Physiological and biochemical parameters of maize inbred and hybrid genotypes subjected to water deficit
Abstract
The selected physiological, biochemical, morphological and other parameters (the net photosynthetic rate (PN), the transpiration rate (E), the stomatal conductivity (gS), the water use efficiency, the maximum photosynthetic efficiency of Photosystem 2, the content of photosynthetic pigments, the plant height, the length of individual leaves, the weight and energy content of the aboveground and root biomass, etc.) were analyzed in 5 inbred lines of maize (Zea mays L.) and their 10 F1 hybrids subjected to ten days of water deficit at V4 developmental stage. The additional, more detailed analysis (including the analysis of the activities of selected enzymes of the Calvin or Hatch-Slack cycles, the activities of antioxidant enzymes or the content and ratios of individual photosynthetic pigments) was performed in hybrid combination 2023×CE704 selected from this genotypic set on the basis of differences between parental lines.