Blackcurrant, formerly known as black currant, alias: black currant, dried grape, black bean, black currant, Hari-Hada, Latin scientific name: Ribes nigrum L. Saxifragaceae. Black currant is a deciduous erect shrub with dark gray or grayish brown branchlets and hairless young branches. The buds are ovoid or ovoid, and the fruits are rich in vitamins, sugars and organic acids, especially vitamin C, which are mainly used to make jam, fruit wine and drinks.

morphological character

Black currant is light-loving, cold-resistant, barren-tolerant and has developed roots. Fruit can be seen in the second year of planting, and it will enter the full fruit stage in the fifth year.

Its mature fruit is a small black berry, which is rich in vitamin C and anthocyanins and is edible. It can also be processed into fruit juice, jam, canned food, beverage and other foods. The known health care functions of blackcurrant are: preventing gout, anemia, edema, arthritis, rheumatism, oral and throat diseases and cough, and having good effects on cardiovascular and cerebrovascular diseases, hypertension and hyperlipidemia.

It is an erect deciduous shrub with a height of1-2m; Branchlets are dark gray or grayish brown, glabrous, the skin is usually undivided, young branches are brown or brownish, with different densities of pubescence, yellow glands and no thorns; The buds are ovoid or oval, (3) 4-7 mm long and 2-4 mm wide, with sharp tips, several yellowish brown or brown scales, pubescent and yellow glands. The leaves are nearly round, 4-9 cm long, 4.5- 1 1 cm wide, heart-shaped at the base, dark green at the top, slightly pubescent when young, deciduous when old, with pubescent and yellow glands at the bottom, palmately 3-5-lobed, broadly triangular lobes, sharp tips, slightly longer than lateral lobes, and irregular rough and sharp edges; Petiole length 1-4 cm, pubescent, occasionally glandular hairy, sometimes with a small amount of feathery hairs at the base. Flowers bisexual, 5-7 mm in diameter when flowering; The raceme is 3-5 (8) cm long, drooping or bending, with 4- 12 flowers; Inflorescence rachis and pedicels pubescent, or mixed with sparse yellow glands; Pedicel 2-5 mm long.

Rice; Bracts are small, lanceolate or ovoid, long 1-2 mm, sharp at the top and pubescent; Calyx yellow-green or pale pink, pubescent and yellow gland; Calyx tube nearly bell-shaped, long 1.8-3.3 mm, wide 3-4 mm; Sepals are tongue-shaped, 4-5 mm long and 1.5-2 mm wide, and the tip is blunt, spreading or reflexed; Petals are ovoid or ovoid-elliptic, 2-3mm long,1-1.5mm wide, and the apex is obtuse; Stamens are as long as petals, anthers are ovoid and have nectaries; Ovary sparsely pubescent and glandular; Style slightly shorter than stamens, apex 2-lobed, sparsely undivided. The fruit is nearly round, with a diameter of 8- 10 (14) mm, black at maturity and sparse glands. The flowering period is from April to June, and the fruiting period is from July to August.

Blackcurrant is rich in vitamin C, phosphorus, magnesium, potassium, calcium, anthocyanins and phenols. The known health benefits of blackcurrant include preventing gout, anemia, edema, arthritis, rheumatism, oral and throat diseases, cough and so on.