We obtain non-radial bifurcation from radial solutions of a semilinear elliptic equation in expanding annuli of
\(\mathbb {R}^N\). To obtain the main results, we use a blow-up argument via the Morse index of the regular entire solutions of the equation
$$\begin{aligned} -\Delta u=\lambda u^p \quad \text {in}\quad \mathbb {R}^N. \end{aligned}$$
(0.1)
The main results of this paper can be seen as applications of the properties of regular entire solutions of (
0.1).