Belter Anke
Saxony-Anhalt State Office for Environmental Protection, Reideburger Str. 47, 06116 Halle/Saale, Germany.
Genes (Basel). 2016 Jan 16;7(1):3. doi: 10.3390/genes7010003.
Oilseed rape is known to persist in arable fields because of its ability to develop secondary seed dormancy in certain agronomic and environmental conditions. If conditions change, rapeseeds are able to germinate up to 10 years later to build volunteers in ensuing crops. Extrapolations of experimental data acted on the assumption of persistence periods for more than 20 years after last harvest of rapeseed. Genetically-modified oilseed rape-cultivated widely in Northern America since 1996-is assumed not to differ from its conventional form in this property. Here, experimental data are reported from official monitoring activities that verify these assumptions. At two former field trial sites in Saxony-Anhalt genetically-modified herbicide-resistant oilseed rape volunteers are found up to fifteen years after harvest. Nevertheless, spatial dispersion or establishment of GM plants outside of the field sites was not observed within this period.
由于油菜籽在某些农艺和环境条件下能够形成次生种子休眠，所以人们知道它会在耕地中持续存在。如果条件发生变化，油菜籽能够在长达10年后发芽，从而在后续作物中形成自生苗。根据实验数据推断，油菜籽最后一次收获后，其持续存在期超过20年。自1996年以来在北美广泛种植的转基因油菜籽，在这一特性上被认为与传统形式没有差异。在此，报告了来自官方监测活动的实验数据，这些数据验证了这些假设。在萨克森-安哈尔特州的两个 former field trial sites，收获后长达15年仍发现有转基因抗除草剂油菜籽自生苗。然而，在此期间未观察到转基因植物在田间 sites 之外的空间扩散或定植。
