| |
| Web URL(s): | http://www.jstor.org/stable/pdfplus/4044061.pdf
Last checked: 10/22/2009
Requires: PDF Reader
http://www.jstor.org/stable/4044061
Last checked: 10/22/2009 |
|---|
| Publication Type:
| Refereed |
|---|
| Author(s): | Stuart, Bryan L.;
Krieg, Daniel R.;
Abernathy, John R. |
|---|
| Author Affiliation: | Stuart: Former Graduate Research Assistant; Krieg: Professor, Department of Plant and Soil Science, Texas Tech University; Abernathy: Professor, Weed Science, Texas Agricultural Experiment Station, Lubbock, Texas |
|---|
| Title: | Photosynthesis and stomatal-conductance responses of johnsongrass (Sorghum halepense) to water stress |
|---|
| Section: | Physiology, chemistry, and biochemistry
Other records with the "Physiology, chemistry, and biochemistry" Section
|
|---|
| Source: | Weed Science. Vol. 33, No. 5, September 1985, p. 635-639. |
|---|
| Publishing Information: | Champaign, IL: Weed Science Society of America |
|---|
| # of Pages: | 5 |
|---|
| Keywords: | TIC Keywords: Carbon dioxide; Desiccation; Leaf water potential; Osmosis; Photosynthesis; Sorghum halepense; Stomatal conductance; Water stress
|
|---|
| Abstract/Contents: | "The influence of water stress on johnsongrass [Sorghum halepense (L.) Pers. #3 SORHA] physiology was evaluated in a semiarid environment. Stomatal conductance of johnsongrass responded to more negative leaf water potential and increasing leaf temperature. The sensitivity of the leaf temperature effect was dependent on the soil water content. At low soil water content, conductance was limited by low water potential, and increasing leaf temperature had little effect. Conductance of CO2 was related to net photosynthesis in a curvilinear manner, with conductance levels greater than 0.3 mol·m-2·s-1 being in excess of that necessary for maximum photosynthesis. At both high conductance levels and low levels associated with in- creased water stress, intercellular CO2 concentration increased, indicating nonstomatal limitations to photosynthesis. Decreased osmotic potential provided the highest correlation with the linear decline of photosynthetic rate as stress intensified. The expression of osmotic adjustment in johnsongrass is reported during grain filling. Plants in the milkdough stage of grain filling had approximately 0.3 MPa lower osmotic potential at any relative water content than those at anthesis." |
|---|
| Language: | English |
|---|
| References: | 15 |
|---|
| Note: | Graphs |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Stuart, B. L., D. R. Krieg, and J. R. Abernathy. 1985. Photosynthesis and stomatal-conductance responses of johnsongrass (Sorghum halepense) to water stress. Weed Sci. 33(5):p. 635-639. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=6859 |
| If there are problems with this record, send us feedback about record 6859. |
| Choices for finding the above item: |
|---|
| Web URL(s):
http://www.jstor.org/stable/pdfplus/4044061.pdf
Last checked: 10/22/2009
Requires: PDF Reader
http://www.jstor.org/stable/4044061
Last checked: 10/22/2009 |
| 
MSU catalog number: SB 610 .W38 |
| 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) |
