In order to explore the genetic diversity of maize varieties in Sichuan Province,40 pairs of SSR primers were used to detect the DNA fingerprints of 234 varieties tested in the Sichuan Province maize complex experiment in 2021,and the SSR DNA fingerprint database was constructed.Genetic diversity analysis and DNA fingerprint analysis were conducted based on DNA fingerprints.The results showed that the polymorphism information of 234 corn varieties was higher than that of Jilin Province and the whole country.The genetic distance between fresh corn group and other corn group was the longest.The 234 corn varieties tested were different from each other.The genetic diversity of the maize varieties tested in Sichuan Province in 2021 was richer than that of the maize varieties approved by Jilin Province and the whole country in the early years,and the passing proportion of DNA fingerprint detection was higher than that of the national maize regional trial combination from 2014 to 2019.
维普
万方数据