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Development of pollen quality traits of moisture content and germination of fresh and dried pollen (as indicated in the key) in four orchids, Dactylorhiza fuchsii (A), Dactylorhiza maculata (B), Orchis mascula (C) and Anacamptis morio (D). Horizontal solid and dashed lines signify pollinia extracted from closed and open flowers, respectively, while the gap represents partially open flowers.
