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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2005 Proceedings-SWSS.pdf#page=207
Last checked: 07/18/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Mallory-Smith, C. A. |
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| Author Affiliation: | Department of Crop and Soil Science, Oregon State University, Corvallis, OR |
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| Title: | Gene flow from transgenic turfgrasses: Occurrence versus consequence |
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| Section: | Use & impact of transgenic turfgrass species in the Southeastern US
Other records with the "Use & impact of transgenic turfgrass species in the Southeastern US" Section
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| Meeting Info.: | Charlotte, North Carolina: January 24-26, 2005 |
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| Source: | Proceedings of the 58th Annual Meeting of the Southern Weed Science Society. Vol. 58, 2005, p. 132. |
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| Publishing Information: | Champaign, Illinois: Southern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Agrostis stolonifera; Evaluations; Gene flow; Transgenic turfgrasses; Roundup Ready
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| Geographic Terms: | Southwestern United States |
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| Abstract/Contents: | "The introduction of transgenic turfgrasses has raised concerns within the agricultural and environmental communities. Issues include: a) gene flow out of the production fields via pollen, seed, or vegetative propagules and the impact in managed and nonmanaged systems; b) cross-contamination of other crops; and c) production of a resistant volunteer plant. However, the real issue is not whether gene flow will occur, because it will, but rather are there negative consequences when it occurs. The introduction of Roundup Ready™ creeping bentgrass (Agostis stolinifera) seed production into Oregon provided a unique opportunity to assess gene flow and its consequences. Creeping bentgrass is an outcrossing perennial species that crosses with related species. Its pollen can move long distances and its seeds are extremely small (8 million seeds/lb). In addition, it reproduces vegetatively. Creeping bentgrass is found in noncultivated areas and can be weedy in its own right. These biological factors make it more difficult to manage than other Roundup resistant crops such as corn and soybeans. In addition, the seed is being produced for propagation of turf rather than being processed into oil or meal. Therefore, viable seed will be transported and planted on golf courses throughout the United States. In Oregon, about 400 acres of Roundup Ready™ creeping bentgrass were planted in 2002. Management strategies were put in place to specifically address gene containment and mitigation of gene movement. Studies were conducted to evaluate gene flow via pollen and seed movement and the effectiveness of the management strategies. The Roundup Ready gene moved via both pollen and seed. Seed collected from related species tested positive for the resistance trait. Although, there was hybridization with related species, no negative consequence has been documented as yet. It is unknown whether the hybrids will be fertile and retain the resistance gene over subsequent generations which could then produce a resistant species. The seed moved into other production fields and along irrigation canals and ditches. This movement required increased inputs by growers to control the resistant plants. A mitigation program for this movement is now underway and its effectiveness will be assessed over the next several growing seasons." |
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| Language: | English |
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| References: | 0 |
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| Note: | "The changing world of weed science"
This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Mallory-Smith, C. A. 2005. Gene flow from transgenic turfgrasses: Occurrence versus consequence. South. Weed Sci. Soc. Proc. 58:p. 132. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2005 Proceedings-SWSS.pdf#page=207
Last checked: 07/18/2013
Requires: PDF Reader
Notes: Item is within a single large file |
| 
MSU catalog number: b2207931 |
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