PHYSIOLOGICAL RESEARCHES IN CORYLUS AVELLANA L. VAR. PURPUREA GROWN IN THE CLIMATIC CONDITIONS IN THE OLTENIA REGION

Researches regarding the intensity of some physiological processes were performed in the Corylus avellana L. var. purpurea grown in the climatic conditions in the Oltenia region. It is noticed that photosynthesis and transpiration intensity varies depending on climatic conditions, presenting lowvalues in the morning, high values until after noon and low values towards the evening, but results obtained at mature leaves are higher, in comparison with young leaves.The linear regressions performed between the physiological processes intensity and the photosynthetic active radiation, leaf temperature and stomatal conductance at Corylus avellana L. highlights a positive correlations with specifical variations in the young leaves and mature leaves. The chlorophyll content in mature leaves increases by 17.89 %, in comparison with young leaves, between the content of chlorophyll and the photosynthesis intensity being a good correlation. The mature leaves present a decrease of the total water content by 1.43 % and an increase of the dry substance content by 5.44 %, with implications in the processes of growth and development of the plants