Blackcurrant material from the gooseberry ("Ribes grossularia"), the red currant ("Ribes rubrum") and the flowering currant ("Ribes sanguineum"). The resulting offspring were further back-crossed to "R. nigrum". Cultivars produced include 'Tisel' and 'Tiben' in 2000 and 'Ores', 'Ruben' and 'Tines' in 2005. Further cultivars 'Polares' and 'Tihope' are being tested. Since 1991, New Zealand has become an important centre for research and development, as its temperate climate is particularly suitable for cultivation of the crop. Breeding programmes are concentrating on yield, large fruit size, consistency of cropping and upright habit. In North America, there is a need for this fruit to
Ribes viburnifolium green and shiny on their top surfaces, and lighter green or yellowish and leathery on the undersides. The leaves have glands which exude a sticky, citrus-scented sap. Clusters of deep red flowers bloom in late winter and into early spring. The plant yields small red fruits later in the spring. Ribes viburnifolium Ribes viburnifolium, is an uncommon North American species in the gooseberry family. It is known by the common names Catalina currant, Santa Catalina Island currant, island gooseberry and evergreen currant. "Ribes viburnifolium" is found in Southern California in the United States, especially on Santa Catalina Island in the