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. 2017 Aug 15;8:1395. doi: 10.3389/fpls.2017.01395

FIGURE 1.

FIGURE 1

Progression of basal stem rot in 3-month-old oil palm seedlings challenged with Ganoderma boninense. (A) Control (non-inoculated) seedling. (B) Asymptomatic infected (inoculated) seedling at 4 weeks post-inoculation (wpi). (C) Infected seedling at 8 wpi with at least 2 or more yellowing leaves. (D) Infected seedling at 12 wpi with al least three or more browning leaves and visible fruiting bodies. (E) Infected seedling at >12 wpi shows complete necrosis. (F) Healthy roots of a control seedling. (G) Roots of an infected seedling show colonization by G. boninense (red arrows indicate mycelium attachment). (H) Boles of the control seedlings and (I) boles of the infected seedlings show brown coloration. Red arrow-indicates sporophore (left) and necrosis (right).