Unlocking Agriculture's Past
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Unlocking Agriculture's Past

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A presentation given at the National Geographic store in Madrid on July 28, 2011.

A presentation given at the National Geographic store in Madrid on July 28, 2011.

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Unlocking Agriculture's Past Unlocking Agriculture's Past Presentation Transcript

  • 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
  • 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