Modelling the spread of pollen from Lolium perenne.: The implications for the release of wind-pollinated transgenics

被引:42
作者
Giddings, G [1 ]
机构
[1] Univ Wales, Inst Biol Sci, Aberystwyth, Ceredigion, Wales
关键词
pollen dispersal; Lolium perenne; modelling; transgenics;
D O I
10.1007/s001220051378
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
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.
引用
收藏
页码:971 / 974
页数:4
相关论文
共 18 条
[1]  
[Anonymous], WORLDS WORST WEEDS D
[2]   Crop-to-weed gene flow in the genus Sorghum (Poaceae): Spontaneous interspecific hybridization between johnsongrass, Sorghum halepense, and crop sorghum, S-bicolor [J].
Arriola, PE ;
Ellstrand, NC .
AMERICAN JOURNAL OF BOTANY, 1996, 83 (09) :1153-1159
[3]   Influence of sugar beet breeding on populations of Beta vulgaris ssp. maritima in Italy [J].
Bartsch, D ;
Schmidt, M .
JOURNAL OF VEGETATION SCIENCE, 1997, 8 (01) :81-84
[4]   Hybridizations among Brassica napus, B-rapa and B-juncea and their two weedy relatives B-nigra and Sinapis arvensis under open pollination conditions in the field [J].
Bing, DJ ;
Downey, RK ;
Rakow, GFW .
PLANT BREEDING, 1996, 115 (06) :470-473
[5]   THE ORIGIN AND EVOLUTION OF WEED BEETS - CONSEQUENCES FOR THE BREEDING AND RELEASE OF HERBICIDE-RESISTANT TRANSGENIC SUGAR-BEETS [J].
BOUDRY, P ;
MORCHEN, M ;
SAUMITOULAPRADE, P ;
VERNET, P ;
VANDIJK, H .
THEORETICAL AND APPLIED GENETICS, 1993, 87 (04) :471-478
[6]   ECOLOGY OF TRANSGENIC OILSEED RAPE IN NATURAL HABITATS [J].
CRAWLEY, MJ ;
HAILS, RS ;
REES, M ;
KOHN, D ;
BUXTON, J .
NATURE, 1993, 363 (6430) :620-623
[7]   HYBRIDIZATION AS AN AVENUE OF ESCAPE FOR ENGINEERED GENES - STRATEGIES FOR RISK REDUCTION [J].
ELLSTRAND, NC ;
HOFFMAN, CA .
BIOSCIENCE, 1990, 40 (06) :438-442
[8]   The release of genetically modified grasses .2. The influence of wind direction on pollen dispersal [J].
Giddings, GD ;
Hamilton, NRS ;
Hayward, MD .
THEORETICAL AND APPLIED GENETICS, 1997, 94 (08) :1007-1014
[9]   The release of genetically modified grasses .1. Pollen dispersal to traps in Lolium perenne [J].
Giddings, GD ;
Hamilton, NRS ;
Hayward, MD .
THEORETICAL AND APPLIED GENETICS, 1997, 94 (08) :1000-1006
[10]   Can we use experiments and models in predicting the invasiveness of genetically engineered organisms? [J].
Kareiva, P ;
Parker, IM ;
Pascual, M .
ECOLOGY, 1996, 77 (06) :1670-1675