Hua Hong 4 is a new tetraploid red-fleshed kiwifruit cultivar selected from crossbreeding. The seeding was derived from a cross between Jinshi 2 and SF0835M in 2009 at Shifang Kiwifruit base of Sichuan Province. Fine female plants were selected in 2015, grafted and propagated in 2016 and started to be observed. Varieties were selected and applied for variety rights protection in 2019. It is a tetraploid female variety with medium tree vigor, medium short villi on new shoots and weak anthocyanin coloration on growing points, short fusiform lenticels on branches and small yellow lenticels on branches Young leaf petiole adaxially anthocyanin staining, leaf tip acuminate, heart-shaped base, heart-shaped leaves into leaves. The inflorescence type is a single inflorescence, the anthocyanidin staining degree is weak at the calyx crack of the petal base. the base of the petal is arranged and overlapped, the crease of the top is very light, the color of the adaxial side is monochrome and mainly white, the color of the filament is light green, and the color of the anther is orange-yellow, style color white, horizontal state, average of each flower 40 styles. Fruit shape is oval, with a slightly blunt and convex beak shape. The calyx ring of the fruit is obvious, and the shoulder of the fruit is circular. There are no persistent sepals, and the degree of protrusion of the lenticels is weak. The skin is light brown, with a moderate amount of short hairs evenly distributed on the surface of the skin. The color is yellow-brown and and it is easy to fall off. After ripening, the skin of the fruit is light brown, and the difficulty of peeling off the skin is moderate. The outer flesh is light green, while the inner flesh is purple red. The average fruit weight is 83.7 g, maximum fruit weight is 104.3 g. Soluble solids content is 15.2%, dry matter content is 16.6%, 7.95% of total sugar, 1.56% of total acid, vitamin C content is 1.60 g∙kg-1. The fruit development period is 150 d , it matures in middle September in Deyang area of Sichuan Province and it’s a mid-mature variety. The inflorescence type belongs to a single inflorescence, and the budding ability and branching ability are strong. It is medium resistant to PSA, and the occurrence of brown spot and scale insects is light. The resistance and adaptability is strong. The fruit has long storage-life, cold storage life is 120-140 days. Suitable cultivation area is strong adaptability, generally annual average temperature﹥15℃, altitude below 1000 meters, slightly acidic soil, good air permeability soil area can be cultivated. It can be flowering and fruiting in the third year, and good yield.
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