RESEARCH REGARDING SOME PHYSIOLOGICAL MODIFICATIONS PRODUCED BY THE CLADOSPORIUM FULVUM COOKE FUNGUS
AT THE HOT HOUSE TOMATOES PLANTS
Ion Nicolae
KEY WORDS: pathogenic agent, healthy plants, attacked plants, tomatoes plants
The research regarding several physiological modifications caused by the Cladosporium fulvum Cooke fungus was conducted in tomatoes plants cultivated in hot house.
In connection with the climatic conditions, on the attacked tomatoes plants, one can observe the diminution of the photosynthesis, of the total water content and of the chlorophyll content.
One can also observe the rise of the transpiration and respiration. The contents in mineral substances increases as a result of the intensification of the catabolism. The diurnal dynamics of the photosynthesis and of transpiration presents a minimum in the morning, a maximum after lunch and a minimum toward the evening, with specific variations in the plants attacked by the pathogen.