Unlocking Agriculture's Past

Unlocking agriculture’s past to feed the future world
Jacob van Etten

1
Feedingthefutureworld

IPCC, 2007

% change
-95 to -31
-30 to -11
-10 to -1
0
1 to 29
30 to 47
48 to 98
Change in suitabilityduetoclimatechange
50 crops, to 2050
Andrew Jarvis, CIAT/CCAFS

D. Lobell et al. 2011

2
Thepastisthekeytothefuture

China, 6000 years before present

Geneticchange
earlyfarmersselect

3
Thescience of agriculturalorigins

Nikolai I. Vavilov (1887-1943)
Centres of origin

Flotation

Rice spikelet bases
Which is the domesticated one?

14C radiocarbon dating
accelerator mass spectrometry (AMS)

Phytoliths
scanning electron microscope (SEM)

Experimental archaeology

Bones
Was agriculture such a good idea after all?

DNA analysis
“Old” DNA recovery

Current patterns
of genetic diversity

4
Heritage of thepast: agriculturaldiversity

Transfer of genes from CWR tocrops
“Scuba rice”
Flood-tolerance gene from landrace

Photo: J. Cherfas, Bioversity International

5
Geography: thepower of maps and models

Seed samples
available from the multilateral system

Gaps in the collections
example for sorghum

Archaeological data
Maize origin in Mexico

Overlappingpart of thedispersalroute
Divergentpart of thedispersalroute
Origin of dispersal

R2 = 0.44
measuredgeneticdistance
predictedgeneticdistance

Interactive online mapping
+

www.ie.edu/mgec

http://ayudamutuapadresenprocesodeduelo.blogspot.com	44
http://s3.amazonaws.com	33
http://www.slideshare.net	19
http://agro.biodiver.se	11
http://pelitasinar.blogspot.com	6
http://acmdemo.activecm.net	4
http://drizzlin.com	4
http://twitter.com	3
https://s3.amazonaws.com	2
http://www.farmiq.com	2
http://www.cyberforum.ru	1
https://twitter.com	1

Unlocking Agriculture's Past

by Jacob van Etten

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