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 speciosum leathery leaves are shallowly divided into several lobes and are mostly hairless, the upper surfaces dark green and shiny. The inflorescence is a solitary flower or raceme of up to four flowers. The flower is a tube made up of the gland-studded scarlet sepals with the four red petals inside. The red stamens and stigmas protrude far from the mouth of the flower, each measuring up to 4 centimeters (1.6 inches) long. The fruit is a red-orange berry about a centimeter (0.4 inch) long, is covered densely in glandular bristles. "Ribes speciosum" is cultivated as an ornamental plant for use