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DR PETER SETIMELA DTMA CIMMYT

Dr Peter Setimela, DTMA (Drought Tolerant Maize for Africa), CIMMYT

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Page 1: Dr Peter Setimela, DTMA (Drought Tolerant Maize for Africa), CIMMYT

DR  PETER  SETIMELA  DTMA  CIMMYT  

 

Page 2: Dr Peter Setimela, DTMA (Drought Tolerant Maize for Africa), CIMMYT

Breeding  and  dissemina6on  of  drought    tolerant  maize  in  Eastern  and  Southern  

Africa    Peter  Se6mela,  Tsedeke  Abate,  John  MacRobert,  Jill  E  Cairns,  Cosmos  Magorokosho,  Amsal  Tarekegne,  Dan  Makumbi  and  BM  Prasanna  

Page 3: Dr Peter Setimela, DTMA (Drought Tolerant Maize for Africa), CIMMYT

Improving  maize  produc6vity  in  Eastern  and  Southern  Africa  

•  Popula/on  in  SSA  will  double  by  2045  

•  Maize  yields  remain  very  low  under  smallholder  farmers  

Cairns et al., 2012

•  Climate  change  predic/ons  suggest  large  losses  in  maize  produc/on  in  Southern  Africa  

à Increased emphasis on drought tolerance breeding since 2006

Page 4: Dr Peter Setimela, DTMA (Drought Tolerant Maize for Africa), CIMMYT

DTMA  Projects  Targets  

70,000  tons  drought  tolerant  maize  seed  produced  by  2016  

Benefit  30-­‐40  M  people  (150-­‐200  M  USD)  

Increase  maize  yields  under  drought  stress  by  1  t  ha-­‐1  

Page 5: Dr Peter Setimela, DTMA (Drought Tolerant Maize for Africa), CIMMYT

Drought

Low N

Breeding  for  drought    tolerant  maize  and  other  abio6c  stresses  through  managed  stress  

NOT:  to  simulate  a  farmer’s  field  

BUT:  to  simulate  a  stress  that  has  a  high  probability  of  occurring  in  farmers’  fields  

Page 6: Dr Peter Setimela, DTMA (Drought Tolerant Maize for Africa), CIMMYT

 Post-­‐flowering  drought  stress  ●     Top  leW:  /me  of  last  irriga/on  ●     Top  right:  crop  aMer  flowering  ●     Right:  genotypic  differences  

Page 7: Dr Peter Setimela, DTMA (Drought Tolerant Maize for Africa), CIMMYT

Prigge  et  al.  2011,  2012;  Prasanna  et  al.  2013  

Product  development  

Doubled  haploid  facility  

Grain  yield  (t  ha-­‐1)  Op/mal   Drought  

CZH1157   6.70   3.08  CZH10250   6.52   2.79  CZH1237   6.34   3.09  Commercial  1   6.31   2.67  Commercial  2   4.84   1.48  Loca/ons   10   3  

Page 8: Dr Peter Setimela, DTMA (Drought Tolerant Maize for Africa), CIMMYT

Product  validation   Yield  rela/ve  to  SC513  (t  ha-­‐1)  

Low  yielding  trials  (<3  t  ha-­‐1)  

Average  yield  -­‐    1.83  t  ha-­‐1  

High  yielding  trials  (>3  t  ha-­‐1)  

Se/mela  et  al.  2012  

Page 9: Dr Peter Setimela, DTMA (Drought Tolerant Maize for Africa), CIMMYT

Documen6ng  gene6c  gains  

Op6mal  condi6ons  es6mated  gains  =  196  kg  ha-­‐1  yr-­‐1  

Drought  condi6ons  es6mated  gains  =  85  kg  ha-­‐1  yr-­‐1  

o  66  varie/es  (3  commercial  checks;  1999,  2003,  2010)  o  34  loca/ons    (22  in  Southern  Africa  and  12  in  Eastern  Africa)  

Masuka  et  al.  unpublished  

Page 10: Dr Peter Setimela, DTMA (Drought Tolerant Maize for Africa), CIMMYT

Facilita6ng  farmers’  access  to  drought  tolerant  maize  

117  new  varie6es  released    (60  hybrids,  57  OPVs),  51  seed  companies  growing  DT  varie6es    

Seed  produc6on  of  drought  tolerant  varie6es  

Varie/es  

Produc/on  (t)  

Page 11: Dr Peter Setimela, DTMA (Drought Tolerant Maize for Africa), CIMMYT

Promo6ng  Variety  Adop6on  • Variety  Demonstra/ons  conducted  widely  •  Field  days  by  seed  companies  • Posters  and  seed  packaging  •  S/ll  much  to  be  done  to  increase  demand  

Page 12: Dr Peter Setimela, DTMA (Drought Tolerant Maize for Africa), CIMMYT

Projected  Seed  Produc6on  of  New  DT  Maize  Varie6es  

0

10

20

30

40

50

60

70

80

2008 2009 2010 2011 2012 2013 2014 2015 2016

Seed

Pro

duct

ion/

1000

t

Page 13: Dr Peter Setimela, DTMA (Drought Tolerant Maize for Africa), CIMMYT

Conclusions  •  Gains  are  being  made  in  farmers  fields  in  ESA  

•  Highly  drought  tolerant  lines  iden/fied  for  breeding  pipeline  •  Efficiency  of  maize  breeding  pipeline  in  ESA  is  being  improved  

•  Reducing  plot  noise  •  Double  haploid  technology  •  Associa/on  mapping  

•  New  number  of  seed  companies  are  being  established  to  produce  and  disseminate  DT  varie/es  

•  Old  varie/es  are  slowly  being  replaced  with  new  ones.    

Page 14: Dr Peter Setimela, DTMA (Drought Tolerant Maize for Africa), CIMMYT

Thank  you