Influența tratării pomilor de prun cu sba reglalg și microelemente asupra activității aparatului fotosintetic, peroxidazei și catalazei

Vegetative growth and photosynthesis are the mainstaies of plant vitality, productivity and resilience. Over the course of four years, during the vegetation period, the functionality of the photosynthetic apparatus and the activity of the enzymes peroxidase, polyphenoloxidase and catalase were determined in ontogeny in the leaves of four late varieties of plum. Resulting from the average activity of the enzymes investigated in part, we obtained that it changed differently depending on the environmental conditions, high temperatures, genotype, tree treatments, as well as the differentiated role of each enzyme in the metabolic processes that took place in certain phenophases in the leaves of plum trees of the researched varieties. In all varieties, there were higher values in the version treated with SBA Reglalg and microelements Br, Zn, Mn and Mo. The President variety had higher peroxidase values, Stanley and President varieties of polyphenoloxidase, and Stanley variety of catalase.