Lidia ADUMITRESEI
“Alexandru Ioan Cuza” University of Iasi, “Anastasie
Fatu” Botanical Garden, Dumbrava Rosie Street no. 7-9, 700487
Iasi – Romania
Camelia Mariana IFRIM
“Alexandru Ioan Cuza” University of Iasi, “Anastasie
Fatu” Botanical Garden, Dumbrava Rosie Street no. 7-9, 700487
Iasi – Romania
Irina Neta GOSTIN
“Alexandru Ioan Cuza” University of Iasi, Biology
Department, Carol I no. 20 A, 700505 Iasi – Romania
https://doi.org/10.47743/jpd.2024.31.1.965
Keywords: anatomy, annual shoot, leaf, Rosa
species, stem.
Abstract: The observations aim a comparative
study of the anatomical structure of the stem and leaf, during
anthesis, in some Rosa species and varieties (sports),
in order to complete the data from the specialized literature
because the morphological information is more numerous than the
anatomical ones. Moreover, sometimes they are even inconsistent,
as in the case of the glands/glandular trichomes on the leaves
and stem.
A series of similarities are highlighted, which can be considered
conservative characteristics of the Rosa genus, as for
instance: the rapid transition to the secondary structure, the
disposition of the vascular bundles (of collateral type) on a
circle, the absence of the phelloderm’s activity in the
first year, the presence of the crystal idioblasts and the bifacial
structure of the leaf. Also, a series of characteristics of each
species is highlighted: disposition of the secondary xylem vessels,
quantity of libriform fibres, the nature of the walls of the cells
from the medullar rays, the thickness of the walls of the sclerenchyma
fibres and the presence of the crystal idioblasts in various tissues.
How to cite this article:
ADUMITRESEI L., IFRIM C. M. & GOSTIN I. N. 2024. Anatomical
considerations on the annual shoot in some wild roses. J.
Plant Develop. 31: 3-24
https://doi.org/10.47743/jpd.2024.31.1.965
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