Poster presented at Plant Biology & Botany Join Congress. Chicago (USA), 7-11 Jul 200

Andersson, Meike S.

Hyman, Glenn

Jarvis, Andy

Vicente, M.C. de

Álvarez Sánchez, D.F.

English

Hyman, Glenn G.

Vicente, M. Carmen de

CGSpace (CGIAR)

Gene flow indicatorsh Biological information Centre(s) of origin, centre(s) of diversity Mating system, vegetative regeneration Flowering  Pollen dispersal and viability Seed dispersal and persistence, seed banks  Volunteers, ferals Persistence, weedinessh Pollen flow and separation distancesh GE technology – state of development State of GE technology, GE traits Total crop area, % GE crop area Commercial GE production (countries) GE field trials (countries)h Sexually compatible crop wild relativesh Hybridization potentialh Geographical distribution → risk mappingMeike S Andersson1, Diego F Álvarez Sánchez2, Andy Jarvis3, Glenn Hyman3 and M Carmen de Vicente41 Bioversity International (formerly IPGRI), Rome, Italy; 2 Universidad del Valle, Cali, Colombia; 3 International Centre for Tropical Agriculture (CIAT), Cali, Colombia; 4 Generation Challenge Program (GCP, CIMMYT), México D.F., MéxicoGene flow risk assessment in centres of crop origin and diversityContact:Meike S AnderssonBioversity InternationalRegional Office for the AmericasTel. +57(2) 445 0048 ext 113m.andersson@cgiar.org; m.andersson@web.deDeutsche Gesellschaft fürTechnische Zusammenarbeit (GTZ) GmbHBackgroundWith the constant development of transgenic technology for a wide variety of major and minor crops, there is a need for comprehen-sive, easily accessible baseline information to evaluate the potential of gene flow  and introgression between crops and their wild relatives, particularly in centres of crop origin and diversity.  Purpose and ObjectivesCompile gene flow information to assist well-informed decision-making on the ecological risk of releasing genetically engineered (GE) crops in their centres of origin and/or diversityh Assemble baseline gene flow research data for the 20 most important crops h Identify sexually compatible CWR for each crop h Identify crop-specific factors to consider for evaluating the potential of gene flow and introgressionh Evaluate the potential of gene flow and introgression between the 20 most important crops and their crop wild relativesh Map gene flow “hot-spots”h Identify knowledge gaps and research needsCrops includedh Banana & plantain h Oat h Barley h Oilseed rape h Cassava h Pearl milleth Chickpea h Pigeon peah Cotton h Potato h Cowpea h Rice h Common bean h Sorghum h Finger millet h Soybean h Groundnut h Sweet potato h Maize h WheatFig. 2. Published studies on maize pollen flow show a rapid decrease of outcrossing rates within the first 50 m. How-ever, in several occasions outcrossing rates beyond 100 m far exceed the 0.9% threshold defined by the European Union. The isolation distances of 200 m recommended in many countries should therefore not be further reduced. Thanks for financial support:Outputsh Comprehensive baseline information to assist the evaluation of the gene flow and introgression potential of 20 crops and their sexually compatible crop wild relatives (e.g., Fig. 1 and 2) h World maps per crop, identifying “hot-spots” for gene flow between the crop and its wild relatives to assist the decision on further risk assessment by analyzing other determinant factors (e.g., Fig. 3 and 4) h Knowledge and research gaps that need to be addressed for adequate risk assessmenth Publication in form of a book, consisting of an introductory chapter (overview of hybridization, gene flow, introgression, ecological impact, risk assessment etc.) and 20 crop-specific chapters (relevant factors for assessing the risk of gene flow and its ecological implications and impact), including coloured world maps to identify at a first glance regions with high, moderate and low gene flow potential.Fig. 4. Hot-spots of high gene flow risk for wild relatives of sorghumFig.1. Screen shots of an example chapter: Gene flow in chickpea (Cicer arietinum L.)Fig. 3. Hot-spots of gene flow risk for oilseed rape and its wild relatives1 243

Gene flow risk assessment in centres of crop origin and diversity

https://cgspace.cgiar.org/bitstream/10568/67496/1/Anderssson_geneflowriskassessment.pdf

Gene flow risk assessment in centres of crop origin and diversity

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