| |
| DOI: | 10.1104/pp.66.1.97 |
|---|
| Web URL(s): | http://www.plantphysiol.org/content/66/1/97.full.pdf+html
Last checked: 08/09/12
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
|---|
| Publication Type:
| Refereed |
|---|
| Author(s): | Bolton, Jacqueline K;
Brown, R. Harold |
|---|
| Author Affiliation: | Department of Agronomy, University of Georgia, Athens, Georgia |
|---|
| Title: | Response of Panicum maximum, Panicum milioides, and tall fescue (Festuca arundinacea) to nitrogen nutrition |
|---|
| Article Series: | Photosynthesis in grass species differing in carbon dioxide fixation pathways, part 5 |
|---|
| Source: | Plant Physiology. Vol. 66, No. 1, July 1980, p. 97-100. |
|---|
| # of Pages: | 4 |
|---|
| Related Web URL: | http://www.plantphysiol.org/content/66/1/97.abstract
Last checked: 08/09/12
Notes: Abstract only |
|---|
| Keywords: | TIC Keywords: Festuca arundinacea; Panicum maximum; Panicum milioides; Photosynthesis; Nutrition; Nitrogen; Chemical composition; Water
|
|---|
| Geographic Terms: | Georgia |
|---|
| Abstract/Contents: | "The response of apparent photosynthesis to N nutrition was studied in the C3 grass, tall fescue (Festuca arundinacea Schreb.), in the C4 species Panicum maximum Jacq., and in Panicum milioides Nees ex Trin., a species with characteristics intermediate between C3 and C4 photosynthetic types. Plants were grown in culture solution containing 1, 5, 50, and 200 milligrams N per liter. Apparent photosynthesis was measured on the youngest fully expanded leaves at 320 microliters of CO2 per liter of air and 21% O2. Leaf conductance was calculated from transpiration measurements, and CO2 compensation concentrations were also estimated. Several leaf anatomical characteristics were studied on plastic-embedded material. Leaf N content was determined on leaves which were used in photosynthesis measurements. Apparent photosynthesis increased in a linear fashion with increases in leaf N content in all three species. The increase in apparent photosynthesis per unit increase in leaf N was over twice as great in P. maximum (9.7 milligrams CO2 per square decimeter per hour for each increase of 1% leaf N) as in P. milioides and tall fescue. Apparent photosynthesis and its response to N level were similar in P. milioides and tall fescue, but at leaf N concentrations above 2%, apparent photosynthesis in these two species was only about one-half of that in P. maximum. Increases in apparent photosynthesis due to higher N levels were accompanied by increases in both leaf and mesophyll conductances in P. maximum, whereas in P. milioides and tall fescue only mesophyll conductance was significantly correlated with leaf N. Water use efficiency (apparent photosynthesis/transpiration) increased in a linear manner with increased leaf N in all three species but was more closely related to leaf N in P. milioides and tall fescue than in P. maximum. High N levels tended to increase leaf thickness and interveinal distance in all three species. The percentage of air space in leaf tissue and the mesophyll cell diameter were either not affected or changed only slightly by N nutrition with the exception that percentage of air space in tall fescue leaves rose from 17.3 to 24.8 with an increase in solution N level from 1 to 200 milligrams per liter. Although P. milioides has been shown to have photosynthetic and leaf anatomical characteristics intermediate to C3 and C4 species, its response to N was similar to that of the C3 grass, tall fescue." |
|---|
| Language: | English |
|---|
| References: | 20 |
|---|
| See Also: | See also part 1 "Water-use efficiency" Crop Science, 19(3) May/June 1979, p. 375-379, R=4035. R=4035
See also part 3 "Oxygen response and enzyme activities of species in the Laxa group of Panicum" Plant Physiology, 65(1) January 1980, p. 156-159, R=3989. R=3989
See also part 6 "Differential effects of temperature and light intensity on photorespiration in C3, C4, and intermediate species" Plant Physiology, 66(4) October 1980, p. 541-544, R=3962. R=3962 |
|---|
| Note: | Tables
Graphs |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Bolton, J. K., and R. H. Brown. 1980. Response of Panicum maximum, Panicum milioides, and tall fescue (Festuca arundinacea) to nitrogen nutrition. Plant Physiol. 66(1):p. 97-100. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=3963 |
| If there are problems with this record, send us feedback about record 3963. |
| Choices for finding the above item: |
|---|
| DOI: 10.1104/pp.66.1.97 |
| Web URL(s):
http://www.plantphysiol.org/content/66/1/97.full.pdf+html
Last checked: 08/09/12
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: QK 1 .P68 |
| Find from within TIC:
Digitally in TIC by record number. |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
