Journal of Northern Agriculture ›› 2020, Vol. 48 ›› Issue (2): 21-26.doi: 10.12190/j.issn.2096-1197.2020.02.04

• Corp cultivation·Molecular biology • Previous Articles     Next Articles

Genetic transformation system of maize inbred line H99 with agrobacterium-mediated glyphosate resistance gene

HAN Ping′an1, WU Xinrong1, SUN Ruifen1, SHI Haibo2, XUE Chunlei2, CHANG Yue1, TANG Kuangang1, LIANG Yahui1, REN Qinyong1, LI Xiaodong1   

  1. 1. Biotechnology Research Center,Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,Hohhot 010031,China;
    2. Maize Research Institute,Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,Hohhot 010031,China
  • Received:2020-02-21 Online:2020-04-20 Published:2020-07-17

Abstract: 【Objective】Breeding herbicide-resistant maize cultivars by transgenic method to solve the problem of grass damage.【Methods】Genetic transformation was conducted on immature embryos of maize inbred line of H99 by agrobacterium-mediated method, which was carry out single factor test, the different size of immature embryo, concentration of agrobacterium and co-culture time were set respectively, which was compared and analyzed based on GUS transient expression rate in transgenic embryos.【Results】The results showed that the GUS transient expression rate was the highest when the size of the immature embryo was 1.5-2.0 mm, the concentration of agrobacterium OD600 was 0.4, the co-culture time was 3 d and the infection time was 5 min. PCR detection proved that 7 positive transgenic seedlings were successfully obtained, and phenotypic identification also demonstrated that transgenic seedlings were capable of resistance to glufosinate.【Conclusion】This study provides a reference for the optimization of improving maize transgenic technology system and the breeding of new herbicide-resistant varieties.

Key words: Maize, Glyphosate resistance gene(EPSPS), Agrobacterium mediated method, Genetic transformation, GUS staining

CLC Number: 

  • Q943.2