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Pollen-mediated gene flow between glyphosate-resistant Brassica napus canola and B. juncea and B. carinata mustard crops under large-scale field conditions in Saskatchewan

Séguin-Swartz, G., Beckie, H.J., Warwick, S.I., Roslinsky, V., Nettleton, J.A., Johnson, E.N., Falk, K.C. (2013). Pollen-mediated gene flow between glyphosate-resistant Brassica napus canola and B. juncea and B. carinata mustard crops under large-scale field conditions in Saskatchewan, 93(6), 1083-1087. http://dx.doi.org/10.4141/CJPS2013-129

Abstract

A Saskatchewan study examined hybridization between two mustard (Brassica juncea and B. carinata) crops that were either adjacent to a glyphosateresistant canola (B. napus) crop or separated by a 5-m strip. Overall, field hybridization levels, detected with glyphosate resistance and species-specific AFLP markers, were low: 0.024% and up to 400 m in the adjacent B. juncea field and 0.013% (up to 350 m) in the separated field, and 0.005% (up to 150 m) in the adjacent B. carinata field and 0.002% (up to 65 m) in the separated field. Based on fitness information under controlled conditions, the fertility of hybrid plants is expected to be low.

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