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The Sweetpotato Action for Security and Health in Africa (SASHA) is a five-year initiative designed to improve the food security and livelihoods of poor families in Sub-Saharan Africa by exploiting the untapped potential of sweetpotato. It will develop the essential capacities, products, and methods to reposition sweetpotato in food economies of Sub-Saharan African countries to alleviate poverty and under-nutrition.
Progress in Breeding Orange-fleshed Sweetpotato in sub-Saharan Africa Mwanga R., G. Ssemakula, B. Yada, J. Kreuze, S. Fuentes, J. Low, W. Grüneberg, E. Carey, M. Andrade, E. Lukonge, B. Kivuva, J. Ndirigwe, C. Yencho
Planet Earth Institute Spotlight Seminar: The Future of Agriculture in Africa
The Library, Royal Society of Chemistry, Burlington House, London, UK
March 15, 2017
SWEETPOTATO ACTION FOR SECURITY AND HEALTH IN AFRICA
Outline of presentation• Background, yield losses due to sweetpotato
virus disease (SPVD)• Old sweetpotato breeding cycle • Breeding for beta-carotene (orange flesh)• Progress to date
Sweetpotato Virus Disease (SPVD) Causes Significant Yield Losses (50->90%) (drought?)
Clark et al. 2012: Plant Disease
Developing populations for SPVD resistance and quality traits
Regional genotype x environment orange-fleshed sweetpotato trials, 15 Trial Sites 2006/2007
.. .. .... .
...
Serere Namulonge
KakamegaBukoba
HomboloKibaha
AngoniGurue
MandotoMimosa
Rubona Kibundu
Umbelezi
Zanzibar Kizimbani
Kacwekano
.
Not to scale
Sweetpotato seed sent from Uganda to SSA Countries in 2007/2008 (Total amount of seed: 471,405)
...
.
..
.
.
152,64037,350
10,540
32,850 90,400
21,00071,010
9,705
.
Not to scale .8,000
20,320
17,590.
Variety Selection/Breeding
Combine high beta-carotene with other major desirable traits -
Accelerated Breeding
Multiplication ratios: cassava/sweetpotato and maize
Multiply new breeding lines in screen/glass houses, irrigated fields
Use more sites at earlier stages in the breeding cycle to substitute for fewer sites over more seasons
Sweetpotato Action for Security and Health in Africa (SASHA) –from 2009 supported sweetpotato platforms
African sweetpotato breeders breed in Africa for Africa using the latest knowledge and efficient methods
12 Countries with crossing blocks/breeding
3 Countries with sweetpotato evaluation/ selection activities
Since 2009 nine countries have released 56 new superior varieties; 40 of them orange-fleshed
Thank you for your attention
Planet Earth InstituteWorld Food Prize FoundationAGRACGIAR CENTERSNARSFarmersBill and Melinda Gates FoundationOther DonorsOther partners