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. 2014 Aug 21;14:224. doi: 10.1186/s12870-014-0224-4

Figure 7.

Figure 7

Effects of inhibiting auxin transport by NPA on in vitro embryogenesis initiation and progression. Embryogenic masses originated by secondary embryogenesis from immature zygotic embryos. A, B: Control cultures, without NPA, at the beginning of the treatment (A) and 20 days afterwards (B), when embryo development and new embryos (arrows) were observed. C, D: Culture containing 40 μM NPA at the beginning of the treatment (C) and 20 days afterwards (D), no further growth or new embryos were observed. Bars 5 mm.