Unlocking Agriculture's Past

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This document discusses the importance of understanding agriculture's past to help feed the future world. It highlights several key points: 1. Studying the past is key to understanding the future of agriculture. Early farmers began selectively breeding crops like rice in China over 6,000 years ago. 2. The science of agricultural origins was pioneered by Nikolai Vavilov in the early 20th century who identified centers of origin for crops. New techniques like radiocarbon dating and DNA analysis are unlocking more information. 3. Agricultural diversity is important for the future as genes from crop wild relatives and landraces can be transferred to crops to provide benefits like flood tolerance. Understanding patterns of genetic diversity is crucial.

Education Technology

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

% 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

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

Rice spikelet bases Which is the domesticated one?

14C radiocarbon dating accelerator mass spectrometry (AMS)

Phytoliths scanning electron microscope (SEM)

Bones Was agriculture such a good idea after all?

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

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Unlocking Agriculture's Past

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

2. 1 Feedingthefutureworld

3. IPCC, 2007

4. % 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

5. D. Lobell et al. 2011

10.

11. 2 Thepastisthekeytothefuture

12.

13.

14.

15. China, 6000 years before present

16.

17.

18. ?

19. ?

20. ?