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DOI: | 10.2135/cropsci2006.10.0639 |
Web URL(s): | https://dl.sciencesocieties.org/publications/cs/pdfs/47/6/2504 Last checked: 11/16/2016 Requires: PDF Reader Access conditions: Item is within a limited-access website https://dl.sciencesocieties.org/publications/cs/articles/47/6/2504 Last checked: 11/16/2016 Access conditions: Item is within a limited-access website |
Publication Type:
| Refereed |
Author(s): | Lee, Geung-Joo;
Duncan, Ronny R.;
Carrow, Robert N. |
Author Affiliation: | Department of Crop and Soil Sciences, University of Georgia, Griffin, Georgia |
Title: | Nutrient uptake responses and inorganic ion contribution to solute potential under salinity stress in halophytic seashore paspalums |
Section: | Turfgrass science Other records with the "Turfgrass science" Section
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Source: | Crop Science. Vol. 47, No. 6, November/December 2007, p. 2504-2512. |
Publishing Information: | Madison, WI: Crop Science Society of America |
# of Pages: | 9 |
Related Web URL: | https://dl.sciencesocieties.org/publications/cs/abstracts/47/6/2504 Last checked: 11/16/2016 Notes: Abstract only |
Keywords: | TIC Keywords: Nutrient uptake; Salinity stress; Paspalum vaginatum; Halophytes; Salt tolerance; Ions; Shoot growth; Root growth; Potassium; Sodium; Chlorine; Magnesium; Calcium; Osmotic adjustment
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Abstract/Contents: | "There is increasing interest in superior halophytes for use on saline turfgrass, forage, and land reclamations sites. We investigated halophytic seashore paspalum (Paspalum vaginatum Swartz) ecotype responses for inorganic ion uptake in shoot tissues and to identify total and individual inorganic ion contributions to total solute potential (Ψs) adjustment under increasing salinity. In a greenhouse study, nine ecotypes varying substantially in salinity tolerance were grown in nutrient/sand culture with six salinity levels up to 49.7 dS m-1. Increasing salinity reduced uptake of K, Ca, and Mg, with Mg most affected. Sodium tissue content increased with salinity, but Cl increased and then declined as salinity increased. The least salt- tolerant ecotype, 'Adalayd', exhibited lower Cl uptake at high salinity compared to the most salt-tolerant types (SI 93-2, HI 101). Shoot and root growth were positively correlated to K tissue content and K was the primary ion for solute potential (Ψs) adjustment. Inorganic ions contributed 57 to 97% to Ψs adjustment with salt-tolerant ecotypes exhibiting less dependence on inorganic ions for Ψs adjustment apparently due to their ability to maintain synthesis of organic osmolytes under high salinity. In terms of physiological traits adapted for salt-screening protocols the following were not useful: tissue nutrient/element content; K/Na and Ca/Na tissue content ratios; and K or other ion contributions to total Ψs in percent or MPa units. Shoot tissue content relationships of K, Mg, and Ca to increasing salinity indicate the importance of nutritional programs for these nutrients on salt-affected sites." |
Language: | English |
References: | 47 |
See Also: | Other items relating to: Seashore Paspalum - Since 2000 |
Note: | Tables |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Lee, G.-J., R. R. Duncan, and R. N. Carrow. 2007. Nutrient uptake responses and inorganic ion contribution to solute potential under salinity stress in halophytic seashore paspalums. Crop Sci. 47(6):p. 2504-2512. |
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| DOI: 10.2135/cropsci2006.10.0639 |
| Web URL(s): https://dl.sciencesocieties.org/publications/cs/pdfs/47/6/2504 Last checked: 11/16/2016 Requires: PDF Reader Access conditions: Item is within a limited-access website https://dl.sciencesocieties.org/publications/cs/articles/47/6/2504 Last checked: 11/16/2016 Access conditions: Item is within a limited-access website |
| MSU catalog number: b2211522a |
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