Abstract
The Puerto Pican type of tomato Big Bud disease is similar to that reported from Australia. The main difference in symptomatology lies in the absence of a pronounced bladder-like hypertrophy of the calyx of virus invaded flowers. Other slight differences between the Puerto Rican and Australian type of Big Bud could be possibly due to: 1) the existence of two distinct strains of the virus. 2) the influence of local environment on symptom manifestation.
