Journal of Northern Agriculture ›› 2022, Vol. 50 ›› Issue (6): 17-24.doi: 10.12190/j.issn.2096-1197.2022.06.03

• Molecular biology·Germplasm resources • Previous Articles     Next Articles

Analysis of Huang-Huai-Hai maize heterotic pattern based on SSR molecular marker technology

CHAI Wenbo, LI Shufen, LI Hongtao, XU Hanyuan, ZHU Qing, WANG Jun   

  1. Lianyungang Academy of Agricultural Sciences,Lianyungang 222000,China
  • Received:2022-10-24 Online:2022-12-20 Published:2023-03-24
  • Contact: WANG Jun

Abstract:

【Objective】Analyzing the heterotic pattern of superior maize breeding lines L239 and L7221 to reveal the genetic resources of superior varieties and to provide reference for maize breeding in the Huang-Huai-Hai region. 【Methods】The genetic diversity of L239 and L7221 in 42 maize inbred lines was analyzed by SSR molecular marker technology to determine the heterosis pattern of maize in Huang-Huai-Hai region.【Results】Analysis of 42 maize inbred lines showed that the allele number of the 56 primers was 2-9,and the polymorphism information content was 0.43-0.86. The genetic distance between L239 and CA375 was shortest at 0.50. The genetic distance between L7221,LX9801 and Nongda 178 were shorter at 0.43 and 0.56,respectively. According to the genetic similarity analysis of 42 maize inbred lines,L7221 mainly belonged to Tangsipingtou group,and L239 mainly had closer relationship with the germplasm resources of the improved Reid group.【Conclusion】L7221 was closer to many inbred lines of Tangsipingtou group,and L239 was closer to many inbred lines of improved Reid group. The L239 and L7221 heterosis pattern was improved Reid group×Tangsipingtou group.

Key words: Maize, L239, L7221, Heterotic pattern, SSR

CLC Number: 

  • S513