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Charakterisierung von Rhizoctonia solani assoziiert mit Sore Shin und Blattflecken‐symptomen an Tabak in Zimbabwe
Author(s) -
Mpofu S. I.,
Julian A. M.
Publication year - 1994
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1111/j.1439-0434.1994.tb00620.x
Subject(s) - rhizoctonia solani , biology , pathogenicity , hypha , microbiology and biotechnology , leaf spot , rhizoctonia , botany , horticulture
The relationship between Rhizoctonia solani isolates derived from leaf spot and sore shin symptoms on tobacco was characterized by determining nuclear number, hyphal diameter, anastomosis grouping (AG) and pathogenicity. The leaf spot isolates had significantly more nuclei per cell, and wider hyphae than the sore shin isolates. Anastomosis pairings with known tester strains confirmed the leaf spot isolates to be AG 3, and the sore shin isolates to be AG 4. Pathogenicity testing indicated that the leaf spot isolates were pathogenic to all parts of the plant, whereas the sore shin isolates tended to form lesions on stems only.