title: Physiological Responses ofRosa rubiginosato Saline Environment.
abstract: The aim of this work was to analyse the response ofRosa rubiginosato salinity induced by different concentrations of sodium chloride and calcium chloride (0, 25, 50, 100, 150 and 200 mM). Besides salt accumulation and pH changes, other parameters were investigated including photosynthetic activity, leaf water content, the dynamics of necrosis and chlorosis appearance and leaf drying. The study was complemented with microscopic analysis of changes in leaf anatomy.R. rubiginosawas more sensitive to the salinity induced by calcium chloride than by sodium chloride. Plant response to salinity differed depending of the salt concentration. These differences were manifested by higher dynamics of necrosis and chlorosis appearance and leaf drying. CaCl2showed greater inhibition of the photosynthetic apparatus and photosynthetic activity. Treatment with CaCl2caused more visible deformation of palisade cells, reduction in their density and overall reduction in leaf thickness. The study demonstrated higher accumulation of CaCl2in the soil, and thus greater limitations in water availability resulting in reduced leaf water content and quicker drying of leaves as compared with NaCl-treated plants.
authors.affiliation: Polish Academy of Sciences, The Franciszek Górski Institute of Plant Physiology, Niezapominajek 21, 30-239 Kraków, Poland.
authors.forename: Tomasz
authors.initials: T
authors.lastname: Hura
authors.affiliation: Department of Ornamental Plants, Faculty of Biotechnology and Horticulture, University of Agriculture in Kraków, Al. 29 Listopada 54, 31-425 Kraków, Poland.
authors.forename: Bożena
authors.initials: B
authors.lastname: Szewczyk-Taranek
authors.affiliation: Department of Plant Physiology, Faculty of Agriculture and Economics, University of Agriculture in Kraków, Podłużna 3, 30-239 Kraków, Poland.
authors.forename: Katarzyna
authors.initials: K
authors.lastname: Hura
authors.affiliation: Department of Dendrology and Landscape Architecture, Faculty of Biotechnology and Horticulture, University of Agriculture in Kraków, Al. 29 Listopada 54, 31-425 Kraków, Poland.
authors.forename: Krzysztof
authors.initials: K
authors.lastname: Nowak
authors.affiliation: Department of Ornamental Plants, Faculty of Biotechnology and Horticulture, University of Agriculture in Kraków, Al. 29 Listopada 54, 31-425 Kraków, Poland.
authors.forename: Bożena
authors.initials: B
authors.lastname: Pawłowska
keywords: Chlorophyll fluorescence; Chlorosis; Leaf anatomy; Photosynthesis; Salinity