Relative Salt Tolerance of Seven Texas Superstar® Perennials

Sun, Youping; Niu, Genhua; Perez, Christina

doi:10.21273/hortsci.50.10.1562

Cited by 27 publications

(62 citation statements)

References 14 publications

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“…2D). Similarly, Sun et al (2015) reported that the number of shoots of M. arboreus, S. leucantha, and V. ·hybrida decreased significantly when irrigated with saline solution at an EC of 10.0 dS · m -1 for 8 weeks, whereas the number of shoots of S. farinacea was not reduced. Although the number of shoots of T. scaposa tended to decrease with saline solution irrigation at an EC of 10.0 dS · m -1 for 5 weeks but still was not significant (Wu et al, 2016b).…”

Section: Resultsmentioning

confidence: 80%

“…Saline solution at an EC of 10.0 dS · m -1 decreased the SPAD readings of A. barnebyi and E. septentrionale by 17.7% and 6.2%, respectively. Similarly, Sun et al (2015) documented that the SPAD readings of M. arboreus, R. brittoniana, and V. ·hybrida did not change, but S. farinacea and S. leucantha decreased significantly when irrigated weekly with saline solution at an EC of 10.0 dS · m -1 for 8 weeks. In a study of rose rootstocks by Niu et al (2008), Rosa ·fortuniana had greater SPAD readings compared with R. ·multiflora and R. ·odorata when irrigated with saline solution at an EC of 6.0 dS · m -1 for 15 weeks.…”

Section: Resultsmentioning

confidence: 82%

“…Plant heights, the length of the longest shoot, were measured at the start and end of the experiment. A visual score of 0 to 5 was assigned to each plant where 0 = dead, 1 = severe foliar damage (>90% leaves with burn, necrosis, and discoloration), 2 = moderate foliar damage (90% to 50%), 3 = slight foliar damage (50% to 10%), 4 = minimal foliar damage (<10%), and 5 = excellent without foliar damage (Sun et al, 2015). Plant size was not considered while assigning the visual score.…”

Section: Methodsmentioning

confidence: 99%

“…Dudley Cross', 'Reve d'Or', and 'Sea Foam' roses were salt-tolerant when irrigated with saline water at an EC of 10.0 dS · m -1 (Cai et al, 2014). Sun et al (2015) reported that Texas Superstar Ò perennials such as Malvaviscus arboreus var. drummondii (Turk's cap), Ruellia brittoniana 'Katie Blue' ('Katie Blue' ruellia), Salvia farinacea 'Henry Duelberg' ('Henry Duelberg' salvia), and Verbena ·hybrida 'Blue princess' ('Blue Princess' verbena) were tolerant to salinity levels at ECs of 5.0 and 10.0 dS · m -1 , whereas Phlox paniculata 'John Fanick' ('John Fanick' phlox), Phlox paniculata 'Texas Pink' ('Texas Pink' phlox), and Salvia leucantha (Mexican bush sage) were sensitive to salinity levels at ECs of 5.0 and 10.0 dS · m -1 .…”

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confidence: 99%

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Salt Tolerance of Sego SupremeTM Plants

Paudel¹,

Chen²,

Sun³

et al. 2019

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Sego SupremeTM is a designated plant breeding and introduction program at the Utah State University Botanical Center and the Center for Water Efficient Landscaping. This plant selection program introduces native and adapted plants to the arid West for aesthetic landscaping and water conservation. The plants are evaluated for characteristics such as color, flowering, ease of propagation, market demand, disease/pest resistance, and drought tolerance. However, salt tolerance has not been considered during the evaluation processes. Four Sego SupremeTM plants [Aquilegia barnebyi (oil shale columbine), Clematis fruticosa (Mongolian gold clematis), Epilobium septentrionale (northern willowherb), and Tetraneuris acaulis var. arizonica (Arizona four-nerve daisy)] were evaluated for salt tolerance in a greenhouse. Uniform plants were irrigated weekly with a nutrient solution at an electrical conductivity (EC) of 1.25 dS·m−1 as control or a saline solution at an EC of 2.5, 5.0, 7.5, or 10.0 dS·m−1 for 8 weeks. After 8 weeks of irrigation, A. barnebyi irrigated with saline solution at an EC of 5.0 dS·m−1 had slight foliar salt damage with an average visual score of 3.7 (0 = dead; 5 = excellent), and more than 50% of the plants were dead when irrigated with saline solutions at an EC of 7.5 and 10.0 dS·m−1. However, C. fruticosa, E. septentrionale, and T. acaulis had no or minimal foliar salt damage with visual scores of 4.2, 4.1, and 4.3, respectively, when irrigated with saline solution at an EC of 10.0 dS·m−1. As the salinity levels of treatment solutions increased, plant height, leaf area, and shoot dry weight of C. fruticosa and T. acaulis decreased linearly; plant height of A. barnebyi and E. septentrionale also declined linearly, but their leaf area and shoot dry weight decreased quadratically. Compared with the control, the shoot dry weights of A. barnebyi, C. fruticosa, E. septentrionale, and T. acaulis decreased by 71.3%, 56.3%, 69.7%, and 48.1%, respectively, when irrigated with saline solution at an EC of 10.0 dS·m−1. Aquilegia barnebyi and C. fruticosa did not bloom during the experiment at all treatments. Elevated salinity reduced the number of flowers in E. septentrionale and T. acaulis. Elevated salinity also reduced the number of shoots in all four species. Among the four species, sodium (Na+) and chloride (Cl–) concentration increased the most in A. barnebyi by 53 and 48 times, respectively, when irrigated with saline solution at an EC of 10.0 dS·m−1. In this study, C. fruticosa and T. acaulis had minimal foliar salt damage and less reduction in shoot dry weight, indicating that they are more tolerant to salinity. Epilobium septentrionale was moderately tolerant to saline solution irrigation with less foliar damage, although it had more reduction in shoot dry weight. On the other hand, A. barnebyi was the least tolerant with severe foliar damage, more reduction in shoot dry weight, and a greater concentration of Na+ and Cl–.

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Section: Resultsmentioning

confidence: 80%

Section: Resultsmentioning

confidence: 82%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

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Salt Tolerance of Sego SupremeTM Plants

Paudel¹,

Chen²,

Sun³

et al. 2019

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“…Salinity tolerance varies among plant species, and selecting salt-tolerant plants and using them in landscapes can be sustainable. Salinity-tolerant plants are usually identified by manually irrigating plants with saline solutions (Liu et al, 2017;Sun et al, 2015). However, this protocol is time-consuming and only applicable to a limited number of plants.…”

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confidence: 99%

Comparing the Salt Tolerance of Three Landscape Plants Using a Near-continuous Gradient Dosing System

Chen

Wang

Paudel

et al. 2019

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Screening salinity-tolerant plants is usually time intensive and only applicable to a limited number of salinity levels. A near-continuous gradient dosing (NCGD) system allows researchers to evaluate a large number of plants for salinity tolerance with multiple treatments, more flexibility, and reduced efforts of irrigation. Rose of sharon (Hibiscus syriacus), ninebark (Physocarpus opulifolius), and japanese spirea (Spiraea japonica) were irrigated using an NCGD system with eight electrical conductivity (EC) levels ranging from 0.9 to 6.5 dS·m–1. At 11 weeks after irrigation was initiated, there were no significant differences among EC levels in terms of visual score, growth index [(Height + Width 1 + Width 2)/3], stem diameter, number of inflorescences, and shoot dry weight (DW) of rose of sharon. However, the root DW, relative chlorophyll content (SPAD), and net photosynthesis rate (Pn) of rose of sharon decreased linearly as EC levels increased. Ninebark and japanese spirea had increased foliar salt damage with increasing EC levels. The growth index, stem diameter, number of inflorescences, shoot and root DW, SPAD, and Pn of ninebark decreased linearly as EC levels increased. The growth index and SPAD of japanese spirea decreased quadratically with increasing EC levels, but its stem diameter, number of inflorescences, shoot and root DW, and Pn decreased linearly with increasing EC levels. The salinity threshold (50% loss of shoot DW) was 5.4 and 4.6 dS·m–1, respectively, for ninebark and japanese spirea. We were not able to define the salinity threshold for rose of sharon in this study. However, rose of sharon was the most salinity-tolerant species among the three landscape plants.

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Managing Saline Irrigation in Horticultural Crops

Minhas,

Qadir

2024

Irrigation Sustainability With Saline and Alkali Waters

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Relative Salt Tolerance of Seven Texas Superstar® Perennials

Cited by 27 publications

References 14 publications

Salt Tolerance of Sego SupremeTM Plants

Salt Tolerance of Sego SupremeTM Plants

Comparing the Salt Tolerance of Three Landscape Plants Using a Near-continuous Gradient Dosing System

Managing Saline Irrigation in Horticultural Crops

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