Fig. 3

Colony morphology of Pythium isolates at 3 days after incubation on PDA. P. inflatum (a, e and f), P. ultimum var. ultimum (b), P. orthogonon (c), P. torulosum (d), P. ultimum var. ultimum (g), P. ultimum var. ultimum or P. ultimum var. sporangiferum (h and i), and P. irregulare (j) incubated under a 12 h light/12 h dark cycle at 23 ± 1 °C