Abstract:

【OBJECTIVE】Pingguoli pear were excellent germplasm resource with cold resistance, but the ownerships of it was not find out clearly. The objective was to find out the ownership of Pingguoli pear. 【METHOD】 Using RAPD markers, delving and clearing the genetic relationships of partly Pyrus germplasm was studied, by the existent demurral and the dendrogram. 【RESULTS】By the existent demurral on systematic status of Pingguoli pear, the general Euclidean distances between P. Bretschneideri Rehd., P.pyrifolia Nakai, P. ussuriensis Maxim, P. communis L. and Pingguoli pear were 5.022, 5.713, 6.099, and 6.703 respectively. From the dendrogram, Pingguoli pear was clustered with P. Bretschneideri Rehd. 【CONCLUSION】That was to say Pingguoli pear should be most similar to White-pear system.