Araceous and Nonaraceous Hosts of Taro Feathery Mosaic Disease


Author(s): Manuel K. Palomar, Joji Y. Duatin and Victoria G. Palermo

Abstract

Six plant species belonging to Araceae and one species of Solanaceae were infected with two taro feathery mosaic disease. Typhonium trilobalum (Linn.) Schott, Dieffenbachia maculata, Dieffenbachia sp.. and Datura metel Blanco were highly susceptible while Xanthosoma sp. w. moderately susceptible. Caladium bicolor (Avit.) Vent showed stunting and leaf distortion while Cyrtosperma merkussii (Linn.) Schott was the only species which showed latent infection. Dieffenbachia spp. had an average incubation period of 4.5 days followed by D. metel with 7.8 days; T. trilobatum, 13.5 days; Xanthosoma sp., 14.4 days; C. bicolor, 17.6 days and C. merkussii, 14 days. Back-inoculation to taro showed the positive presence of taro feathery mosaic in these plants.

Keywords : Taro feathery mosaic disease. Alternate hosts. Symptoms. Manual inoculation. Back-inoculation. Latent infection. Araceae. Colocasia esculenta.

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