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This research investigates the virulence of Colletotrichum truncatum on different soybean genotypes and identifies sources of resistance.

November 13, 2025BMC Plant BiologyOpen Access

Virulence patterns of Colletotrichum truncatum isolates causing soybean anthracnose disease and identification of resistance sources

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Research reveals virulence differences in Colletotrichum truncatum isolates in soybean, suggesting key breeding options for resistance.

This research investigates the virulence of Colletotrichum truncatum on different soybean genotypes and identifies sources of resistance.
Tested sixty C. truncatum isolates for virulence against three soybean genotypes.
Measured disease progression using Area Under Disease Progress Curve (AUDPC).
Conducted pooled ANOVA for Isolate and Genotype interactions.
Screened ninety-five soybean genotypes for resistance against the most virulent isolate CT-18.
Performed molecular diversity analysis on agronomically superior genotypes.
Identified CT-18 isolate as the most virulent among tested isolates.
Seven soybean genotypes showed resistance against CT-18.
Genotypes grouped into six major clusters based on molecular diversity analysis.
NRC 130 and NB 208 had the lowest disease severity scores.

Mandloi et al. (2025) studied this question.

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