Breeding Blueberries for Low-Chilling Requirement1

The true blueberries of the genus Vaccinium L., subgenus Cyanococcus Kl, as described by Camp (4), are predominantly a North American group, although some Asiatic species are included. More distantly related groups are found on the Pacific coast, such as V.ovatum Pursh, and in tropical America, Africa and other areas of the world. Additional Vaccinium relatives include the sugenera Polycodium Raf., the deerberries, and Batodendron Nutt, the Farkleberry or Tree or Winter-huckleberry, and the genus Gaylussacia H.B.K., the huckleberries.