Reproductive biology of Ruscus hypoglossum L. in Slovakia

• Autorzy: Halada L , Erdelska O.
• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

reproduction; Asparagaceae; Ruscus hypoglossum; embryo; Slovakia; seed

• Wydawca: -
• Czasopismo: Acta Biologica Cracoviensia. Series Botanica
• Rocznik: 2005
• Tom: 47
• Numer: 1
• Opis fizyczny: p.213-217,fig.,ref.

Twórcy

autor

Halada L

• Slovak Academy of Sciences, Branch Nitra, Akademicka 2, P.O.Box 23B, SK-949 01 Nitra, Slovakia

autor

Erdelska O.

Bibliografia

• Čelakovský LJ. 1893. On cladodes of Asparagaceae. Comparative morphological study. Rozpravy 2. Třídy České Akademie 2/37: 1-50 (in Czech).
• Daumann E, and Synek F. 1968. Tier-, Wind- und Wasserbültigkeit in den tschechoslowakischen Flora. Die Monocotyledonen. Österreichische Botanische Zeitschrift 115: 427-433.
• Davis GL. 1966. Systematic embryology of the Angiosperms. J. Wiley and Sons, Inc. New York, London, Sydney.
• Futák J. et al. 1966. Flóra Slovenska, vol. I. Vydavateľstvo SAV, Bratislava.
• Golubeva IV. 1975. Morphogenesis of Ruscus ponticus Woronow ex Grossh. Botaničeskij Žurnal 60: 800-807.
• Halada Ľ. 1985. Ruscus hypoglossum L. - threatened taxon of the Slovak flora. Thesis. Comenius University, Bratislava (in Slovak).
• Halada Ľ. 1994. Ruscus hypoglossum L. in Slovakia. Thaiszia 4: 183-195.
• Halada Ľ, and Feráková V. 1999. Ruscus hypoglossum L. In: Čeřovský J, Feráková V, Holub J, Maglocký Š, and Procházka F [eds.], Red book of threatened and rare species of plants and animals of Slovakia and Czech Republic. Vascular Plants, 321. Príroda, Bratislava (in Slovak).
• Kaussmann B. 1955. Histogenetische Untersuchungen zum Flachsproßproblem. Bot. Stud., VEB Gustav Fischer Verlag, Jena, 3.
• Komar GA. 1985. Sem. Asparagaceae. In: Takhtajan A. [ed.], Anatomia seminum comparativa, vol. I, 99-103. Nauka, Leningrad.
• Marhold K, and Hindák F [eds.]. 1998. Checklist of non-vascular and vascular plants of Slovakia. Veda, Bratislava.
• Markgraf F. 1974. Morphologische Kleinigkeiten mit größeren Folgen. Phyton 16: 105-115.
• Murín A, and Májovský J. 1974. Neue und bemerkenswerte Arten der Flora Slowakei. VI. 8. Ruscus hypoglossum. Acta Facultatis Rerum Naturae Universitas Comenius Bratislava XXIII: 51-57.
• Pilát A. 1953. Deciduous trees and shrubs of our gardens and parks. Státni zemĕdĕlské nakladatelství, Praha (in Czech).
• Sachs T, Novoplansky N, and Kagan M. 1993. Variable development and cellular pattering in epidermis of Ruscus hypoglossum. Annals of Botany 71: 237-243.
• SatarovaTN, 1990. Asparagaceae. In: Batygina TS, and Jakovlev MS [eds.], Comparative embryology of vascular plants, vol. V, 113-124. Nauka, Leningrad (in Russian).
• Schlitter J. 1960. Die Asparageenphyllokladien erweisen sich auch ontogenetisch als Blätter. Botanische Jahrbericht 79: 428-446.
• Yeo PF. 1968. A Contribution to the taxonomy the genus Ruscus. Notes of the Royal Botanic Garden Edinburgh 28: 237-269.