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Fig. 1 | BMC Plant Biology

Fig. 1

From: What role does the seed coat play during symbiotic seed germination in orchids: an experimental approach with Dendrobium officinale

Fig. 1

The status of seed germination, fungal hyphae on seeds, and pelotons inside protocorms or seedlings at 32 and 62 days after the incubation of seeds with compatible or incompatible fungal strains in Dendrobium officinale. a, Protocorms (Stage 2 or 3) in two compatible fungal treatments at 32 days after incubation; b, Cross-sections of protocorm showing pelotons in the basal cells in two compatible fungal treatments at 32 days after incubation; c, Fungal hyphae clustered on the seed surfaces under the incompatible fungal FDd1 treatment at 32 days after incubation; d, Seedlings in the compatible PI treatment bore two leaves (Stage 5) and some had one or two roots at 62 days after incubation; e, Cross-sections of seedling showing massive pelotons inside basal cells in two compatible fungal treatments at 62 days after incubation; f, Cross-sections of protocorm showing pelotons occasionally observed in the basal cells in the incompatible fungal FDd1 treatment at 62 days after incubation. The red arrows indicate pelotons inside protocorm or seedling cells

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