Figure 1
From: Is the basal area of maize internodes involved in borer resistance?
LIBR measurement and borer damage in the area. A- Examples of damage caused by larval feeding in internode basal area. B - Length of the basal internode ring (LIBR). LIBR measurement on one side of the internode (arrow in red), and sampling area for biochemical analyses: I1, basal part of internode = LIBR; I2, upper part of the internode (2 cm up from the LIBR area).