documentclass{article}
usepackage{tikz}
usepackage{tikz-qtree}
begin{document}
begin{tikzpicture}
tikzset{grow'=right, level distance=32pt}
tikzset{execute at begin node=strut}
tikzset{every tree node/.style={anchor=base west}}
Tree [ [.J [.J ] [.S ] ]
[.S [.J ]
[.S ] ] ] ]
end{tikzpicture}
end{document}