Reference Report for IND20389441
| Title: | Soybean sudden death syndrome: cultivar reactions to inoculation in a controlled environment and host range and virulence of causal agent. |
| Authors: | Melgar, J., Roy, K.W. |
| Source: | Plant Dis. 1994, 78(3):265-268 |
| Abstract: | The reactions of 27 soyabean cultivars to inoculation with Fusarium solani form A, the cause of sudden death syndrome, were determined under growth chamber conditions. Significant differences in susceptibility occurred among the cultivars. Selected comparisons between cultivar reactions in the growth chamber and in the field indicated close correspondence, although there were some inconsistencies. Of 21 nonwounded and wounded plant species inoculated in a host range test, the only nonwounded species developing symptoms were soyabean and mung bean (Vigna radiata), indicating that these were more compatible hosts than green bean (Phaseolus vulgaris), lima bean (Phaseolus lunatus) and cowpea which became infected only after wound inoculation. It is concluded that F. solani form A is physiologically specialized, with a host adaptation limited to a few species belonging to the Fabaceae. In virulence tests, some of the 31 isolates tested differed, but most (24) were equally virulent. Virulence was not related to substrate or geographic origin. |
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