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Out-crossing between genetically modified herbicide-tolerant and other winter oilseed rape cultivars

Published online by Cambridge University Press:  12 February 2007

Euan Simpson ,
Neil McRoberts  and
Jeremy Sweet
Euan Simpson
Affiliation:
NIAB, Huntingdon Road, Cambridge CB3 0LE, UK
Neil McRoberts
Affiliation:
Scottish Agricultural College, Auchincruive, Ayr, KA6 5HW, UK
Jeremy Sweet*
Affiliation:
NIAB, Huntingdon Road, Cambridge CB3 0LE, UK
*
*Corresponding author: E-mail: [email protected]
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Abstract

Out-crossing between genetically modified herbicide-tolerant (GMHT) and non-GM rape cultivars was studied using GMHT source field plots of approximately 0.8 ha. Levels of cross-pollination between adjacent fully fertile rape varieties declined rapidly with increasing distance from the interface between plots. A varietal association with low levels of male sterility showed higher levels of out-crossing than other varieties. Out-crossing data were used to compare negative exponential and inverse power-law models for their fit to describe the observed relationship between cross-pollination and distance from source. Results showed that the inverse power-law model provided a better fit of the data.

Keywords

dispersal curvesgenetically modifiedherbicide toleranceoilseed rapeout-crossing
Type
Research Article
Information
Plant Genetic Resources , Volume 4 , Issue 2 , August 2006 , pp. 96 - 107
Copyright
Copyright © NIAB 2006

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