Quince Rumo

Introduced at the North Caucasus Regional Institute of Horticulture and Viticulture (Krasnodar) from a cross between varieties Ahmed Zhum and Krasnodarskaya Kruynaya. Breeders: S. F. Rusak, N. V. Mozhar. Undergoes state and field testing in the North Caucasus region; widely used in amateur horticulture.

Medium-sized tree, with a broad pyramidal crown of moderate density. Main branches emerge from the trunk at a 40-45° angle; bark is dark with brownish striped lenticels, giving it a reddish appearance.

Medium-length shoots, dark brown, ends slightly hairy; lenticels medium-sized, sparsely arranged, brown; buds elongated, smooth, pressed. Leaves large, elongated, slightly pointed, dark green, thin, rigid, almost hairless, slightly fringed, with coarse venation. Leaf blade medium-sized, curved upward; leaf margin entire, petiole long, medium thickness, strongly colored, coloring extends halfway along the leaf blade on both sides.

Flowers large, deep cup-shaped, pink, fragrant; petals oval, medium-sized.

Fruits large (350 g) or very large; fruit surface slightly pitted, skin oily and rough, yellow-orange coloration, fine grayish hairs on surface that disappear upon ripening. Calyx closed, sepals small, tightly pressed; receptacle wide and deep with large folds, upper edge of receptacle nearly smooth, no sharp projections. Funnel small, wide, with a ring-like protrusion, no rusting.

Flesh creamy, juicy, sour-sweet (dominated by acidity), pleasant, firm, slightly fibrous near the core, with stone cells forming a ring away from the seed cavity, seed cavity walls easily detach.

Fruits contain 13.7% soluble solids, 8.7% sugars, 1.07% titratable acids, 13.4 mg/100g ascorbic acid, 188.0 mg/100g raw mass of P-active catechins.

Fruits ripen in the third decade of September and can be stored for 60-90 days. Good transportability. In processing, yield high-quality products (4.5-5 points).

Trees begin fruiting in the 3rd-4th year after planting. Annual fruiting, yield 120-160 centners/ha. High drought and cold resistance, resistant to fungal diseases.

Advantages of the variety: early fruiting, drought resistance, storability, and high technological quality of fruits.