Published in Scientific Papers. Series B, Horticulture, Vol. LXVII, Issue 1
Written by Elena DELIAN, Elena SĂVULESCU
The ontogenetic cycle of the plant involves going through the phases of seeds, seedlings, juvenile, maturity, and senescence. Leaves senescence of woody plants represents a physiological phase of transition from the nutrient’s assimilation to their remobilization to different plant’ organs, to ensure the survival of the species and its growth in the following year. The purpose of the present study was to quantify the leaves gas exchanges (photosynthesis rate, transpiration rate, stomatal conductance, and intercellular carbon dioxide content) and to estimate their chlorophyll content, during the autumn senescence, in some deciduous tree species (belonging to 16 different families), grown in the Botanical Garden of the University of Agronomic Sciences and Veterinary Medicine of Bucharest. The obtained data can be added to those already existing, to better understand the plants behaviour during leaves senescence.
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