Breeding report of a new mango cultivar‘Jinpingmang’

Abstract:‘Jinpingmang’is a new mango cultivar selected from a single plant in a seedling populations. In the 1980s, a batch of mango seeds brought back from Malaysian Chinese in Chaozhou were found. The vegetative propagation and research were carried out by high grafting of scion. After about 20 years of regional adaptability tests in 4 locations (including Chaozhou, Guangzhou, Zhanjiang and Shanwei) from 2000 to 2019, the final selection was made. This selection has strong planting potential,strong branch tip, strong bud force, strong branch force, easy to form the crown, the crown is natural round head shape. The branches are dense and soft, easy to droop, and showing obvious dwarfing char-acter. The leaves are slender, lanceolate, young leaves are pale copper green, and older leaves are dark green and thick. Infinite panicles, easily to flowered, often with leafy flowers. The number of flowers per inflorescence was 2186-2528, and the bisexual flowers accounted for 12.13%-20.34%. The fruit is nearly round and spherical, and looks like an apple. The skin is orange, thin and easy to peel. The flesh is orange, juicy and sweet, with a strong aroma. The average single fruit weight was 380 g, the edible rate was 83.3%, the soluble solid content was 16.7%, the total sugar content was 11.2%, the total acid  content was 4.26 g·kg-1, the vitamin C content was 234 mg·kg-1 and the crude fiber content was 0.2%. In Chaozhou area, the fruity period is about 110-130 d, late ripening, and the ripening period is from mid-August to early September. The temperature during flowering had a great influence on fruit setting. The fruit was bagged and stored in cartons at room temperature. The good fruit rate was 86.67% , 60.00% and 23.33%, respectively, after 20, 25 and 30 days of storage. Use‘Honghuamang’and local native awn varieties as rootstock to cultivate and graft seedlings. Choose the gentle slope land with lee- way to the sun, good lighting conditions, convenient irrigation, fertile soil and deep soil layer for plant-ing in spring. Plant row spacing is 4 m×4 m and 45 plants are planted per 666.7 m2. Thinning out the al-ready extracted flower ears in late March, forming more concentrated flower ears again in late April,thinning out the flowers in early May, leaving 2 flower ears in strong branches, 1 ear in medium branch-es, and no flowers in weak branches. Fruit bagging, using special double-layer fruit bags with red out-side and black inside, when the transverse diameter of most fruits reaches more than 4 cm, spraying in-secticide before the bagging. Adopt measures such as fertilizer promotion, pruning after harvest and wa-ter supply by micro-sprinkling irrigation, and attack and release the autumn shoot once in October as the main result of the following year. Pay attention to the prevention and treatment of anthrax, pediculus rot, leaf spot fungus perforation, horizontal noctuid moth, leafhopper, ulna moth, gall mosquito and oth-er diseases and insect pests.