To assess root colonization by AMF, I want to use the grid-line intersect method (Giovannetti & Mosse, 1980) or even the magnified intersection method (McGonigle et al., 1990).
I understand the principle of the methods. But how can I best train my eyes to recognize mycorrhizal from non mycorrhizal structures? I have found articles, handbooks and manuals detailing the methods (and others) but I cannot follow it if I do not know what to count or not as a mycorrhizal structure. I am looking for a person, course, book or online resource that could teach me this skill.
If it is relevant: I am working on wheat roots sampled about one week before harvest.
I would be thankful for any help!