For the purpose of detemlining the origin of evergreen azalea cultivars , the Edo − kirishima , Kurume azalea and Miyama − kirishima cultivar groups were analyzed using PCR − RFLP marker of chloroplast DNA thaI had been obtained in the previ − ous smdy of wild evergreen azalea populaIions of Kirishima mountains . Most of Edo ・ kirishima and Kurume azalea cultivars possessed a banding pattern of Rhododen 〔 加 n kaempferi and the less possibility could be indicated in the contribution of R .

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... num to the cultivars formation of these groups . On the other hand , Miyama − kirishima eultivars that were selected from wild population of R . kiusianum possessed each banding pattems corresponding to the each source mountains date .