| Publication Type | J |
| Authors | Wang, S. and Q. Zhang |
| Title | Responses of Creeping Bentgrass to Salt Stress during In Vitro Germination |
| Source | Hortscience |
| Abstract | Many golf courses and turfgrass managers use recycled water, which contains high salts, as part or a sole irrigation source to lower costs and comply with governmental restrictions on water use. High salinity negatively affects turfgrass performance. Using salt-tolerant species or cultivars is one the most effective methods to address salinity problems. Twenty-six commercially available creeping bentgrass (Agrostis stolonifera) cultivars were evaluated for salt tolerance during in vitro germination on 1% agar media supplemented with NaCl at 0, 5, 10, 15, or 20 g.L(-1)) at 25/15 degrees C (day/night) under fluorescent light (36 mu mol.s(-1.)m(-2)) with an 8- to 16-h photoperiod. Significant variations in salinity tolerance were observed among the cultivars. Final germination rate (FGR, %) and daily germination rate (DGR, %/d) decreased linearly or quadratically as salinity levels increased. 'Declaration', 'Seaside II, `T-1', and 'Bengal' were the most salt-tolerant, requiring salt levels at or greater than 16.0 and 10.0 g.L(-1), respectively, to reduce FGR and DC R by 50%. In contrast, `Tyee', 'Kingpin', and 'SR1150' required average salinity levels of 11.6 and 6.5 0,-1 to cause 50% reduction in FCR and DGR, respectively, showing that they were the least salt-tolerant cultivars. The largest difference between FGR (1.9%) and DGR (26.2%) reduction under saline conditions was observed at 5 indicating that DGR was more sensitive to salinity changes than FGR. Therefore, DGR might be a more reliable method to be used for salt selection. |
| Author Address | [Wang, Sheng; Zhang, Qi] N Dakota State Univ, Dept Plant Sci, Fargo, ND 58108 USA. Zhang, Q (reprint author), N Dakota State Univ, Dept Plant Sci, POB 6050, Fargo, ND 58108 USA. qi.zhang.1@ndsu.edu |
| ISSN | 0018-5345 |
| ISBN | 0018-5345 |
| Publication Date | Nov |
| Year Published | 2010 |
| Volume | 45 |
| Issue | 11 |
| Beginning Page | 1747-1750 |
| Unique Article Identifier | WOS:000284196300031 |
