Identification of Sichuan cattle and its parents by RAPD primers.

To identify the relationship of the Sichuan cattle and its parents,6 primers were screened from the 50 random primers to amplify the Sichuan cattle and its parents.334 bands were amplified.Cluster analysis results displayed that the genetic background among the 4 cattle species were not large,between 0.01-0.25,and the genetic distance between the Sichuan cattle and Simmental cattle was the nearest,that between the Sichuan cattle and the Xuanhan's local cattle was the farthest.This was coincidence with the traditional morphological result.