Identification of Soybean Accessions Resistant to <i>Macrophomina phaseolina</i> by Field Screening and Laboratory Validation

Fig. 1. Severely infected soybean with Macrophomina phaseolina showing: (A) above-ground symptoms; (B) evaluation systems used to identify resistance based on root and stem severity on the scale 1 to 5, where 1 = no microsclerotia visible in tissue and 5 = vascular tissue darkened due to high numbers of microsclerotia both inside and outside of the stem and root tissues; and (C) colony forming unit of M. phaseolina on semi-selective media. Figs. 1A and 1C were adopted from Mengistu, et al. (11) and Mengistu et al. (8), respectively.



Image from Plant Health Progress article:
Identification of Soybean Accessions Resistant to Macrophomina phaseolina by Field Screening and Laboratory Validation