A Review of Interspecific Hybridization in Rubus

Abstract

The genus Rubus has had considerable study, and reviews of the breeding work have been through (12, 68, 69, 76, 84). Although much progress has been made, all authors agree more is possible. This paper covers some of the successes, problems, and techniques used in the crossing of various species of Rubus . The basic chromosome number in Rubus is x = 7, and Rubus species range from 2x to 12x. Rubus species are found worldwide, from the tropics to above the Arctic Circle, offering a vast resource of germplasm for breeding purposes.