MORPHO-ANATOMICAL MODIFICATIONS PRODUSED BY MYMYCOSPHAERELLA FRAGARIE (TUL.) LINDAU ON FRAGARIA ANANASSA LEAVES (WESTON) DECANE. ET NAUDIN

Simeanu C. G., Simeanu Camelia-Ecaterina

SUMARY

The paper presents the comparative results regarding the morphology and anatomy of the Fragaria ananassa leaves both attacked and unattacked by Mycosphaerella fragarie. The leaves attacked by the parasite present circular spots on yhe leafts, and spots on the petiole.Through cross-cut section the unattacked leaflets are bifacial, and the attacked ones lose their structure as the attack goes forward. The attacked zones of the petiole highly modify their structure as compared to the unattacked zones, that is the steles modify their position and number.