INAFOR 11P-021 INTERNATIONAL CONFERENCE OF INDONESIAN FORESTRY RESEARCHERS (INAFOR) Puccinia meibomiae (Uredinales) of Erythrina crista-galli in Indonesia

Erythrina crista-galli is South American original tree. The tree is fast growing type and adapted to various agrecological zone. In Indonesia, the tree commonly planted in yard or along the high way as ornamental tree due to its beautiful shape and color of the flower. Recently leaf spot disease was found from leaves of E. crista-galli collected from various areas in Indonesia, and there is no report the occurence of the rust species of this tree in Indonesia. The present study aimed to identify the rust species based on its morphological characteristics. Thin section of the sample of diseased leaf placed in glass slide with a drop of lactophenol solution for observation under light microscope. Shape, size, color, surface structure of the spores and the fruiting bodies were recorded. The obtained data was compaired with references and other rust species of Erythrina of Indonesian origin for identification. The results indicated that the rust of E. crista-galli is Phakopsora meibomiae, and the uredinial state only exists in Indonesia. P. meibomiae was found from the leaf samples of E. crista-galli collected from West Java, East Kalimantan, North Sulawesi and Bengkulu.