  We investigate the behavior of the resistivity around valence transition in
the one-dimensional extended periodic Anderson model (PAM) with the Coulomb
repulsion between f and conduction electron U_fc. By using 1/N-expansion in the
leading order in (1/N)^0, where N is the spin-orbital degeneracy of
f-electrons, valence transition happens at critical U_fc with increasing the
atomic f-level as seen in the previous work. We calculate the resistivity whole
temperature range around valence transition based on the extended PAM including
the crystal field and investigate how the physical properties such as Kondo
temperature is modified by additional U_fc interaction. As a result, the double
peak structure of the electrical resistivity fades away rapidly by the rapid
increase of the Kondo temperature.
