| Autor: |
Stefanov, Martin A., Rashkov, Georgi D., Yotsova, Ekaterina K., Borisova, Preslava B., Dobrikova, Anelia G., Apostolova, Emilia L. |
| Předmět: |
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| Zdroj: |
Ecologia Balkanica; 2020 Special Issue, p147-154, 8p |
| Abstrakt: |
In this study, the effects of salt stress on the photosynthetic processes in sorghum (Sorghum bicolor L. Albanus concep) and maize (Zea mays L. Mayflower) were compared. The plants were grown in half-strength Hoagland solutions containing different NaCl concentrations (0, 50, 150 and 250 mM NaCl) for 6 days. Pulse Amplitude Modulated chlorophyll fluorescence, photooxidation of P700 and pigment analysis were used for characterization of the salinity effects on the studied plants. The treatment of plants with the high concentrations of NaCl led to an inhibition of the chlorophyll fluorescence parameters like the photochemical quenching, the rate of photosynthesis and the linear electron transport in sorghum and maize. All these changes corresponded to decrease in the pigment content and changes in chlorophyll a/b ratio. The analysis of the P700 photooxidation revealed that the photosystem I photochemistry was inhibited at the highest NaCl concentration in both studied plants. Data also revealed that sorghum is more sensitive to salt stress than maize. The reasons for different effects of salt stress on the maize and sorghum are described. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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