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| Web URL(s): | https://dl.sciencesocieties.org/publications/aj/pdfs/79/3/AJ0790030541
Last checked: 12/09/2016
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| Publication Type:
| Refereed |
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| Author(s): | Frank, A. B.;
Barker, R. E.;
Berdahl, J. D. |
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| Author Affiliation: | Plant physiologist and geneticists, respectively, USDA-ARS, Northern Great Plains Res. Lab., P.O. Box 459, Mandan, ND. |
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| Title: | Water-use efficiency of grasses grown under controlled and field conditions |
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| Source: | Agronomy Journal. Vol. 79, No. 3, May/June 1987, p. 541-544. |
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| Publishing Information: | Washington: American Society of Agronomy |
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| Keywords: | TIC Keywords: Transpiration; Photosynthesis; Stomatal conductance; Forage; Evapotranspiration; Agropyron desertorum
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| Geographic Terms: | Northern Great Plains, USA |
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| Abstract/Contents: | "Forage production from grasses grown in the semiarid northern Great Plains is primarily a function of available water during the growing season. There is a need to develop procedures using controlled environments to shorten the time for identifying germplasm that differs in water-use efficiency (WUE). Field determination of WUE requires several years to evaluate genetic and environmental effects. This study compares WUE of field grown cultivars of crested wheatgrass [Agropyron desertorum (Fisch. ex Link) Shult.], intermediate wheatgrass [Thinopyrum intermedium (Host) Barkworth and Dewey], and western wheatgrass [Pascopyrum smithii Rybd. (Love)] to identical plants grown in a controlled environment. Net CO2 assimilation (A), transpiration rate (E), A/E ratio, and conductances on a leaf basis for plants grown in a controlled environment were compared to WUE calculated from dry matter accumulation and total evaptranspiration for field grown plants. Generally, cultivars within a species that exhibited higher E and A and a lower A/E ratio in controlled environments also had higher field WUE. In contrast, comparisons among species indicated that crested wheatgrass had the lowest E, A, and A/E ratio, but had the highest field WUE. The intercellular CO2 concentration (ci) differed among cultivars within species, with the stomates of the higher WUE cultivars functioning to maintain higher ci. Correlations of field WUE with controlled environment measurements suggest that the A/E ration is not a good predictor of field WUE for the species examined in this study." |
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| Language: | English |
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| References: | 15 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Frank, A. B., R. E. Barker, and J. D. Berdahl. 1987. Water-use efficiency of grasses grown under controlled and field conditions. Agron. J. 79(3):p. 541-544. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/aj/pdfs/79/3/AJ0790030541
Last checked: 12/09/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: S 22 .A45 |
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