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\hypersetup{pdftitle={Domestication Strategy for the Underutilised Agroforestry Species Ackee (\textit{Blighia sapida} K.D. Koenig) in Benin},pdfauthor={Marius R. M. Ekué, Reiner Finkeldey},pdfsubject={Tropentag 2010: Abstract},pdfkeywords={Ackee, AFLP, agroforestry, Benin, Blighia sapida, chloroplast microsatellites, genetic variation, indigenous knowledge, nuclear microsatellites, tree and fruit morphology, tree domestication, underutilised species},pdfpagemode=None,colorlinks=true}
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\parbox[b]{13.4cm}{\centering \large{\textbf{Tropentag, September 14-16, 2010, Zurich}}\\[1ex] \Large{``World Food System  ---\\A Contribution from Europe''\\[2ex]}}
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\Large{\textbf{Domestication Strategy for the Underutilised Agroforestry Species Ackee (\textit{Blighia sapida} K.D. Koenig) in Benin\footnote{\textbf{Contact Address:} Marius R. M. Ekué, Georg-August-Universität Göttingen, Forest Genetics and Forest Tree Breeding - Büsgen Institute, Büsgenweg 2, 37077~Göttingen, Germany, \mbox{e-mail}: \email{mrekue@gmail.com}}\\[0.8ex]}}
\normalsize{\textsc{Marius R. M. Ekué, Reiner Finkeldey}}
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\begin{itemize*}
\item[]{\small{\textit{Georg-August-Universität Göttingen, Forest Genetics and Forest Tree Breeding - Büsgen Institute, Germany}}}
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\index[author]{Ekué, Marius R. M.}
\index[author]{Finkeldey, Reiner}
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\textbf{Abstract}
\begin{abstract}
\normalsize{
\textit{Blighia sapida} is a multipurpose fruit tree species native to the Guinean forests of West Africa. The fleshy arils of the ripened fruits are edible. Seeds and capsules of the fruits are used for soap"=making and all parts of the tree have medicinal properties. Although so far overlooked by researchers in the region, the tree is highly valued by farmers and is an important component of traditional agroforestry systems in Benin. Fresh arils, dried arils and soap are traded in local and regional markets in Benin providing substantial revenues for farmers, especially women. Recently, ackee has emerged as high"=priority species for domestication in Benin but information necessary to elaborate a clear domestication strategy is still very sketchy. Using a multidisciplinary approach combining farmer's indigenous knowledge and perception of variation taking into account the difference among ethnic groups and gender, the morphological variability in tree and fruit traits in relation to the environment, and the genetic structure (using AFLPs, nuclear and chloroplast microsatellites markers) of wild and cultivated populations; strategy for sustainable domestication and conservation of ackee genetic resources are proposed. 7 zones can be considered for germplasm collection: 2 in the Guinean zone, 3 in the transition Guineo-Sudanian zone and 2 in the Sudanian zone. Within each zone, two villages could be chosen for an initial collection. In each of the 14 villages, fruits should be collected from 15 to 20 fruiting trees with the helps of farmers based on traits important to them. Fruits size is the first criterion to select elite tree for germplasm collection, but other traits such as aril taste and aril colour are also important for long"=term storage. The development of vegetative propagation techniques should be done in 7 pilot nurseries established each between the two villages selected in each zone and farmers should be involved in the management of the nursery. Exchange of germplasm should be limited to each zone to avoid any negative impact of mal"=adaptation and outbreeding depression that can occur. Women, men and young farmers should be involved in the identification, collection and multiplication activities of the germplasm. }

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\noindent \textbf{Keywords:} Ackee, AFLP, agroforestry, Benin, \textit{Blighia sapida}, chloroplast microsatellites, genetic variation, indigenous knowledge, nuclear microsatellites, tree and fruit morphology, tree domestication, underutilised species
\index[key]{Ackee}
\index[key]{AFLP}
\index[key]{Agroforestry}
\index[key]{Benin}
\index[key]{Blighia sapida@\textit{Blighia sapida}}
\index[key]{Chloroplast microsatellites}
\index[key]{Genetic variation}
\index[key]{Indigenous!knowledge}
\index[key]{Nuclear microsatellites}
\index[key]{Tree!and fruit morphology}
\index[key]{Tree!domestication}
\index[key]{Underutilized species}
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