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- W2008796550 abstract "Abstract In many species of crop plant, gene flow by cross-pollination is possible between spatially separate fields. To preserve a crop's varietal purity or to restrict ingress into conventional varieties of genetically modified (GM) genes, a quantitative understanding of gene flow is useful. Previous measurements of gene flow in safflower ( Carthamus tinctorius L.), a crop with GM varieties, were made in plots of less than 1 ha. Here, I evaluate a mathematical model of field-to-field gene flow due to insect pollination using parameter values appropriate to a large agricultural field of safflower. The model was solved based on laboratory pollination experiments and observations made on a large (40 ha) safflower field in Lethbridge, Canada that was pollinated by honey bees ( Apis mellifera ) and bumble bees ( Bombus spp.). The model estimated the maximum feasible level of bee-mediated, field-to-field gene flow to range between 0.05% and 0.005% of seed set (95% upper confidence intervals of 0.23% and 0.023%), depending on the composition of the bee fauna. These relatively low values emerged for two reasons: safflower has a high capacity for automatic self-fertilization; and bees undertook long foraging bouts in the field, which made between-field pollinations relatively rare. A strategy for minimizing GM gene flow should utilize a conventional safflower variety that has a high capacity for automatic self-fertilization and should allow the conventional plants to grow in large stands to encourage long foraging bouts by bees." @default.
- W2008796550 created "2016-06-24" @default.
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- W2008796550 date "2010-08-01" @default.
- W2008796550 modified "2023-09-24" @default.
- W2008796550 title "A mechanistic model of pollinator-mediated gene flow in agricultural safflower" @default.
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- W2008796550 doi "https://doi.org/10.1016/j.baae.2009.12.006" @default.
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