Dr Peter Setimela, DTMA (Drought Tolerant Maize for Africa), CIMMYT
-
Upload
catchtalktv -
Category
Business
-
view
90 -
download
1
description
Transcript of Dr Peter Setimela, DTMA (Drought Tolerant Maize for Africa), CIMMYT
![Page 1: Dr Peter Setimela, DTMA (Drought Tolerant Maize for Africa), CIMMYT](https://reader034.fdocuments.us/reader034/viewer/2022051400/54c3714f4a7959a1188b45ad/html5/thumbnails/1.jpg)
DR PETER SETIMELA DTMA CIMMYT
![Page 2: Dr Peter Setimela, DTMA (Drought Tolerant Maize for Africa), CIMMYT](https://reader034.fdocuments.us/reader034/viewer/2022051400/54c3714f4a7959a1188b45ad/html5/thumbnails/2.jpg)
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](https://reader034.fdocuments.us/reader034/viewer/2022051400/54c3714f4a7959a1188b45ad/html5/thumbnails/3.jpg)
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](https://reader034.fdocuments.us/reader034/viewer/2022051400/54c3714f4a7959a1188b45ad/html5/thumbnails/4.jpg)
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](https://reader034.fdocuments.us/reader034/viewer/2022051400/54c3714f4a7959a1188b45ad/html5/thumbnails/5.jpg)
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](https://reader034.fdocuments.us/reader034/viewer/2022051400/54c3714f4a7959a1188b45ad/html5/thumbnails/6.jpg)
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](https://reader034.fdocuments.us/reader034/viewer/2022051400/54c3714f4a7959a1188b45ad/html5/thumbnails/7.jpg)
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](https://reader034.fdocuments.us/reader034/viewer/2022051400/54c3714f4a7959a1188b45ad/html5/thumbnails/8.jpg)
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](https://reader034.fdocuments.us/reader034/viewer/2022051400/54c3714f4a7959a1188b45ad/html5/thumbnails/9.jpg)
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](https://reader034.fdocuments.us/reader034/viewer/2022051400/54c3714f4a7959a1188b45ad/html5/thumbnails/10.jpg)
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](https://reader034.fdocuments.us/reader034/viewer/2022051400/54c3714f4a7959a1188b45ad/html5/thumbnails/11.jpg)
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](https://reader034.fdocuments.us/reader034/viewer/2022051400/54c3714f4a7959a1188b45ad/html5/thumbnails/12.jpg)
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](https://reader034.fdocuments.us/reader034/viewer/2022051400/54c3714f4a7959a1188b45ad/html5/thumbnails/13.jpg)
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](https://reader034.fdocuments.us/reader034/viewer/2022051400/54c3714f4a7959a1188b45ad/html5/thumbnails/14.jpg)
Thank you