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RESULTS

(39)

DISEASE: Bacterial spot

HOST: Tomato

Ripe fruit with dark brown spots. The bacterial spot xanthomonads are Xanthomonas euvesicatoria, X. vesicatoria, X. perforans, and X. gardneri. X. perforans is not known to infect fruit.

DISEASE: Bacterial stem rot

HOST: Tomato

Stem with long necrotic lesions. The pathogen often enters plants following pruning injuries.

DISEASE: Bacterial stem rot

HOST: Tomato

Wilt is first symptom of disease. Later, the pith usually disintegrates, causing hollow and blackened stems.

DISEASE: Bacterial wilt

HOST: Tomato

Severely infected plants in glass house. First symptoms appear as wilt of young leaves. Leaf epinasty may occur.

DISEASE: Bacterial wilt

HOST: Tomato

Necrotic, brownish, cortical tissues. Massive infection of cortex may result in water-soaked lesions on stem surfaces.

DISEASE: Pith necrosis

HOST: Tomato

Cracked, dry, hollow stems with internal necrosis.

DISEASE: Pith necrosis

HOST: Tomato

External necrotic stem tissues. Initial symptoms include chlorosis of young leaves. Wilting may occur when disease is severe.

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.

DISEASE: Tomato big bud

HOST: Tomato

Characteristic symptoms are swollen, apical stems and stunted leaves. Apical stems are generally thickened and assume a stiff and erect growth habit. Internodes are shortened and flower buds are greatly enlarged.