Özet:

Salt is a major abiotic stress factor that is seen in more than 20% of the water-water land areas in the world and is a threat to dry and semi-dry land areas. In this study, the effects of 0-control, 50, 100, 150, 200 and 250 mM NaCl salt intensities were studied on the compound spine (Arundo donax L.) The first dose of water is 250 mM, starting with 50 mM salt concentration. The reactions of the curvature to stress were observed in the early development period of the plant. In the study, the index of leaf damage, plant age and dry weight, root age and dry weight, the number of leafs and area, plant length, rubber thickness, leaf water potential content, chlorophyll value and sodium (Na), potassium (K) and calcium (Ca) content were determined. The compound has shown a wide variation in terms of tolerance to different salt concentrations. With increased salt concentrations there have been declines in the form of morphological properties in the plant, this effect showed its effect especially with the salt concentration of 100 mM and the lowest values were obtained in the dose of 250 mM. The highest leaf damage index (0-5 scales) values are obtained at a concentration of 250 mM. According to the control groups, leaves age and dry weights were reduced by 27% and 60% respectively, and root age and dry weights by 13% and 77% respectively. The leaf proportional water content is 85% in control plants, while this value is 52.5% in 250 mM concentrations. As a result of increased salt stress, there is a decrease in chlorophyll content and potassium (K) and calcium (Ca) ions, while the increase in sodium (Na) ions. According to the results obtained from the study, high salty has affected the growth and development of the plant negatively, and the 150 mM NaCl concentration is a critical dose on the development of the plant.

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