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季风性落叶病是印度橡胶树最严重的病害。为研究植胶区其它的寄主植物向胶树提供接种体的作用,对一些疲霉菌的寄主植物作了一次详细研究。研究了8个奇主植物的分离菌的形态和繁殖,用橡胶叶柄人工接种法作了交互致病性测验并证实它们的致病性。在分得的8个分离菌中,6个分离菌对橡胶树是致病的,并经英国皇家真菌研究所鉴定种名。石榴上的烟草疫霉和芒果、番石榴上的橡胶树疫霉是新寄主记载,胡椒上的烟草疫霉是新病菌记载。6个分离菌对橡胶树致病证明其它寄主植物有向橡胶树提供接种体的作用。
Monsoon deciduous disease is the most serious disease of the gum tree in India. In order to study the role of other host plants in the rubber plantation to provide accessions to the gum tree, a detailed study of host plants of some of the molds was conducted. The morphological and reproductive isolation of 8 dominant plant species was studied, and the pathogenicity of the isolates was tested by artificial inoculation of rubber petioles. Of the eight isolated isolates, six isolates were pathogenic to the rubber tree and were identified by the Royal Fungus Institute. Phytophthora capsici and mango on pomegranate, Phytophthora capsici on guava is a new host record, and Phytophthora capsici on pepper is a new germ record. Six isolates demonstrated rubber tree pathogenesis as an inoculum body for other host plants directed rubber trees.