6Sassa,H, Hirano H,Ikehashi H. Self-incompatibility-related RNase in styles of Japanese pear(Pyrus pyrifolia Rehd)[J]. Plant Cell Physiol.1992,33:811-814.
7Ishimizu T, Sato Y,Saito T,et al.Identification and partial amino acid sequences of seven S-RNase associated with self-incompatibility of Japanese pear, Pyrus pyrifolia Nakai[J].j. Biochem.,1996,120:326-334.
8Sassa H, Hirano H, Ikehashi H. Identification and Characterization of Stylar Glycoproteins Associated With Self-incompatibility genes of Japanese Pear, Pyrus Serotina Rehd[J]. Molecular General Genetics, 1993,241:17-25.
9Tomimoto Y, Nakazaki T, Ikehashi H, et al. Analysis self-incompatibility related ribonucleases(S-RNase)in two species of pears. Pyrus communis and Pyrus ussuriensis[J].Scientic Horticulture, 1996,66:159-167.