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Hieracium subgen. Pilosella: pollen stainability in sexual, apomictic and sterile plants

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Abstract

Two pollen stainability tests (Alexander’s stain and acetocarmine) were used to detect differences in pollen viability of the sexual, apomictic and sterile plants of Hieracium subgen. Pilosella. In sexual taxa (Hieracium bauhini and H. densiflorum), the average stainability was 93.7–98.4%. Similarly high stainability (92.2–97.2%) was found in the apomictic Hieracium pilosellinum and in the majority of the apomictic populations (or plants) of the pentaploid and hexaploid H. bauhini. In some apomictic plants of Hieracium bauhini the average pollen stainability was 49.0–75.4%. The lowest pollen stainability was found in the sterile plants, i.e. the triploid H. pistoriense (33.6%) and the pentaploid H. brachiatum (29.6%).

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  1. Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, CZ-61137, Brno, Czech Republic

    Olga Rotreklová

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  1. Olga Rotreklová
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Correspondence to Olga Rotreklová.

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Rotreklová, O. Hieracium subgen. Pilosella: pollen stainability in sexual, apomictic and sterile plants. Biologia 63, 61–66 (2008). https://doi.org/10.2478/s11756-008-0019-x

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