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\hypersetup{pdftitle={Identification of Combining Ability Patterns for Pearl Millet Hybrid Breeding in West Africa },pdfauthor={Felix Sattler, Anna Bürger, Ousmane Sy, Moussa D.  Sanogo, Ignatius I.  Angarawai, Roger  Zangre, Mahamadi  Ouedraogo, Siaka  Boureima, C. Tom Hash, Bettina I.G. Haussmann},pdfsubject={Tropentag 2016: Abstract},pdfkeywords={Heterotic pattern, panmictic midparent heterosis, pearl millet, population hybrids},pdfpagemode=None,colorlinks=true}
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\parbox[b]{13.4cm}{\centering \large{\textbf{Tropentag, September 18-21, 2016, Vienna, Austria}}\\[1ex] \Large{``Solidarity in a competing world ---\\fair use of resources''\\[2ex]}}
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\begin{center}
\Large{\textbf{Identification of Combining Ability Patterns for Pearl Millet Hybrid Breeding in West Africa \footnote{\textbf{Contact Address:} Felix Sattler, University of Hohenheim, Institute of Plant Breeding, Seed Science and Population Genetics, Fruwirthstraße 21, 70599~Stuttgart, Germany, \mbox{e-mail}: \email{felix_sattler@uni-hohenheim.de}}\\[0.8ex]}}
\normalsize{\textsc{Felix Sattler$^{1}$, Anna Bürger$^{1}$, Ousmane Sy$^{2}$, Moussa D.  Sanogo$^{3}$, Ignatius I.  Angarawai$^{4}$, Roger  Zangre$^{5}$, Mahamadi  Ouedraogo$^{5}$, Siaka  Boureima$^{6}$, C. Tom Hash$^{7}$, Bettina I.G. Haussmann$^{1}$}}
\end{center}
\begin{itemize*}
\item[]{\small{\textit{$^{1}$University of Hohenheim, Inst. of Plant Breeding, Seed Science and Population Genetics, Germany}}}
\item[]{\small{\textit{$^{2}$Institute of Agricultural Research (ISRA), Plant Production, Senegal}}}
\item[]{\small{\textit{$^{3}$Institut for rural economy in Mali (IER), Mali}}}
\item[]{\small{\textit{$^{4}$Lake Chad Research Institute, Nigeria}}}
\item[]{\small{\textit{$^{5}$Institut for environment and agicultural research in Burkina Faso (INERA), Burkina Faso}}}
\item[]{\small{\textit{$^{6}$International Crops Research Institute for the Semi-arid Tropics (ICRISAT), Niger}}}
\item[]{\small{\textit{$^{7}$International Crops Research Institute for the Semi-arid Tropics (ICRISAT), India}}}
\end{itemize*}
\index[author]{Sattler, Felix}
\index[author]{Bürger, Anna}
\index[author]{Sy, Ousmane}
\index[author]{Sanogo, Moussa D. }
\index[author]{Angarawai, Ignatius I. }
\index[author]{Zangre, Roger }
\index[author]{Ouedraogo, Mahamadi }
\index[author]{Boureima, Siaka }
\index[author]{Hash, C. Tom}
\index[author]{Haussmann, Bettina I.G.}
\begin{center}
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\textbf{Abstract}
\begin{abstract}
\normalsize{
Pearl millet (\textit{Pennisetum glaucum} (L) R. Br.) is being cultivated in India and sub-Sahara Africa as a staple crop. Especially in West Africa (WA) it is important for food security for smallholder farmers in rural areas. In contrast to India, breeding of hybrid varieties is still limited in WA. The objectives of this study were to evaluate combining ability, heterotic patterns and heterosis effects of WA pearl millet based on population hybrids, and to derive conclusions for developing future hybrid breeding programs.



A 10 $\times$ 10 factorial mating design was performed with twenty diverse parental populations from five different WA countries. The 100 population hybrids and their parents were phenotyped at six locations. To validate and extend the results of the factorial design, 16 populations were intercrossed in a diallel mating design. Those population hybrids were evaluated together with their parents at four locations.



Results of the factorial design showed for grain yield an average panmictic midparent heterosis (PMPH) of \mbox{16.7\,\%}, ranging from -26 to \mbox{73\,\%}. The mean grain yield of hybrids based on inter"=country crosses did not differ significantly from intra"=country crosses. Predictability of population hybrid performance for grain yield was moderate based on midparent values (r=0.43) and slightly better for GCA (r=0.56). While preparing the abstract, data analysis for the diallel mating was still underway. 



Results obtained so far indicate great potential for pearl millet hybrid breeding in WA. However, the present results and other diversity studies indicate that natural heterotic groups do not exist. A systematic development of groups by combining ability studies is therefore required. Our study represents a first step to identify combining ability patterns and initial heterotic pools for pearl millet hybrid breeding in WA.
}

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\end{abstract}
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\noindent \textbf{Keywords:} Heterotic pattern, panmictic midparent heterosis, pearl millet, population hybrids
\index[key]{Heterotic pattern}
\index[key]{Panmictic midparent heterosis}
\index[key]{Pearl millet}
\index[key]{Population hybrids}
\end{document}
