Evaluation subgroups of a map and the rationalized G-sequence

In this paper, we determine, in terms of the Sullivan models, rational evaluation subgroups inclusion $ \mathbb{C} P(n)\hookrightarrow P(n+k) between complex projective spaces and, more generally, G $-sequence homotopy monomorphism \iota: X\hookrightarrow Y simply connected formal homogeneous for which \pi_{\ast}(Y)\otimes \mathbb{Q}$ is finite dimensional.