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| Web URL(s): | http://www.jstor.org/stable/2443026
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| Author(s): | Kemp, Paul R.;
Cunningham, Gary L. |
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| Author Affiliation: | Biology Department, New Mexico State University, Las Cruces, New Mexico |
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| Title: | Light, temperature and salinity effects on growth, leaf anatomy and photosyntesis of Distichlis spicata (L.) greene |
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| Source: | American Journal of Botany. Vol. 68, No. 4, April 1981, p. 507-516. |
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| Publishing Information: | columbus, OH: Botanical Society of America |
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| # of Pages: | 10 |
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| Keywords: | TIC Keywords: Light; Temperatures; Salinity; Growth; Leaves; Photosynthesis; Distichlis spicata; Salt tolerance; Stomatal density; Leaf area; Light intensity; Salinity stress
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| Abstract/Contents: | "The effects of light, temperature and salinity on growth, net CO2 exchange and leaf anatomy of Distichlis spicata were investigated in controlled environment chambers. When plants were grown at low light, growth rates were significantly reduced by high substrate salinity or low temperature. However, when plants were grown at high light, growth rates were not significantly affected by temperature or salinity. The capacity for high light to overcome depressed growth at high salinity cannot be explained completely by rates of net photosynthesis, since high salinity caused decreases in net photosynthesis at all environmental conditions. This salinity-induced decrease in net photosynthesis was caused largely by stomatal closure, although plants grown at low temperature and low light showed significant increases in internal leaf resistance to CO2 exchange. Increased salinity resulted in generally thicker leaves with lower stomatal density but no significant differences in the ratio of mesophyll cell surface area to leaf area. Salinity and light during growth did not significantly affect rates of dark respiration. The mechanisms by which Distichlis spicata tolerates salt appear to be closely coupled to the utilization of light energy. Salt-induced leaf succulence is of questionable importance to gas exchange at high salinity in this C4 species." |
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| Language: | English |
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| References: | 34 |
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| Note: | "The work reported here was partially supported by the State of New Mexico and the U.S. Department of the Interior, Office of Water Research and Technology under project B-058-NMEX."
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Kemp, P. R., and G. L. Cunningham. 1981. Light, temperature and salinity effects on growth, leaf anatomy and photosyntesis of Distichlis spicata (L.) greene. Amer. J. Bot. 68(4):p. 507-516. |
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| Web URL(s):
http://www.jstor.org/stable/2443026
Last checked: 01/14/2010
Access conditions: Item is within a limited-access website
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Last checked: 01/14/2010
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Access conditions: Item is within a limited-access website |
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MSU catalog number: QK 1 .B345 |
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