the applied texture to the faces not showing in on screen or render
 

hello
I have a model of human body which already had a texture and material and it was working fine
then I removed the head part and combined a new head to it and also I joint the vertex as well.
now the texture on the head shows up in screen and the render with no problem. but the body doesn't show the texture in any case (in the window or after render) here is a pic to show how it looks