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Kenneth B. Marcum and Mohammad Pessarakli

. Of these, perennial and intermediate ryegrasses are generally used in modern turf landscapes as a result of their higher quality ( Turgeon, 2005 ). Perennial ryegrass has been ranked moderate in salinity tolerance, tolerating soil ECe (saturated paste

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Y.L. Qian, J.M. Fu, S.J. Wilhelm, D. Christensen, and A.J. Koski

classified as a halophyte ( O'Leary and Glenn, 1994 ), saltgrass genotypes differ in their salinity tolerance. Marcum et al. (2005) evaluated the relative salt tolerance of 21 desert saltgrass accessions and found a great range of salinity tolerance among

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Joseph G. Robins, B. Shaun Bushman, Blair L. Waldron, and Paul G. Johnson

with sufficient salinity tolerance ( Alshammary et al., 2004 ). Additionally, large areas of the world are characterized by soils with high levels of salt. Oldeman et al. (1991) estimated that ≈80 M ha of arable soil is salt-affected worldwide. Thus

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Chenping Xu and Beiquan Mou

were to screen lettuce germplasm and cultivars for their salinity tolerance in comparison with plants grown under control conditions, and identify traits related to salt tolerance. Materials and Methods Plant materials. Based on preliminary tests, 178

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Kenneth B. Marcum, Mohammad Pessarakli, and David M. Kopec

Relative salinity tolerance of 21 desert saltgrass accessions (Distichlis spicata [L.] Greene var. stricta (Torr.) Beetle), and one hybrid bermudagrass `Midiron' (Cynodon dactylon [L.] Pers. var. dactylon × C. transvaalensis Burtt-Davy `Midiron') were determined via solution culture in a controlled-environment greenhouse. Salinity in treatment tanks was gradually raised, and grasses progressively exposed to 0.2, 0.4, 0.6, 0.8, and 1.0 m total salinity in sequence. Grasses were held at each salinity level for 1 week, followed by determination of relative salinity injury. Relative (to control) live green shoot weight (SW), relative root weight (RW), and % canopy green leaf area (GLA) were highly correlated with one-another (all r values >0.7), being mutually effective indicators of relative salinity tolerance. The range of salinity tolerance among desert saltgrass accessions was substantial, though all were more tolerant than bermudagrass. Accessions A77, A48, and A55 suffered little visual shoot injury, and continued shoot and root growth at a low level, when exposed up to 1.0 m (71,625 mg·L–1); sea water is about 35,000 mg·L–1), and therefore can be considered halophytes.

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Qi Zhang, Sheng Wang, and Kevin Rue

. distans ) with rapid blight ( Labyrinthula spp.) tolerance ( Peterson et al., 2005 ). Salinity tolerance of these new cultivars needs to be evaluated. Various germination media have been used to evaluate relative salinity tolerance in turfgrasses during

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Manuel Chavarria, Benjamin Wherley, James Thomas, Ambika Chandra, and Paul Raymer

species in tropical and subtropical regions ( Uddin and Juraimi, 2013 ). However, there have been limited published studies focused on evaluating comparative salinity tolerance and recovery attributes among many of the currently used cultivars of these

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James P. Syvertsen, Juan C. Melgar, and Francisco García-Sánchez

) and trees ( Levy and Syvertsen, 2004 ), attempts to improve the salt tolerance of plants have met with very limited success. Progress in improving salinity tolerance will come through an understanding of processes controlling the uptake and transport

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Qi Zhang and Kevin Rue

lacking. The objectives of this study were to compare the effects of osmotic stress and ionic stress on seed germination and seedling growth in four cool-season turfgrass species and determine if GB seed priming enhances both osmotic and salinity tolerance

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Iryna Andrenko, Thayne Montague, Cynthia McKenney, and Russell Plowman

; Yensen and Biel, 2006 ). In fact, a combination of salinity tolerance mechanisms has been used by many plant species ( Deeter, 2002 ). In addition, a wide range of salt tolerance among landscape plant species, and even cultivars within the same species