Anastomosis groups and pathogenicity of Rhizoctonia diseased plants. Each isolate was hyphalsolani isolates from Brazil. Plant Disease 69:599-601. tipped and conformed to the current species concept of R. solani (15). Anastomosis groups (AG) of 130 Rhizoctonia solani isolates obtained from 31 plant species found Throughout the study, all isolates were in I I states of Brazil were determined. Fifty-nine isolates were assigned to AG-4, 10 to AG-3, 42 to maintained on potato-dextrose agar AG-2, and 11 to AG-i. Eight isolates did not anastomose with any of the tester strains or among (PDA) slants at 10 ± 1 C and transferred themselves, and no isolate was assigned to AG-5. Pathogenicity of 35 isolates from different p d a lly t f0 me dium. anastomosis groups on hypocotyls and/or leaves of kidney bean, soybean, red pepper, radish, periodically to fresh medium. sugar beet, and cabbage varied considerably, from nonvirulent to highly virulent. In general, The isolates were subjected to hyphal anastomosis groups lacked host specificity. The optimum growth temperature for isolates tested anastomosis pairing by using the tester varied from 20 to 30 C.

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A leaf spot disease of mango (Mangifera indica) caused by Cylindrocladium scoparium was found in central Brazil in 1994. Pathogenicity tests and re-isolations from artificially-inoculated leaves confirmed that C. scoparium was the incitant. This is believed to be the first report of the fungus attacking mango leaves. Zusammenfassung Cylindrocladium scoparium ais Ursache einer Blattfleckenkraidcheit des Mangobaums (Mangifera indica) in Zentralbrasilien Eine Blattfleckenkrankheit bei Mango (Mangifera indica) verursacht durch Cylindrocladium scoparium wurde 1994 in Brasilien gefunden. Der Nachweis gelang mittels Pathogenitats-Tests und Re-Isolation von infizierten Blattern. Dies ist der erste Bericht tiber den Befall von Mango-Blattern durch C. scoparium.