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2007 | 57 |
Tytuł artykułu

Dormancy release and germination in recalcitrant Aesculus hippocastanum seeds

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EN
Abstrakty
EN
The investigation of dormancy release in Aesculus hippocastanum seeds was aimed at estimating the proportion of coat-imposed to embryo dormancy, and studying the growth initiation providing embryo dormancy release. During winter, horse chestnut seeds exhibited 16–17 week-lasting deep dormancy, which predominantly was determined by coat-imposed dormancy. Embryo dormancy lasted for 11–12 weeks of wet cold stratification. Embryo dormancy was weak, even the embryo axes excised from deeply dormant seeds were capable of extending to the size exceeding the axis length in intact seeds at radicle protrusion. Embryo dormancy release manifested itself in gradually increasing growth capacity of both embryo axes and cotyledonary petioles. The growth initiation in horse chestnut seeds occurs only by cell elongation. During growth initiation, a more rapid fresh weight gain was observed in comparison with length increment, thus indicating that accumulation of osmotically active substances and active water uptake by embryo axis cells were ahead of their increasing longitudinal cell wall extensibility. Cell wall loosening appeared to be directly related to embryo dormancy release. The hormonal regulation of embryo dormancy release in horse chestnut seeds is discussed.
Wydawca
-
Czasopismo
Rocznik
Tom
57
Opis fizyczny
p.27-33,fig.,ref.
Twórcy
  • Institute of Plant Physiology, Botanical street 35, Moscow 127276, Russia
Bibliografia
  • Antipova O.V., Bartova L.M., Kalashnikova T.S., Obroucheva N.V., Voblikova V.D., Muromtsev G.S. 2003. Fusicoccin-induced cell elongation and endogenous fusicoccin-like ligands in germinating seeds. Plant Physiology and Biochemistry 41: 157–164.
  • Daletskaya T.V., Nikolaeva M.G. 1987. Influence of fusicoccin on deep-dormant seeds. Doklady Academii Nauk SSSR 293: 510–512.
  • Daws M.I., Lydall E., Chmielarz P., Leprince O., Matthews S., Thanos C.A., Pritchard H.W. 2004. Developmental heat sum influences recalcitrant seed traits in Aesculus hippocastanum across Europe. New Phytologist 162: 157–166.
  • Grubisic D., Konjevic R., Neskovic M. 1988. The effect of some growth regulators on light-induced germination of Paulownia tomentosa seeds. Physiologia Plantarum 72: 525–528.
  • Evans M.L. 1984. Functions of hormones at the cellular level of organization. In: Pirson A., Zimmermann M.H. (eds) Encyclopedia of Plant Physiology, N.S. Springer-Verlag, Berlin 10: 23–78.
  • Obroucheva N.V. 1999. Seed Germination, a guide to the early stages. Leiden, Backhuys Publishers.
  • Obroucheva N.V., Antipova O.V. 2000. The distinct controlling of dormancy release and germination commencement in seeds. In: Dormancy in Plants: from Whole Plant Behaviour to Cellular Control. Viemont J. D., Crabbe J. (eds). CABI, Willingford, pp. 35–45.
  • Obroucheva N.V., Antipova O.V. 2004. The role of water uptake in the transition of recalcitrant seeds from dormancy to germination. Russian Journal of Plant Physiology 51: 848–856.
  • Rudolf P.O. 1974. Aesculus L. In: Seeds of woody plants in the United States. Agriculture HandbookNo. 450. Forest Service, U.S. Department of Agriculture, Washington, pp. 195–200.
  • Simonovich A., Grubisic D., Giba Z., Konjevic R. 2000. Interaction of gebberellic acid and fusicoccin in abscisic acid-inhibited and thermo-inhibited germination of lettuce seeds. Archive of biological sciences, Belgrade 52: 33–38.
  • Suszka B. 1966. Condition for breaking of dormancy or germination of seeds of Aesculus hippocastanum L. Arboretum Kórnicke 11: 203–220.
  • Tompsett P.B., Pritchard H.W. 1993. Water status changes during development in relation to the germination and desiccation tolerance in Aesculus hippocastanum L. seeds. Annals of Botany 71: 107–116.
  • Widmoyer F.B., Moore A. 1968. The effect of storage period temperature and moisture on the germination of Aesculus hippocastanum seeds. The Plant Propagator 14: 14–15.
Typ dokumentu
Bibliografia
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Identyfikator YADDA
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