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Figure 4 | BMC Developmental Biology

Figure 4

From: Variations in morphology and PSII photosynthetic capabilities during the early development of tetraspores of Gracilaria vermiculophylla (Ohmi) Papenfuss (Gracilariales, Rhodophyta)

Figure 4

Changes in Y (II) and Fv/Fm during early development of G. vermiculophylla. A, In freshly released tetraspores, both Fv/Fm and Y (II) were very low; B, The PSII photosynthetic capabilities in attached tetraspores before the first division, compared with A, were enhanced significantly; C, Attached tetraspores after the first division; D, Attached tetraspores after the second division. There was no significant difference in the photosynthetic capabilities of PSII among E-M; E-M, multicellular bodies (disks) at different developmental stages. Statistical significance was tested by one-way ANOVA and Student-Newman-Keuls post hoc comparison. The arrow shows the start of tissue cultivation of excised disk. Y (II) was determined under constant illumination of 156 μmol photon m-2.s-1.

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