Biomimetics and water status of plant tissues

Doctoral Dissertation uoadl:1308764 302 Read counter

Unit:
Τομέας Βοτανικής
Library of the School of Science
Deposit date:
2016-02-26
Year:
2016
Author:
Χειμώνα Χρυσάνθη
Dissertation committee:
Σοφία Ριζοπούλου Αναπλ. Καθηγήτρια (επιβλέπουσα), Παναγιώτης Αποστολάκος Καθηγητής, Ελένη Σκαλτσά Καθηγήτρια
Original Title:
Βιομιμητική και υδατική κατάσταση φυτικών ιστών
Languages:
Greek
Translated title:
Biomimetics and water status of plant tissues
Summary:
The purpose of this PhD Τhesis is to study, describe and observe the morphology
and the surface structures of the infertile parts of the flower of the plants
Asphodelus ramosus and Capparis spinosa, the comparison of the morphology
between white and coloured areas, the upper and lower surface and between the
base and the periphery or their top. Furthermore, this Thesis aims at recording
the optical properties and the wettability of the studied tissues, as well as
investigating the presence of a correlation between morphological data and
specific properties.
The study of the morphology of the floral tissues has been performed with an
optical microscope, a scanning electron microscope (SEM) and an atomic force
microscope (AFM). The description of the colour of the flowers was realized
with a colorimeter. The study of the optical properties of fresh floral parts
has been accomplished with a UV-vis-NIR spectrophotometer. The study of the
wettability of the surface of tepals, petals and sepals has been carried out
with a contact angle tension meter. The water potential of the tissues has been
measured with a dew point microvoltmeter.
There were marked differences in the shape, size and relief of epidermal cells
and the surfaces of the compared parts. The morphological differences
identified in the infertile parts of the flower of the two considered species,
affect the tested properties. Reflectance rates are related to the roughness
and vertical distance between successive peaks and valleys of the relief. The
contact angles are positively correlated to the roughness and the horizontal
distance of successive peaks of the relief.
The detailed knowledge of the relief of infertile floral parts of Asphodelus
ramosus and Capparis spinosa, combined with the correlation of morphological
data to optical properties and wettability, as well as the presence of periodic
structures that give rise to interference phenomena, constitute data that can
be used in the field of biomimetics, applied in human constructions, while
spurring the interest of the scientific community for the plants of the
Mediterranean ecosystem in this regard.
Keywords:
Flower, Surface, Morphology, Optical properties, Wettability
Index:
No
Number of index pages:
0
Contains images:
Yes
Number of references:
469
Number of pages:
viii, 235
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