| |
| Web URL(s): | http://www.jstor.org/stable/2557414?seq=1#page_scan_tab_contents
Last checked: 05/17/2017
Access conditions: Item is within a limited-access website |
|---|
| Publication Type:
| Refereed |
|---|
| Author(s): | DeLucia, Evan H.;
Heckathorn, Scott A.;
Day, Thomas A. |
|---|
| Author Affiliation: | Department of Plant Biology, University of Illinois, Urbana, Illinois |
|---|
| Title: | Effects of soil temperature on growth, biomass allocation and resource acquisition of Andropogon gerardii Vitman |
|---|
| Source: | New Phytologist. Vol. 120, No. 4, April 1992, p. 543-549. |
|---|
| Publishing Information: | Oxford, England: Cambridge University Press. |
|---|
| # of Pages: | 7 |
|---|
| Keywords: | TIC Keywords: Andropogon gerardii; Soil temperature; Nutrient uptake; Photosynthesis; Growth rate
|
|---|
| Abstract/Contents: | "The effects of root temperature on growth and resource acquisition (carbon, nitrogen and phosphorus) were examined in Andropogon gerardii, a dominant C4 grass of tallgrass prairies of the midcontinental USA. Soil temperature 5·9 to 35·5°C) was manipulated independently from air temperature (c. 25/20°C day/night) in a greenhouse. Total biomass at the end of the experiment and relative growth rate (RGR) were maximum at 25°C soil temperature (Tsoil) and decreased at higher and lower temperatures. Tsoil had no effect on leaf area ratio (the ratio of leaf area to total biomass); thus the effect of Tsoil on RGR was primarily through its influence on net assimilation rate (NAR). Different mechanisms may have contributed to decreases in NAR at sub- and supra- optimal Tsoil. Soil temperatures below 20°C caused significant reductions in foliar nitrogen (N) and phosphorus (P) concentration. High concentrations of these nutrients in roots suggest that nutrient transport was more strongly inhibited than uptake, and low foliar N and P may have contributed to reduced photosynthetic rates observed at 5 and 10°C Tsoil. Net photosynthesis was < 12 µmol m-2 s-1 at 5 and 10 °C Tsoil and >20 µmol m-2 s-1 at 15-40°C. Changes in net photosynthesis did not therefore contribute to the reduction in NAR at supra-optimal Tsoil. The strong growth dependence of A. gerardii on Tsoil indicates that this abiotic factor may significantly limit productivity in tallgrass prairie, particularly early in the growing season." |
|---|
| Language: | English |
|---|
| References: | 44 |
|---|
| Note: | Tables
Graphs |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
DeLucia, E. H., S. A. Heckathorn, and T. A. Day. 1992. Effects of soil temperature on growth, biomass allocation and resource acquisition of Andropogon gerardii Vitman. New Phytol. 120(4):p. 543-549. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=24150 |
| If there are problems with this record, send us feedback about record 24150. |
| Choices for finding the above item: |
|---|
| Web URL(s):
http://www.jstor.org/stable/2557414?seq=1#page_scan_tab_contents
Last checked: 05/17/2017
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: QK 1 .N38 |
| 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) |
