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. 2022 Jan 13;12:775290. doi: 10.3389/fpls.2021.775290

FIGURE 2.

FIGURE 2

Different stages in the germination process of Gastrodia confusoides seeds and indications of the presence of mycorrhizal fungi. (A) Developing protocorms from a single packet at 12 months after sowing. Scale bar = 2 mm. (B) A selection of different stages of protocorms and young root tubers from the packet. Scale bar = 2 mm. (C) At the early stage of germination, fungal hyphae (arrow) have colonized the basal part of embryo. Scale bar = 50 μm (D) The enlarged embryo has ruptured the seed coat. Scale bar = 50 μm (E) The developing protocorm has elongated with the meristematic cells at the up region and the fungal colonization at the basal region. Fungal hyphae (arrows). Scale bar = 50 μm.