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RESULTS

(6)

DISEASE: Carrot yellows

HOST: Carrot

Flowers with shoot proliferation (witches’-broom) (left). Healthy flower (right). Virescence and phyllody of flower parts are common.

DISEASE: Carrot yellows

HOST: Carrot

Carrot with proliferation of roots. Initial symptoms include yellowing and narrowing of veins of young leaves. The entire leaf later becomes necrotic.

DISEASE: Greening disease

HOST: Periwinkle

Healthy flower and infected flower.

DISEASE: Greening disease

HOST: Periwinkle

Diseased plants with phyllody and greenish yellow leaves.

DISEASE: Greening disease

HOST: Periwinkle

The disease causes virescence and phyllody, distorted and discolored leaves, and greening of flowers.

DISEASE: Strawberry lethal decline

HOST: Strawberry

Diseased plant with bronzing of older leaves and upward rolling or cupping of younger leaves. Leaves are chlorotic on upper surfaces and reddish or purplish on lower surfaces. In time, the entire plant dies.