We prove a relation between the $\bar{\partial}_{M}$ cohomology of
a minimal orbit of M of a real form of $\mathbf{G}_{0}$ of a complex
semisimple Lie group $\mathbf{G}$ in a flag manifold $\mathbf{G}/\mathbf{Q}$
and the Dolbeault cohomology of the Matsuki dual open orbit X of the
complexification $\mathbf{K}$ of a maximal compact subgroup $\mathbf{K}_{0}$
of $\mathbf{G}_{0}$, under the assumption that M is Levi-flat.
