Confirmation of the insect vector transmitting Phytoplasma sp. associated with Peach yellow disease and detection of the Phytoplasma sp. in vector The Identif ica tion and Sequence Analysis of 16S Ribosomal DNA of the Phytoplasma sp. Associated with Peach Yellow Disease The Identif ica tion and Sequence Analysis of 16S Ribosomal DNA of the Phytoplasma sp. Associated with Peach Yellow Disease