erect habit. Leaves are misshapen and smaller than normal and have stiff, thick laminae.

DISEASE: Bacterial kernel blight (Leaf blight)

HOST: Barley

Dark, brown discolored kernels at the embryo end and posterior surface.

DISEASE: Bacterial leaf blight

HOST: Barley

Diseased barley plants with typical bleaching of flag leaves. Initial symptoms are water-soaked lesions that later coalesce. Eventually, the entire leaf becomes necrotic and edges roll inward.

DISEASE: Bacterial leaf blight

HOST: Sorghum

The disease begins with interveinal water-soaked streaks that broaden into irregularly shaped areas with necrotic centers and red margins.

DISEASE: Bacterial leaf spot

HOST: Sorghum

Leaf with red and necrotic streaks along veins.

DISEASE: Bacterial leaf spot

HOST: Sorghum

Clustering of small purplish lesions in localized region of leaf.

DISEASE: Bacterial leaf streak

HOST: Sorghum

Symptoms typically begin as water-soaked streaks expanding into irregular-shaped, reddish brown streaks. Symptoms are similar to bacterial leaf stripe.