caa a22 4500 475795830 CHVBK 20180406123724.0 cr unu---uuuuu 170329e20000401xx s 000 0 eng 10.1007/s001220051378 doi (NATIONALLICENCE)springer-10.1007/s001220051378 Giddings G. Cledwyn Building, Institute of Biological Sciences, University of Wales, Aberystwyth, Ceredigion, Wales, UK e-mail: gdg@aber.ac.uk Tel.: +44 01970-621764, Fax: +44 01970-622307, GB aut Modelling the spread of pollen from Lolium perenne. The implications for the release of wind-pollinated transgenics [Elektronische Daten] [G. Giddings] Abstract : The dispersal of pollen from a Lolium perenne source has previously been described using various Gaussian plume models which take distance and wind direction into account. One of these models is used here to calculate, using integration, possible pollen deposition onto small conspecific populations a kilometer from the source. The percentage of immigrant pollen is compared for six different sets of parameter values previously estimated from pollen-dispersal experiments. The source size is then scaled up to simulate what might happen if transgenic ryegrass was grown on a large scale. In this case it is seen that small conspecific populations might, in some conditions, be swamped by immigrant pollen, even if they are not directly downwind of the source. The implications of this are discussed in terms of assessing and managing the risks of releasing wind-pollinated transgenic crops. Springer-Verlag Berlin Heidelberg, 2000 Key words Pollen dispersal nationallicence Lolium perenne nationallicence Modelling nationallicence Transgenics nationallicence https://doi.org/10.1007/s001220051378 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s001220051378 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Giddings G. Cledwyn Building, Institute of Biological Sciences, University of Wales, Aberystwyth, Ceredigion, Wales, UK e-mail: gdg@aber.ac.uk Tel.: +44 01970-621764, Fax: +44 01970-622307, GB aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer