Full TGIF Record # 98707
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Web URL(s):http://www.wsweedscience.org//wp-content/uploads/proceedings-archive/2004.pdf#page=29
    Last checked: 12/10/2013
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Perez-Jones, Alejandro; Park, Kee-Woong; Colqhhoun [Colquhoun], Jed; Mallory-Smith, Carol
Author Affiliation:Crop Science Building, Oregon State University, Corvallis, Oregon
Title:Glyphosate-resistant Lolium multiflorum in Oregon
Section:Weeds of agronomic crops
Other records with the "Weeds of agronomic crops" Section
Meeting Info.:Colorado Springs, Colorado: March 9-11, 2004
Source:Proceedings of the Western Society of Weed Science. Vol. 57, 2004, p. 27.
# of Pages:1
Publishing Information:Newark, CA: Western Society of Weed Science
Keywords:TIC Keywords: Herbicide resistance; Genes; Lolium multiflorum; Glyphosate; Biomass
Abstract/Contents:"A suspected glyphosate-resistant Lolium multiflorum population was collected from a filbert orchard near Portland, OR. Glyphosate was applied multiple times per year for about 15 years in the orchard. Greenhouse studies were conducted to determine if this population was glyphosate-resistant. The plants were sprayed with glyphosate (13 to 3370 g ae/ha) 14 days after planting using an overhead compressed air sprayer calibrated to deliver 187 L/ha. Aboveground biomass was harvested 3 weeks after herbicide treatment, dried at 70 C for 48 h and weighed. Biomass data are reported as percent of untreated control. The study was conducted twice. At 421 g ae/ha, biomass of the susceptible biotype was reduced by 95%, while that from the resistant biotypes was only reduced by 25%. This level of resistance is similar to that reported from a glyphosate-resistant population from Chile. The mechanism of resistance is still unknown. However, no amino acid change was found after the EPSPS gene was amplified and sequenced."
Note:"This article appears as abstract only."
Geographic Terms:Oregon
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Perez-Jones, A., K. -W. Park, J. Colqhhoun [Colquhoun], and C. Mallory-Smith. 2004. Glyphosate-resistant Lolium multiflorum in Oregon. Proc. West. Soc. Weed Sci. 57:p. 27.
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    Last checked: 12/10/2013
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    Notes: Item is within a single large file
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MSU catalog number: SB 610 .W43 v.49
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