Full TGIF Record # 106299
Item 1 of 1
Publication Type:
i
Report
Author(s):Wang, Zeng-Yu; Hopkins, Andrew; Lawrence, Robert; Bell, Jeremey; Scott, Megann
Author Affiliation:Forage Improvement Division, The Samuel Roberts Noble Foundation, Ardmore, Oklahoma
Title:Field evaluation and risk assessment of transgenic tall fescue (Festuca arundinacea) plants
Section:Field test, risk assessment and biosafety
Other records with the "Field test, risk assessment and biosafety" Section
Meeting Info.:Third International Symposium, Molecular Breeding of Forage and Turf, Dallas, Texas and Ardmore, Oklahoma, May 18-22, 2003
Source:Molecular Breeding of Forage and Turf: Proceedings of the 3rd International Symposium, Molecular Breeding of Forage and Turf. 2004, p. 367-379.
# of Pages:13
Publishing Information:Dordrecht: Kluwer Academic Publishers
Series:Developments in Plant Breeding Volume 11
Keywords:TIC Keywords: Risk assessment; Cultivar evaluation; Transgenes; Festuca arundinacea; Field tests; Gene flow
Cultivar Names:Kentucky 31
Abstract/Contents:"Tall fescue (Festuca arundinacea Schreb.) is an outcrossing hexaploid grass species widely grown for forage and turf purposes. Transgenic tall fescue plants were generated by biolistic transformation of embryogenic cell suspension cultures of the commonly used cultivar Kentucky-31. T1 and T2 progenies were obtained after reciprocal crosses between transgenic and untransformed control plants. Molecular analysis of the progenies revealed stable meiotic transmission of transgenes following Mendelian rules in transgenic tall fesuce. Agronomic performance of the primary transgenics and primary regenerants under field conditions were generally inferior to seed-derived plants, with primary transgenics having fewer tillers and lower seed yield. However, no major differences between the progenies of transgenics and the progenies of seed-derived plants were found for the agronomic traits evaluated. The addition of a selectable marker gene in the plant genome seems to have little effect on the agronomic performance of the regenerated plants. No indication of weediness was observed for the transgenic tall fescue plants. An experiment on pollen dispersal has also been carried out using transgenic tall fescue in a central plot, surrounded by untransformed recipient plants in a wagon wheel design. The highest transgene frequencies, 0.88% at 50 m and 0.59% at 100 m, were observed north of the central plot, the prevailing wind direction. Issues regarding experimental design for gene flow studies and future directions on risk assessment of forage and turf grasses are discussed."
ISBN:1-4020-1867-3
Language:English
References:51
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
2004. Field evaluation and risk assessment of transgenic tall fescue (Festuca arundinacea) plants. Molecular Breeding of Forage and Turf: Proceedings of the 3rd International Symposium, Molecular Breeding of Forage and Turf. p. 367-379.
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