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RESULTS

(59)

DISEASE: Bacterial leaf spot of chard

HOST: Chard

Chard leaves with necrotic spots.

DISEASE: Bacterial leaf spot of chard

HOST: Chard

Chard with necrotic, irregular leaf spots.

DISEASE: Bacterial wilt

HOST: Alfalfa

Longitudinal section of defined brown gum pockets on inner surface of root bark.

DISEASE: Bacterial wilt

HOST: Alfalfa

Infected plant (left) with typical symptoms of stunting and chlorosis. Other characteristic symptoms are spindly stems and small distorted leaflets. Healthy plant (right).

DISEASE: Bacterial wilt

HOST: Alfalfa

Diseased plant with chlorotic leaves.

DISEASE: Bacterial wilt

HOST: Alfalfa

Cross sections of diseased roots with defined brown gum pockets on inner surface of bark. Healthy root (upper left). Other sections represent increases in disease severity.

DISEASE: Bacterial wilt

HOST: Anthurium

Wilted anthurium with necrotic petiole, and leaf with necrosis and discoloration.

DISEASE: Bacterial wilt

HOST: Anthurium

Pale yellow area on leaf, a symptom of bacterial wilt.

DISEASE: Bacterial wilt

HOST: Bean

Bean leaf with white pustules following inoculation. Stem inoculation causes veinal yellowing and necrosis of leaves. Infected seed may be purple or yellow.