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Blütenbildung von Pinguicula lusitanica in vitro durch Fütterung mit Pollen

Richard Harder and Inge Zemlin
Planta
78. Bd., 1. H. (1968), pp. 72-78
Published by: Springer
Stable URL: http://www.jstor.org/stable/23366894
Page Count: 7
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Blütenbildung von Pinguicula lusitanica in vitro durch Fütterung mit Pollen
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Abstract

Plants of Pinguicula lusitanica were grown in individual Erlenmeyer flasks on an inorganic agar medium containing no nitrogen or phosphorus. After 8 weeks of culture, twenty of the plants were fed Pinus pollen 4 times over a period of 5 weeks. As a result of the feeding, the number of leaves as well as the diameters of the rosettes were increased. The leaves became turned a deeper green and aged more slowly. The most spectacular effect of the pollen feeding was an initiation of flowering. The first buds were already visible after the second feeding. All of the treated plants flowered before the last feeding, whereas none of the untreated plants flowered. During the following 6 months, the treated plants developed 127 flowers, the largest number on a single specimen being 14. Even after this period of time the untreated plants remained vegetative.

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