PJB-2018-587
Influence of Nano-silica on physiological characteristics of Bermuda grass (Cynodon dactylon L.) under salinity stress
Mohsen Kafi
Abstract
Salinity stress prevents the growth and development of plants. This study was conducted to evaluate growth and physiological responses of the Bermuda grass (Condon dactylon L.) to nano-silica (N-Si) in salinity condition. A factorial experiment was arranged based on a randomized complete block design with three replications. The treatments included: NaCl at levels of 0, 5, 7 and 9 dS m-1 and N-Si concentration of 0, 1, 2 and 3 mM. After application of N-Si and NaCl to the growth medium, plants were allowed to grow for 180 days. The results showed that salinity had deleterious effects on the growth of grass plants. Salinity levels diminished chlorophyll content, but in contrast, proline content, MDA (malondialdehyde), and the activities of CAT (catalase) and superoxide dismutase (SOD) increased by increasing salinity levels. However, exogenous application of N-Si alleviated the adverse effect of salinity stress on the chlorophyll, MDA and proline contents. This study suggested that utilization nano-Si (3 mol L-1) had been beneficial in improving salt tolerance of the Bermuda grass on saline lands.
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