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Chinese Agricultural Science Bulletin ›› 2025, Vol. 41 ›› Issue (10): 7-17.doi: 10.11924/j.issn.1000-6850.casb2024-0454

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Research Progress on Live Haploid Breeding of Maize

ZHANG Jun1(), WU Juanjuan2(), LUO Zhexi3   

  1. 1 Syngenta Seeds (Beijing) Co., Ltd., Guangzhou 510000
    2 Seed Station of Nanping City, Fujian Province, Nanping, Fujian 354200
    3 Guangdong Xianmei Seed Co., Ltd., Guangzhou 510000
  • Received:2024-07-10 Revised:2024-10-28 Online:2025-04-05 Published:2025-04-03

Abstract:

This study aims to systematically summarize the application of maize live haploid technology in maize molecular breeding, with focus on exploring the selection methods, formation mechanisms, identification methods, doubling methods, and application in population improvement of maize live haploid high-frequency induction lines, providing reference and guidance for the large-scale application of live haploid breeding technology. This study used a literature review method to summarize the relevant research results and practical experience on maize haploid technology, and analyzed the advantages and disadvantages of various methods in practical applications. The research results indicated that maize live haploid technology played an important role in breeding excellent inbred lines and population improvement. Through high-frequency induction line breeding, a large number of excellent haploid plants had been successfully obtained; the identification and doubling methods effectively improved haploid formation and stability. The live haploid technology had shown significant doubling effects in population improvement, providing new ideas and methods for maize breeding. In summary, maize live haploid technology is an efficient and rapid breeding method with broad application prospects. In the process of corn breeding, combining live haploid technology can accelerate the pace of quality improvement and yield increase, providing strong support for the healthy development of the corn industry.

Key words: corn, live haploid, breeding, formation mechanism, identification, double, molecular breeding, excellent inbred lines, population improvement