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 cereum to form a corolla-like structure. Inside there are minute white or pinkish petals, five stamens, and a two protruding green styles. The fruit is a rather tasteless red berry up to a centimeter (0.4 inch) wide, with a characteristically long, dried flower remnant at the end. The Zuni people use the berries of the "pedicellare" variety as food, and eat the leaves with uncooked mutton fat or deer fat. Ribes cereum Ribes cereum is a species of currant known by the common names wax currant and squaw currant ("R. c." var. "pedicellare" is known as whisky currant). It is native