The fruit has a straight heart shape, with an average single fruit weight of 8.6 grams; Pericarp purple-red to purple-black, shiny; The pulp is reddish, hard and sweet, and the soluble solid content is 18.0%, which is 3 percentage points higher than that of the control variety. It has the characteristics of self-flowering and fruiting, and the fruit development period is about 50 days. It matured in Yantai in early June, and the maturity period was concentrated.
2. Rubins
Rabins is a self-bred variety, bred in Canada, and the hybrid combination is Xianfeng× Steiner, which is one of the key varieties promoted in Canada. 1988 was introduced to Yantai City, Shandong Province. The fruit is large, with an average single fruit weight of about 8 grams. The fruit is nearly round or oval, purple, shiny and beautiful.
3. Black Pearl
The fruit is large, with an average single fruit weight of 4.5 grams. The fruit is nearly round in shape, and the top is papillary. The skin is thick, the waxy layer is thick, the background color is red, the fruit surface is purple-red, and it is purple-black when it is fully mature, and its appearance is as bright as pearls. Semi-detached, the edible rate is 90.3%. In Chongqing, 65438+1germinates from late October to early February, blooms in late February, matures in late April, and leaves fall in late October.
4. Sunny sun
The fruit is large, and the average single fruit weight is about 13g, which is round. The length of fruit stalk is moderate. The peel is dark red and shiny. The pulp is sweet and juicy, with low acidity, soft texture and excellent quality. It is resistant to storage and transportation, and its maturity is 4 ~ 5 days earlier than that of Robin.
5. Black Pearl
The first variety cultivated and popularized by Cornell University for growers on the west coast of the United States, its flavor is better than that of Santina and Teton, and its meat is hard and crisp.
Suitable rootstocks: Krymsk5, Krymsk6, M×M. 14.
Recommended trees: KGB tree, UFO tree, semi-erect multi-branch tree.