VOLUM OMAGIAL - Facultatea de Ştiinţe ale Naturii şi Ştiinţe Agricole

Contribution to the biometrical and phytibiological.../Ovidius University Annals, Biology-Ecology Series 14: 67-71 (2010)
The macroscopic exam served as a review of the
observed characters with free eye or with the
magnifer and as sensory through the perception of the
smell and the taste on the informations contained in
the bibliography of speciality and own researches
[10, 11].
The biometrical observations were obtained
based on the published biometrical calculation
methods. The surface of the leaves was measured
with the help of a mathematic model by the summing
of the geometrical figures distributed uniformly on an
sample of 30 leaves [12].
Some representative examples indentified on
the area are stored in the Herbarium of Botanical
Garden Galati and of the Pharmacy and Medicine
Faculty of “Dunarea de Jos” University Galati.
3. Results and Discussions
A.ursinum grows on big areas in the Luncavita
Forest only in north hills or near the water.
Sometimes this species can be found in other zones
but in low population.
The acompaining flora is composed by different
species like: Corydalis solida, Asarum europaeum,
Corylus avellana, Tilia tomentosa, Hedera helix,
Polygonatum latifolium, Scilla bifolia, Carpinus
betulus, Viola odorata, Ranunculus ficaria, Lamium
purpureum, Galium aparine, Geum urbanum,
Anthriscus cerefolium, Muscari botryoides and
others.
Our observations show us that under the shrubs
(Corylus avellana) known for its organic requestsrich
soils,deep,loose- and a rich litter,wild garlic
reaches the base of the shrubs [14].
Also,the power of growing and penetration of
the wild garlic was noticed even through the
woody,halfdescomposed fragments (Fig. 1).
Simple bulbs or two united can be found at a
relative depth small in the soil (3-5cm) especially in
the humus layer and they have good developed roots
and branched by 3÷15cm length (Fig.2). The
appearance of the leaves are leveled:first in March,
the second simultaneous with the third (by case). The
most of the plants have two leaves.
68
Fig. 1. The escape of the wild garlic through
the wood fragments ( original photo)
Biometric analysis consists of the following
items (Table 1): the leaf length (L), the leaf width (l),
the petiole length (Lp), the percentage ratio-leaf
finesse (l/L), number ribs (R), mass of green leafs
(M).
On the bulbs (Table 2, Fig. 4) were measured
the length (L), the mass (M), diameter (D) and
number of the roots (No.roots).
Our biometric studies made on the leaves of
A.ursinum shou that the rapport between the width
and the length of the limb leaf is conversely
proportional with the procedure of growing (Fig.3):in
March l/L=32÷37%; in April l/L=22÷30%; in May
l/L=16÷28%.
The form of the leaves at the immature plant
from March is predominant ovat-eliptical and at
mature in May is elliptical lanceolat.
The growing in length of the petiole is more
pronounced in April 104÷280mm.
The arch parallel nervatiune is numerical
constant in all of the phases.
The surface of the limb leaf mature is contained
between 71,24÷145,2 cm² and the weight of the
green leaves is 24,49 g/10 mature leaves.
So it can be confirmed that the foliar biomass
of the population of A.ursinum from Luncavita Forest
is lower by comparison with the morphological
studies on the same harvestes species from Botosani
area ( 35,85 g/10 leafes) [8].