Response of Six Turf Species to Cadmium Stress: Displaying the Most Tolerant Cultivar
Fard Kamal Gholamipour1, Zakizadeh Hedayat1, Ghasemnezhad Mahmood1,*, Kafi Mohsen2, Rejali Farhad
1Assistant Professor and Associate Professor of Faculty of, Agricultural Sciences, University of Guilan, Rasht, Iran
2Professor of, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
3Assistant Professor of, Soil and Water Research Institute, Karaj, Iran
*Corresponding author: Mahmood Ghasemnezhad, PhD student, Assistant Professor and Associate Professor of Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran, Tel: 0912-6617455, E-mail: Ghasemnezhad@Guilan.ac.ir
This study was accomplished to monitorthe interspecific differences in response to cadmium (Cd) stress among six turfgrass species through investigating the seed germination, seedling growth and some biochemical characteristics. After an environmentally controlled experiment under different Cd treatments (0, 100, 200 and 300 |jM), Agropyron elongatum showed the highest germination percentage (80.33%) under 300 |jM Cd, followed by Lollium perenne with 72.59%. The lowest germination parameters including germination vigor, index and percentage were found in Festuca ovina, which referred as the more sensitive species to Cd than other studied turfgrasses. The highest shoot growth followed by the lowest chlorophyll degradation was observed in Agropyron elongatum, Festuca rubra and Lolium perenne respectively. Furthermore, the low chlorophyll degradation and the high seedling growth in turf species were correlated with increasing in some antioxidant enzymes activities. It might display the crucial indirect effect of Cd, that is, oxidative stress. Overall, Agropyron elongatum is introduced as the most tolerant cool-season turfgrass among studied species, which could be considered for engaging in advanced studies of heavy metal stresses.