Anastomosis Groups and Pathogenicity ofRhizoctonia solaniIsolates from Brazil
- 1 January 1985
- journal article
- research article
- Published by Scientific Societies in Plant Disease
- Vol. 69 (7) , 599-601
- https://doi.org/10.1094/pd-69-599
Abstract
Anastomosis groups (AG) of 130 R. solani isolates obtained from 31 plant species found in 11 states of Brazil were determined. Fifty-nine isolates were assigned to AG-4, 10 to AG-3, 42 to AG-2, and 11 to AG-1. Eight isolates did not anastomose with any of the tester strains or among themselves, and no isolate was assigned to AG-5. Pathogenicity of 35 isolates from different anastomosis groups on hypocotyls and/or leaves of kidney bean, soybean, red pepper, radish, sugar beet and cabbage varied considerably, from nonvirulent to highly virulent. In general, anastomosis groups lacked host specificity. The optimum growth temperature for isolates tested varied from 20.degree.-30.degree. C.This publication has 1 reference indexed in Scilit:
- Pathogenicity and Host Specificity ofRhizoctonia solaniIsolated from CarrotsPhytopathology®, 1983