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Chinese Agricultural Science Bulletin ›› 2026, Vol. 42 ›› Issue (8): 17-22.doi: 10.11924/j.issn.1000-6850.casb2025-0687

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New Dual-purpose Sweet Potato Variety 'Funingshu NO.24' with Multi-resistance: Screening and Virus-free Seedling Breeding

JIANG Yuanbin()   

  1. Institute of Agricultural Sciences in Ningde City, Ningde, Fujian 355017
  • Received:2025-08-21 Revised:2025-12-11 Online:2026-04-25 Published:2026-04-23

Abstract:

The aim is to breed a new dual-purpose type sweet potato variety with multi-resistance, and provide good variety support for the vigorous development of sweet potato industry in Fujian Province. 'Funingshu NO.24' is a new sweet potato variety with high yield, disease resistance and wide adaptability, which was bred by sexual hybridization of 'Fushu No.24' as female parent and 'Rongzi No.2'as male parent, and through years of multi-point comparison, regional testing, and comprehensive evaluation. The results of the regional tests in Fujian Province in 2017 and 2019 indicate that the average yield of fresh sweet potato was 31853.7 kg/hm2, 6.28% higher than that of the control 'Guangshu 87', the average yield of dried sweet potato was 9288.75 kg/hm2, 3.90% higher than that of the control, and the average yield of starch was 5614.05kg/hm2, 5.25% higher than that of the control. 'Funingshu NO.24' has the characteristics of high yield, stable yield, good eating quality, resistance to vine cutting disease, moderate resistance to stem nematode disease and root rot disease. In 2023, it passed the National Non-major Crop Variety Registration, and obtained the certificate of variety right protection in 2024. This paper mainly introduces the breeding process, characteristics, quality, yield, disease resistance analysis and virus-free seedling breeding technology of 'Funingshu NO.24', which provides a reference for the popularization and application of this variety.

Key words: 'Funingshu NO.24', sweet potato, breeding, dual-purpose type, fresh food, starch processing, virus-free seedling breeding

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