Impact of saline solution on growth and photosystem II during in vitro cultivation of Bromelia antiacantha (Bromeliaceae)

Abstract In vitro cultivation is a technique with wide application for micropropagation. However, each species has specific mineral needs this type of cultivation. The objective was to assess the impacts saline solution culture medium on performance photosynthetic apparatus and growth Bromelia antiacantha during in cultivation, thus elucidate mitigation nutritional imbalance that can interfere electron transport plants. Plants were cultivated salt concentration gradient MS (0%, 25%, 50%, 75% or 100%). traits fluorescence chlorophyll analyzed. Intermediate concentrations resulted plants larger number leaves longer root length. OJIP curves results JIP test showed grown without salts presented less efficient photosystem II (PSII), as indicated by index [Pi(total)]. contrast, intermediate (MS 25% 50%) had positive effect apparatus. be used B. antiacantha, enabling development suitable physiological qualities planting field.