Effect of <i>Geosmithia morbida</i> Isolate and Temperature on Canker Development in Black Walnut

Fig. 4. Average canker area in black walnut trees following inoculation with four Geosmithia morbida isolates representing different rDNA ITS haplotypes at 25/20°C or 32/20°C day/night temperatures in May 2010 (family OSU1). The experiment was repeated in August (familyOSU295) and October 2010 (family Green 280). Temperature differences were significant (P < 0.05) for each month. Within each temperature, isolate means not followed by the same letter are different (P = 0.05) by Tukey’s HSD test. Bars represent standard deviations.



Image from Plant Health Progress article:
Effect of Geosmithia morbida Isolate and Temperature on Canker Development in Black Walnut