You can get your bachelor's degree in anything and be able to apply for PT school.
I would imagine though that most people who apply to pt school have their bachelor's in exercise science, kinesiology, or biology.
If it were me, I would major in one of those three, if they have any of them. If so, it might better prepare you for pt school. The prerequisites will also be sufficient in preparing you, but majoring in one of those might make you more familiar with medical terminology or something like that.
if they do not have one of those three majors, I would major in something as closely related as possible and not have a minor. I do not think it will make a difference whether you have a minor or not in a related field as long as you get good grades in your actual major and in the prerequisites. Not having the minor will also allow you to have more time to do extracurriculars, volunteer work, ect... to make you a more rounded applicant.
If they do not offer any majors that are more related, you can get your degree in anything. You could even get your degree in theater or dance if you wanted to, and you would still be able to apply for any pt schools. Good luck!