Farmer or folk crop varieties developed over many generations by indig
enous farmers are an important component of global crop genetic resour
ces for use by both industrial and indigenous agriculture. Currently t
here is a debate between advocates of indigenous farmers' rights in th
eir folk varieties and the dominant world system, which vests intellec
tual property rights to crop genetic resources only in users of those
resources for industrial agriculture. While indigenous peoples at the
individual and group levels do have a broad range of intellectual prop
erty rights in their folk varieties, they define and use them differen
tly than does the industrial world. Therefore, industrial-world intell
ectual propery rights mechanisms are generally inappropriate for prote
cting the intellectual property rights of indigenous farmers, but some
could be used effectively. To meet indigenous farmers' need for prote
ction, new approaches are being developed that embed indigenous farmer
s' rights in folk varieties in cultural, human, and environmental righ
ts. More research on the cultural, social, and agronomic roles of folk
varieties, ongoing negotiation of the meaning of key concepts such as
''crop genetic resources,'' ''rights,'' and ''indigenous,'' and an em
phasis on a common goal of sustainability will help to resolve the deb
ate.