The proliferation of arbuscular mycorrhizal (AM) fungi derived from rhizospheres of physic nut (coding with CM1, CM2, NR1, and NR2) and sacha inchi (coding with CR1 and CR2). Only AM spores that could colonize plant roots and produce offspring spores are presented. Every assessment was done in five replicates. The origins of these AM spores are available in Table 5. The difference in lower-case letters or capital letters refers to the statistical difference of means compared by one-way ANOVA across the percentages of root colonization (F(4, 20) = 30.84, p ≤ 0.0005 for physic nut and F(3, 16) = 151.50, p ≤ 0.0005 for sacha inchi) or numbers of offspring spores per 20 g soil (F(4, 20) = 74.34, p ≤ 0.0005 for physic nut and F(3, 16) = 623.08, p ≤ 0.0005 for sacha inchi), respectively.