2005 NCWSS - Crop Gene Flow

2005 North Central Weed Science Society Proceedings

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Crop Gene Flow and the Occurrence and Consequences of Gene Introgression
between Crops and Their Sexually Compatible Relatives

Introduction to Gene Flow and Introgression Biology. Neal Stewart*; University of Tennessee, Knoxville. (75)

The Population Genetics of Moving Genes: Implications for the Receiving Population. Norman Ellstrand*; University of California, Riverside. (76)

Implications of Gene Flow on the Seed Production Industry. Barry Martin*; Monsanto, St. Louis. (77)

The Importance of Understanding Biogeography and Reproductive Biology of Sexually Compatible Species. Baltazar Baltazar*; Pioneer, Sta. Rosa Tapachula, Nayarit. (78)

Understanding Gene Flow and Introgression Consequences for Biotech Crop Risk Assessment. Thomas Nickson*; Monsanto, St. Louis. (79)

Biotechnology and Biodiversity Competitive Grant Program. Hector Quemada* and Karen Hokanson*; Program for Biosafety Systems, Western Michigan University, Kalamazoo. (115)

Biogeography of Bentgrasses (Agrostis) in Connecticut. Carol A. Auer*; Univ. of Connecticut, Storrs. (116)

Detecting Gene Flow from Imidazolinone Resistant Wheat to Conventional Wheat Varieties. Todd A. Gaines*, Christopher Preston, Patrick F. Byrne, Scott J. Nissen, Dale L. Shaner, W. Brien Henry and Philip H. Westra; Colorado State University, Fort Collins. (117)

Pollen-mediated Gene Flow Among Winter Wheat Cultivars and From Wheat to Jointed Goatgrass in the Pacific Northwest. Bradley D. Hanson, Carol A. Mallory-Smith*, Robert S. Zemetra, Donald C. Thill, and Bahman Shafii; USDA-ARS, Parlier, CA; Oregon State University, Corvallis; and University of Idaho, Moscow. (118)

Potential of Crop-to-wild Gene Flow in Sorghum in Ethiopia and Niger: A Geographic Survey. Tesfaye Tesso, Issoufou Kapran, Cécile Grenier*, Gebisa Ejeta, Allison A. Snow, Jeffrey F. Pedersen, Gurling Bothman, David B. Marx, and Patricia M. Sweeney; EARO/MARC, Melkassa, Ethiopia; INRAN, Niamey Niger; Purdue Univ., West Lafayette, IN; Ohio State Univ. Columbus; USDA, Univ. of Nebraska Lincoln; and ARC-Roodeplaat Pretoria, South Africa. (119)

Molecular Confirmation of Evolution of Crop Mimicry by Introgression from Maize to Teosinte. Lesley Blancas*, Dulce Maria Arias, Ariel Alvarez Morales, and Norman C. Ellstrand; Univ. of California, Riverside; CEAMISH-UAEM, Mexico; and CINVESTAV-IRAPUATO, Mexico. (120)

Gene Flow from Detasseled Maize in a Regulated Production System. Gene Stevens*, Michael Horak, Sharon Berberich, and Mark Halsey; University of Missouri, Portageville; Monsanto Co., St. Louis, MO; Chlorogen, Inc., St. Louis, MO; and Donald Danforth Plant Science Center, St. Louis, MO. (121)

Allozyme Variation and Population Genetic Structure of New World and Old World Populations of Johnsongrass, (Sorghum halepense). Paul E. Arriola* and Lesley Blancas; Elmhurst College, Elmhurst, IL; and Univ. of California, Riverside. (122)

Effects of Virus-resistant Transgenic Squash on Pollinator Behavior. Holly R. Prendeville* and Diana Pilson; Univ. of Nebraska, Lincoln. (123)

Biogeographic Survey of Feral Alfalfa Populations in the U.S. During 2001 and 2002 as a Component of an Ecological Risk Assessment of Roundup Ready Alfalfa®. Daniel L. Kendrick*, Todd A. Pester, Michael J. Horak, Glennon J. Rogan, and Thomas E. Nickson; Monsanto Company, St. Louis, MO. (124)

Assessing GM x Wild Rice Hybrid Fitness. Joe Leverich*, Anbreen Bashir, and Barbara Schaal; St. Louis University, St. Louis, MO; Washington University, St. Louis, MO. (125)

Confirmation of Hybridization Between Rice and Phenotypically Distinct Red Rice Types in Arkansas Rice Fields. D. Gealy*, L. Estorninos, C. Wilson, and H. Agrama; USDA-ARS DBNRRC, Stuttgart, AR; and University of Arkansas Rice Research and Extension Center, Stuttgart. (126)

Pollen-mediated Gene Flow in Canola. E. Rosenbaum*, M. Horak, T. Pester, and T. Nickson; Monsanto Company, St. Louis, MO. (127)

Pollen-Mediated Gene Flow in California Cotton Depends on Pollinator Activity. Allen Van Deynze*, Frederick J. Sundstrom, and Kent Bradford; Seed Biotechnology Center, University of California, Davis; and California Crop Improvement Association, University of California. (128)

Assessment of the Potential for Gene Flow Between Transgenic Cotton and the Endemic Hawaiian Cotton. John M. Pleasants* and Jonathan F. Wendel; Iowa State University, Ames. (129)

Landscape-level Gene Flow from Clearfield Winter Wheat to Conventional Wheat Over Three Years. Philip Westra*, Pat Byrne, Todd Gaines, Scott Nissen, Dale Shaner, Brien Henry, and Christopher Preston; Colorado State University and USDA/ARS, Fort Collins. (130)

Using Time and Distance Isolation Factors for Confinement of Pollen-mediated Gene Flow in Maize. Mark E. Halsey*, Kirk M. Remund, Philip J. Eppard, Christopher A. Davis, Mick Qualls and Sharon A. Berberich; Donald Danforth Plant Science Center, St. Louis, MO; Monsanto Company, St. Louis, MO; Monsanto Company, Coalinga, CA; Qualls Ag Labs, Ephrata, WA; and Chlorogen, St. Louis, MO. (131)

Evaluation of Temporal Isolation on Frequency and Distance of Pollen-mediated Gene Flow in Corn Measured at Two Interfield Spacings. Eric W. Rosenbaum*, Michael J. Horak, Todd A. Pester, and Thomas E. Nickson; Monsanto Company, St. Louis, MO. (132)

Modeling Genetically-modified Maize Grain Production Practices to Achieve EU Labeling Thresholds. David I Gustafson*, Ivo O. Brants, Michael J. Horak, Kirk M. Remund, Eric W. Rosenbaum, and John K. Soteres; Monsanto Co. St. Louis, MO. (133)

Using a Net Fitness Approach to Assess Introgression Potential: Models Meet Data. Arthur E. Weis* and Amanda Dick; Univ. of California, Irvine. (178)

Bioinformatics for Assessment of Reproductive Compatibility Between Crops and Their Relatives. Richard G. FitzJohn*, Aaron D. Wilton, Tristan T. Armstrong, and Linda E. Newstrom; Landcare Research, New Zealand. (179)

Importance of Using Diverse Germplasm and Multiple Conditions to Understand the Evolutionary Consequences of Crop-wild Gene Flow. Kristin L. Mercer*, Ruth G. Shaw, and Donald L. Wyse; Univ. of Minnesota, St. Paul. (180)

Gene Flow From Glyphosate Resistant Creeping Bentgrass Fields: Migration vs. Mitigation. Carol Mallory-Smith*, Maria Zapiola, Claudia Campbell and Marvin Butler; Oregon State Univ., Corvallis. (181)

A Decade of Introgression: Crop Alleles in Experimental Populations of Wild Radish (Raphanus raphanistrum). Allison A. Snow*, Theresa M. Culley, Lesley G. Campbell, Norman C. Ellstrand, Kristen L. Uthus, and Subray Hegde; Ohio State Univ., Columbus; Univ. of Cincinnati, OH; Univ. of California, Riverside. (182)

Understanding Gene Flow Between Canola Crops in the Australian Environment. Christopher Preston* and Jeanine Baker; CRC for Australian Weed Management and University of Adelaide, Adelaide, Australia. (183)

Five Year Summary of Risk Assessment Research in Louisiana Rice. James H. Oard*, Weiqiang Zhang, Steve D. Linscombe, and Eric Webster; LSU AgCenter, Baton Rouge, LA. (184)

Parentage Analysis of Some Weedy Rices in Sri Lanka. V. Ariya Sumanasinghe*, H.M.Venura.G. Herath, and R.M.Tissa Rajapakshe; University of Peradeniya, SRI LANKA; and Plant Genetic Resources Centre, SRI LANKA. (185)

Gene Flow in Alfalfa -- A Bee Pollinated Out-crossing Crop Species. Larry R. Teuber*, Allen Van Deynze, Shannon C. Mueller, and Sharie Fitzpatrick; University of California, Davis; and Forage Genetics International, West Salem, WI. (186)

Population Effects of Gene Flow from Transgenic Sunflower to Wild Helianthus annuus. Diana Pilson*, Helen M. Alexander, and Allison A. Snow; University of Nebraska, Lincoln; Univ. of Kansas, Lawrence; and Ohio State University, Columbus. (187)

AHAS Genes and Herbicide Tolerance in Helianthus: a Review and Considerations for Gene Flow. Mark L. Dahmer*, Siyuan Tan, and Richard R. Evans; BASF Corporation, Research Triangle Park, NC. (188)

Stewardship of Clearfield Crops: Cooperative efforts of industry, academia, and growers. James F. Gaffney*, Mark L. Dahmer, and Siyuan Tan. BASF Corporation. Research Triangle Park, NC. (1E)

Lack of evidence for interspecific hybrid origin in feral rye. Jutta C. Burger, Sky Lee, and Norman C. Ellstrand. University of California, Riverside. Riverside, CA. (2E)

The life of a social radish. Competition and its fitness consequences for advanced-generation, crop-wild hybrids. LG Campbell and AA Snow. Ohio State University, Columbus. (3E)

Evaluation of pollen confinement techniques. R.W. Arritt*, C.A. Clark, M.E. Westgate, B. Viner, A.S. Goggi. Iowa State University, Ames. (4E)

Assessing the impact of gene flow: Extensive risk assessments demonstrate that glyphosate tolerant bentgrass gene flow will have no significant impact. Eric K. Nelson, Douglas Cattani, Robert Harriman, Kevin Turner. The Scotts Company, Marysville, OH. (5E)