Identification and pathogenicity of Rhizoctonia solani and binucleate Rhizoctonia anastomosis groups isolated from forage legumes in Erzurum, Turkey


EKEN C., Demirci E.

PHYTOPARASITICA, vol.31, no.1, pp.76-80, 2003 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 31 Issue: 1
  • Publication Date: 2003
  • Doi Number: 10.1007/bf02979769
  • Title of Journal : PHYTOPARASITICA
  • Page Numbers: pp.76-80

Abstract

Three-hundred-twenty-five isolates of Rhizoctonia (215 R. solani and 110 binucleate Rhizoctonia) were obtained from roots and crowns of alfalfa, sainfoin and common vetch grown in Erzurum, Turkey. The isolates were assigned to five anastomosis groups (AG) of R. solani (AG-2-1, AG-3, AG-4, AG-5, and AG-10) and two anastomosis groups of binucleate Rhizoctonia (AG-I and AG-K). In pathogenicity tests on alfalfa, sainfoin and common vetch, the highest disease severities were caused by isolates of AG-4 and AG-5. Isolates of AG-10 and AG-I were not pathogenic on the three tested forage legumes, whereas isolates of AG-K on alfalfa and sainfoin, and of AG-2-1 on sainfoin, were moderately virulent. Alfalfa isolate AG-3 was moderately virulent on sainfoin. This is the first report of R. solani AG-3, AG-5, AG-10 and binucleate Rhizoctonia AG-I on alfalfa. In addition, all the R. solani and binucleate Rhizoctonia groups isolated from sainfoin and common vetch were recovered from these crops for the first time in Turkey.