Mycorrhizal colonization of Pinus muricata root tips. Mycorrhizal colonization of Pinus muricata root tips colonized by Rhizopogon occidentalis as influenced by maternal seed family of P. muricata and soil type used. (a) Total colonization. (b) Root tips colonized per unit root length. Means with different letters are significantly different from each other (p < 0.05) according to Tukey HSD post-hoc tests.
Piculell et al. BMC Biology 2008 6:23 doi:10.1186/1741-7007-6-23