Root and rhizome thickness, root hair number,
and root hair length and width were measured on
five 1-cm long root or rhizome bits using micrometry.
Clearing and staining of roots and rhizomes
for mycorrhizal assessment were performed as in
Koske and Gemma (1989). A bright field Olympus
BX51 microscope attached with Progres 2
camera was used to quantify the colonization at ×
400 magnifications and photograph the mycorrhizal
morphology. The extent of root length colonized
by different fungal structures was deter