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RESULTS

(10)

DISEASE: Pink disease

HOST: Pineapple

Infected pineapple slices; effect of heating (right) and not heating (left).

DISEASE: Pink disease

HOST: Pineapple

Two clones (A and D) showing different stages of infection. Second and fourth fruits (left to right) have been heated. Disease originally attributed to Gluconobacter oxydans and Enterobacter agglomerans and later to Pantoea citrea.

DISEASE: Ratoon stunt

HOST: Sugarcane

Necrotic, reddish vascular bundles in node of sliced stalk, a diagnostic symptom.

DISEASE: Ratoon stunt

HOST: Sugarcane

Disease of susceptible cultivar L62-96 (right). External symptoms are characterized by stunting and poor growth.

DISEASE: Ratoon stunt

HOST: Sugarcane

Red discoloration just below nodal tissues is a symptom in mature stalks of 'L41-233'.

DISEASE: Ratoon stunt

HOST: Sugarcane

Row of disease 'Trojan' plants (left). Healthy row (right).

DISEASE: X-disease (Western X) or buckskin

HOST: Cherry

Comparison of normal, dark cherries (in hand) with infected, immature cherries with less pigmentation.

DISEASE: X-disease (Western X) or buckskin

HOST: Cherry

Healthy cherry shoot (left) and stunted shoot (right).

DISEASE: X-disease (Western X) or buckskin

HOST: Cherry

Infected trees on 'Mazzard' rootstock (right) may live for years, producing fruit with symptoms. Trees on 'Mahaleb' rootstock (left) usually die rapidly in year of infection, about time of fruit ripening.