DIURNAL DYNAMICS OF SOME PHYSIOLOGICAL PROCESSES IN TOMATO PLANTS ATTACKED BY THE BOTRYTIS CINEREA PERS.
I. Nicolae
At the tomato plants attacked by the Botrytis cinerea Pers. one can observe 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, is similar to that in healthy plants but presents specific variations of the pathogen. One can also observe the rise of respiration as a result of the intensification of the activity of the respiratory enzymes, the decrease of the total water contents determines the withering and premature drying of the plants, the decrease of the contents in chlorophyllian pigments because of the intensification of the chlorophylases and the deterioration of the chloroplasts and the modification of the contents in mineral substances.