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Beating the Heat

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Breeding Common Bean for Increased Temperatures

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Beating the Heat

  1. 1. Beating the Heat: Breeding Common Bean for Increased Temperatures Steve Beebe Idupulapati Rao José Polanía César Cajiao Miguel Grajales Santos Barrera Nestor Chavés Julián Ramirez David Arango
  2. 2. Common Bean Production and Consumption in ES Africa
  3. 3. Bean expenditure by economic strata Quintile 1 Quintile 2 Quintile 3 Quintile 4 Quintile 5 Rural 408.23 675.71 917.63 1087.3 1237.1 Urban 462.57 788.54 818.07 686 832.87 0 200 400 600 800 1000 1200 1400 Percapitarealbeanexp Figure 2: Per capita real bean expenditures (UGX) in the past 7 days, per wealth quintile, Rural and Urban Uganda
  4. 4. Estimates of Bean Adaptability Now and in 2050 Current adaptability The “do-nothing” scenario Julian Ramirez
  5. 5. What is our strategy? • Defense? • …or go on the Offensive? • “The best defense is a good offence.”
  6. 6. Phaseolus spp. originated over a range of ecological niches SECONDARY Pool • coccineus • dumosus • costaricensis Disease resistance Large biomass Root systems TERTIARY Pool • acutifolius • parvifolius Drought tolerance Heat tolerance Pest res. Good HI Common Bean HUMID-SUB HUMID SUB-HUMID to DRY ARID
  7. 7. High Temperature Research Sites Caribia Motilonia Turipaná STATIONS Armero
  8. 8. Interspecific lines– Armero, Tolima, Colombia SEF 14 SEF 43 SEF 60 Pollen viability: 83.54%
  9. 9. Antera SER 16 Antera G 40001 (Phaseolus acutifolius) Polen G 40001 Viabilidad > 90% Polen SER 16 Viabilidad entre 20 – 30 % Heat Stress on Anthers and Pollen Viability
  10. 10. Pollen Viability With and Without Heat Stress
  11. 11. SEF 28 SEF 60 Armero – CIAT - 2013 Heat Stress Effects on Grain Filling
  12. 12. New High temperature facility Nestor Chavés; José Polanía
  13. 13. What is our strategy? • Defense? • …or go on the Offensive? • “The best defense is a good offence.”
  14. 14. Estimates of Bean Adaptability with Heat Tolerant Beans with 3oC advantage Current adaptability The “do-nothing” scenario Plus 3 degrees adaptation
  15. 15. 40 years of bean research at CIAT ’75 ’80 ’85 ’90 ’95 ’00 Resistance to biotic constraints Tolerance to drought Tolerance to high aluminum and low phosphorus Research on genetic resources DNA technology Nutritional quality ’05 ’10 Improving biological nitrogen fixation ’15 Heat tolerance
  16. 16. F1’s of Common bean x Sister spp. Santos Barrera; Roosevelt Escobar
  17. 17. Threats of Excess Rainfall David Arango

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