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A new kernel-used apricot cultivar Jingren 5 by distant hybridization

Date:2024/4/19 17:43:20 Visit:

Kernel-used apricot is outstanding in its resistance to cold, drought and barrenness. It is widely applied in the ecological environment construction of the Three North region in China, and plays an irreplaceable role in the agricultural economy development and natural environmen protection of the mountainous areas. Kernel-used apricot industry has a huge scale and potential in China. Compared to foreign excellent almond cultivars, the yield and the average single kernel mass of the main cultivated kernel-used apricot in China are both lower. However, the planting areas of almond are very limited for the difficulty in adapting to climate and environmental conditions in China. In order to get a new germlpasm combining advantage of almond and kernel-used apricot in the yield, the quality of kernel, the multi-resistance and wide adaptability, we conducted distant hybridization between kernel-used apricot and almond and obtained F1 progenies. Through evaluation and selection of the hybrid progenies for many years, a series of new varieties of kernel-used apricot were bred including Jingren 5. Jingren 5 derived from the cross of Longwangmao × Italy 2 and as a new cultivar released finally. The plant variety right was granted by the National Forestry and Grassland Administration in April 2023. The fruit of Jingren 5 was ovoid with convex apex and the fruit with yellow ground color and red color on sunny side when mature. The shell was ovoid with smooth shell surface and plump kernel. The average longitudinal diameter, transverse diameter and side diameter of the single shell was 3.28 cm, 2.12 cm and 1.23 cm respectively, and the fresh shell weight 2.54 g. The kernel was sweet and large with average single fresh weight 1.05 g, dry weight 0.90 g, the average longitudinal diameter, transverse diameter and side diameter ofsingle kernel was 2.19 cm, 1.40 cm and 0.74 cm respectively. The kernel contains fat 435.63 g·kg-1, protein 269.84 g · kg-1, Ca 1.26 g · kg-1 and Fe 24.08 mg· kg-1. The shelling percentage was 37.02 %. In Pinggu district of Beijing, the full-bloosom from late March to early April, with the flowering period of 5-7 days; the leaf expansion in mid-to-late April; the fruit ripening in mid-to-late July, the fruit development period was about 105 days; the leaf falling in mid-to-late November, an annual growth period lasted about 220 days. Jingren 5 had strong sprouting power and started to bear fruit in the second year after high grafting. It had good yield and stability without biennial fruiting. For its poor self-flowering ability, the pollinator trees were necessary when planting.




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