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| Web URL(s): | https://www.dl.sciencesocieties.org/publications/cs/articles/42/5/1498
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https://www.dl.sciencesocieties.org/publications/cs/pdfs/42/5/1498
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| Publication Type:
| Refereed |
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| Author(s): | Asay, Kay H.;
Johnson, Douglas A.;
Waldron, Blair L.;
Jensen, Kevin B. |
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| Author Affiliation: | USDA-ARS, Forage Range and Research Laboratory, Utah State University, Logan, UT |
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| Title: | Carbon isotope discrimination in orchardgrass and ryegrasses at four irrigation levels |
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| Section: | Crop breeding, genetics and cytology
Other records with the "Crop breeding, genetics and cytology" Section
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| Source: | Crop Science. Vol. 42, No. 5, September/October 2002, p. 1498-1503. |
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| Publishing Information: | Madison, WI: Crop Science Society of America |
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| # of Pages: | 6 |
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| Keywords: | TIC Keywords: Carbon; Isotopes; Dactylis glomerata; Lolium perenne; Irrigation rates; Pastures; Relationships; Dry weight; Lolium x hybridum; Cultivars
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| Abstract/Contents: | "Availability of irrigation water is often the limiting in the establishment of improved pastures in the U.S. Intermountain Region, and grasses used for pasture should have enhanced water-use effciency (WUE). Objectives of this study were to describe (i) relationships between carbon isotope discrimination (Δ) and dry matter (DM) yield, and (ii) trends in Δ across four water levels (WL 2, wettest, to WL 5, driest) and two harvest dates under frequent defoliation in cultivars of orchardgrass (Dactylis glomerata L.) perennial ryegrass, (Lolium perenne L.), intermediate ryegrass (L. Xhybridum Hausskun), and festulolium [Xfestulolium braunii (K. Richt.) A. Camus.]. Within all WLs, orchardgrass cultivars exhibited higher WUE than the ryegrasses, which includes intermediate ryegrass and festulolium. Significatly more variation for Δ within WLs was observed in the ryegrasses than orchardgrass. For orchardgrass, DM yield and Δ were not correlated at WLs 2 to 4. However, they were negatively correlated at WL 5. Correlations between Δ and DM yield were not significant at WLs 2 and 3 for the ryegrasses, but were positive at WLs 4 and 5. To avoid possible declines in DM yield in breeding programs to increase WUE in orchardgrass and the ryegrasses, DM yield should also be monitored." |
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| Language: | English |
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| References: | 33 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Asay, K. H., D. A. Johnson, B. L. Waldron, and K. B. Jensen. 2002. Carbon isotope discrimination in orchardgrass and ryegrasses at four irrigation levels. Crop Sci. 42(5):p. 1498-1503. |
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| Web URL(s):
https://www.dl.sciencesocieties.org/publications/cs/articles/42/5/1498
Last checked: 05/05/2017
Access conditions: Item is within a limited-access website
https://www.dl.sciencesocieties.org/publications/cs/pdfs/42/5/1498
Last checked: 05/05/2017
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: SB 183 .C7 |
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