Agricultural Research Service – Joint site for Departments in Land-Grant Universities and the U.S. Department of Agriculture – Agricultural Research Service (USDA-ARS). A general topics site.

Agriom BV – Site developed by Agriom BV, a Dutch ornamental plant breeding company, and describes their services.

Wiley Books – A commercial site developed by John Wiley and Sons and describes their for-sale books on many aspects of agriculture, including plant breeding and genetics.