i need to know if there is a substitute for sour cream

i need to make banana bread, but most of the recipes ask for sour cream, which i don't have on hand right now.

pleease help!

4 answers

could i put yogurt?
This site has several suggestions for sour cream substitutes.

http://homecooking.about.com/od/foodequivalents/a/sourcreamequivs.htm
thank you so much :)
You're very welcome. :-)