Abstract: Objective and MetnodThe study was carried out to observe the botanical and biological characters of thomson seedless bud variation and analyze young leaves by RAPD,using thomson seedlings as the control.ResultThere were different variations in bud variation of botanical characters.It was found that there was a bud variation with tetraploid in the test.ConclusionThrough RAPD analysis, by using 470 random 10-alkali primers, RAPD polymorphism were detected from 30 samples. The polymorphism information could be provided with 3 random primers.