Abstract: ‘Linglonghong’ is a new ornamental peach cultivar developed by crossbreeding ‘Yanhongzaohua’ peach as the female parent and ‘Hongshouxing’ peach as the male parent. It was initially selected in 2015 for its bright colors and early flowering time. Through artificial hybridization pollination, 30 hybrid seeds was got. In March 2017, after the flowering of 25 seedlings, excellent individual plants with specific performance were found. The initial flowering period of this individual plant was around March 14th, 8 days earlier than the check variety 'Shimahongshouxing'. The flowers were red and of high ornamental value. Subsequently, peach was used as the rootstock for grafting and propagation. In 2018, after the flowering of grafted seedlings, the budding stage, initial flowering stage, peak flowering stage, and final flowering stage was observed, the performance of flowers, leaves, fruits, and other characteristics were recorded, and flower diameter, internode length, and fruit size were measured. Through comparison, it was found that its traits were stable and consistent with the performance of the mother plant. After regional adaptability testing at three sites (including Xuchan, Zhengzhou and Luoyang) over five years from 2018 to 2022, it was finally selected in 2023.The tree posture is dwarf, with a semi open body and straight branches.Two-year average plant height is 50.7 cm, with an average crown width of 34.6 cm x 34.9 cm.The internodes are of short size, with an average length of 0.9 cm.The flowers usually grow on short branches, with an average of 36 flowers per branch. It is easy to form flowers, with moderate number of flower buds. The flower is plum blossom shaped, double petal, with an average diameter of 3.8 cm and an average number of 22 petals. The flower buds are deep red, and the petals are red. There are 10 pieces reddish brown sepals. The average number of filaments is 33, with a small amount of filaments petalizing. The anthers are yellow with pollen. There is one pistil, which are almost the same length as stamens. In Xuchang of Henan Province, the initial flowering period was on March 14th, 8 days earlier than the check variety. The peak flowering period lasted from March 18th to 27th, and the final flowering period was on early March 29th. The flowering lasts for about 15 days. The fruit was green with moderate hair. It is resistant to drought, cold and adversity. It is wide adaptability. It is suitable for planting in areas that meet the chilling requirement of 400-550 hours.Grafting methods is used for reproduction. Hard branch grafting can be used in early spring and bud grafting should be carried out before June 10th, using peach as the rootstock.It is suitable for planting with a rowing space 1 m × 1.5 m or 1 m ×2 m. In the early stage of pruning, the main focus is on cultivating tree shape, while in the later stage, the vigorous growth is controlled to promote flower bud differentiation. Before flower bud differentiation, it can be combined with watering and applying phosphorus and potassium fertilizers to improve the quality and quantity of flower buds. It has fewer pests and diseases. Strengthening lighting and ventilation can effectively reduce the occurrence of pests and diseases.
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