Co-existence issues of GM sugar beet
2013
Darmency, Henri
This chapter explores basic biological, agronomic, and economical issues relevant to sugar beet agriculture, as well as the different possible sources of admixture between GM and non-GM sugar beet roots. Admixture occurs primarily within sown seed lots, due to gene flow and seed handling in the nursery, and through root collection procedures that occur between the time of harvest and product arrival at the sugar refinery. Other coexistence issues must be addressed because sugar beets exhibit a low rate of bolting, which results in accidental pollen flow to the surrounding area. In addition, roots left unharvested in the field can survive through the winter and flower the following year. I present analyses of the consequences of gene flow from GM beets to: sea beets (posing a threat to genetic resources), vegetable and garden beets (posing a threat to private propagation), and weed beets (posing a threat to farming systems, especially in the case of herbicide-resistant GM beets).
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