Wyniki wyszukiwania

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Cechy morfologiczne i anatomiczne wybranych gatunków kokoryczek Polygonatum Mill. jako próba wyjaśnienia historycznej nazwy tych roślin leczniczych - sigillum Salomonis

100%

Kadlubek P. K., Drobnik J.

Analecta. Studia i Materiały z Dziejów Nauki

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2014

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tom 23

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nr 1

2

Reproductive biology of Ruscus hypoglossum L. in Slovakia

85%

Halada L., Erdelska O.

Acta Biologica Cracoviensia. Series Botanica

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2005

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tom 47

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nr 1

Ruscus hypoglossum L. (Asparagaceae), a rare and endangered species of the Malé Karpaty Mts. in Slovakia, is an evergreen geophyte having rigid leaves with special bracts developed on them. The flowers are unisexual, and the plant is dioecious. Well-developed stamens and rudimentary pistils in different stages of development occur in male flowers. Remnants of degenerated anthers persist in female flowers, which have two ovules in the ovary. Male plants prevail in local populations; the average ratio of male to female plants is 5:1. Reproduction in Ruscus hypoglossum is generative and vegetative. Fruit (red berry) development lasts from May to October. The seeds are round, 6-8 mm in diameter, and albuminous. The endosperm is helobial, with a haustorial chalazal chamber. The endosperm cell walls in mature seeds are thickened and are composed of reserve cellulose. The mature embryo consists of one elongated cotyledon, a plumule, short hypocotyl and radicle. Seed dormancy lasts one year. Vegetative propagation is accomplished by rhizome fragmentation. The populations should be protected above all against direct destruction, shoot collecting, and grazing by animals, especially deer.

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Micromorphology of stamens of some species of the genus Sansevieria petagna (Asparagaceae)

71%

Klimko M., Wysakowska I., Wilkin P., Wiland-Szymanska J.

Steciana

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2017

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tom 21

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nr 2

The paper presents in the first time the results of a micromorphological study on stamens of Sansevieria species. Flowers of 15 species obtained from herbarium specimens deposited at the Royal Botanic Gardens, Kew, the Botanical Garden Berlin-Dahlem and the Botanical Garden in Poznań were studied. Observations were conducted under a light and a scanning electron microscope. The study revealed significant differences between the outer and inner surfaces of anthers. All species have a well-defined endothecium of enlarged cells with a U-shaped or helical secondary wall thickening. The article includes descriptions and illustrations of several quantitative and qualitative features of anthers and filaments of some Sansevieria species. Our study indicates that stamen micromorphology may be taxonomically significant.

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Kwiaty w domu

61%

Jaroszenko-Skrunda A.

Agrochemia

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2002

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nr 02

39-40

5

Budowa pni drzew jednolisciennych

57%

Jura-Morawiec J., Tulik M.

Sylwan

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2010

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tom 154

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nr 11

755-763

Ograniczanie wyników

1 Acta Biologica Cracoviensia. Series Botanica

1 Agrochemia

1 Analecta. Studia i Materiały z Dziejów Nauki

1 Steciana

1 Sylwan

1 Drobnik J.

1 Erdelska O.

1 Halada L.

1 Jaroszenko-Skrunda A.

1 Jura-Morawiec J.

1 Kadlubek P. K.

1 Klimko M.

1 Tulik M.

1 Wiland-Szymanska J.

1 Wilkin P.

1 Wysakowska I.

1 2017

1 2014

1 2010

1 2005

1 2002

Cechy morfologiczne i anatomiczne wybranych gatunków kokoryczek Polygonatum Mill. jako próba wyjaśnienia historycznej nazwy tych roślin leczniczych - sigillum Salomonis

Reproductive biology of Ruscus hypoglossum L. in Slovakia

Micromorphology of stamens of some species of the genus Sansevieria petagna (Asparagaceae)

Kwiaty w domu

Budowa pni drzew jednolisciennych