NDLI: Senescence of Unfertilised Flowers in Epiphyllum Hybrids

Content Provider	Springer Nature Link
Author	Erdelská, O. Ovečka, M.
Copyright Year	2004
Abstract	Epiphyllum hybrids served as a model for the study of reserve remobilisation from unfertilised flowers to the mother stem tissues. Early phases of the tube senescence characterised by wilting were connected with degradation and transfer of reserve substances to the somatic organs of the mother plant. The degradation process began in perianth and stamens and continued through the successive zones (receptacular, pericarpellar and pedicellar) of the flower tube. The phloem-mediated backward substance transport was naturally indicated by the red pigment of the perianth -- cactorubin, while integrity of cells and tissues and green colour of the flower tube were still preserved. For the later phases of senescence the loss of permeability and successive breaking of the cell integrity, connected with the colour change of the tube from green to red was evident. The functioning of vascular bundles especially their phloem parts conducting dissolved substances to the sinks in mother stem organs were preserved until late stages of senescence. The recycling and remobilisation of nutrients from all parts of unfertilised ovary and ovules may be considered as a part of the life strategy in the family Cactaceae as well as in other taxa evolutionarily adapted to life in extreme environmental conditions.
Starting Page	381
Ending Page	388
Page Count	8
File Format	PDF
ISSN	00063134
Journal	Biologia Plantarum
Volume Number	48
Issue Number	3
e-ISSN	15738264
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2004-01-01
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Plant Science Horticulture

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