Possible phytotoxic metabolites in culture filtrates of Diaporthe phaseolorum var. sojae |
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| Authors: | I K Kunwar A Halfon-Meiri J B Manandhar J B Sinclair |
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| Institution: | (1) Department of Plant Pathology, University of Agriculture Services, Bangalore, India;(2) Division of Seed Research, The Volcani Center, Bet Dagan, Israel;(3) Division of Plant Pathology, Ministry of Agriculture, Khumaltar, Nepal;(4) Department of Plant Pathology, University of Illinois at Urbana-Champaign, 1102 S. Goodwin Avenue, 61801 Urbana, IL, USA |
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| Abstract: | Filter-sterile culture filtrates of an isolate of Diaporthe phaseolorum var. sojae (Phomopsis sojae), causal agent of pod and stem blight and seed decay of soybeans (Glycine max), grown on Czapeks-dox broth significantly (P = 0.05) inhibited germination of cabbage (Brassica oleracea), cantaloupe (Cucumis melo), onion (Allium cepa), soybean, and wheat (Triticum vulgare) seeds and wilted soybean seedling cuttings within 24 hr. Inhibition of seed germination and severity of soybean seedling wilt increased with increased concentrations of culture filtrates and increased incubation time of the cultures. |
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