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| DOI: | 10.1614/WS-D-11-00012.1 |
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| Web URL(s): | http://www.bioone.org/doi/full/10.1614/WS-D-11-00012.1
Last checked: 07/08/2011
Access conditions: Item is within a limited-access website
http://www.bioone.org/doi/pdf/10.1614/WS-D-11-00012.1
Last checked: 07/08/2011
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Avila-Garcia, Wilson V.;
Mallory-Smith, Carol |
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| Author Affiliation: | Avila-Garcia: Graduate Research Assistant; Mallory-Smith: Professor, Department of Crop and Soil Science, Oregon State University, Corvallis, OR |
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| Title: | Glyphosate-resistant Italian ryegrass (Lolium perenne) populations also exhibit resistance to glufosinate |
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| Source: | Weed Science. Vol. 59, No. 3, July-September 2011, p. 305-309. |
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| Publishing Information: | Champaign, IL: Weed Science Society of America |
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| # of Pages: | 5 |
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| Related Web URL: | http://www.bioone.org/doi/abs/10.1614/WS-D-11-00012.1
Last checked: 07/08/2011
Notes: Abstract only |
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| Keywords: | TIC Keywords: ANOVA; Ammonia; Application rates; Glufosinate; Glutamate synthase; Glyphosate; Herbicide resistance; Herbicide trials; Lolium multiflorum
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| Abstract/Contents: | "Resistance to glufosinate has been confirmed in glyphosate-resistant Italian ryegrass populations collected in hazelnut orchards in Oregon. Doseresponse, ammonia accumulation, and enzyme activity studies were conducted to test the sensitivity of three glyphosate-resistant and three susceptible Italian ryegrass populations to glufosinate. The glufosinate rates required to reduce the growth by 50% (GR50) were 0.15, 0.18, and 0.21 for the control populations C1, C2, and C3, respectively, whereas for the resistant populations OR1, OR2, and OR3, the GR50 values were 0.49, 0.42, and 0.40 kg ai ha-1, respectively, exhibiting an average resistance index of 2.4. The same trend was observed in ammonia accumulation studies between 48 and 96 h after glufosinate treatment where the susceptible populations accumulated on average two times more ammonia than the resistant populations. The glufosinate concentration required to reduce the glutamine synthetase enzyme activity by 50% (I50) was not different for the resistant and susceptible populations. The I50s ranged from 3.1 to 3.6 μM for the resistant populations and from 3.7 to 4.3 μM for the susceptible populations; therefore, an insensitive target site is not responsible for the glufosinate resistance." |
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| Language: | English |
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| References: | 34 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Avila-Garcia, W. V., and C. Mallory-Smith. 2011. Glyphosate-resistant Italian ryegrass (Lolium perenne) populations also exhibit resistance to glufosinate. Weed Sci. 59(3):p. 305-309. |
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| DOI: 10.1614/WS-D-11-00012.1 |
| Web URL(s):
http://www.bioone.org/doi/full/10.1614/WS-D-11-00012.1
Last checked: 07/08/2011
Access conditions: Item is within a limited-access website
http://www.bioone.org/doi/pdf/10.1614/WS-D-11-00012.1
Last checked: 07/08/2011
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2203399a |
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