The Classification of Maize Inbred Lines by SRAP Marker Technology

In the study,48 maize inbred lines were used to determine the genetic diversity and divide different heterosis populations by SRAP molecular markers.The results showed that 48 inbred lines were classified into six groups, which was consistent with the pedigree origin.Average genetic similarity coefficients among groups were smaller than that within groups.In addition,many of the parents of the hybrid combinations planted widely came from different groups.This suggested that the classified results by SRAP markers was reasonable and was also valuable for classification of maize heterosis population.To further classify the heterosis groups and heterosis patterns by combing SRAP marker with field experiment would be discussed in the paper.