Materıals and Method
The material of the research is unique Cotinus coggygria
Scop.
Species related to the flora of Azerbaijan “in situ”
conditions.
Cotinus coggygria Scop. species of Anacardiaceae Lindl.
families is a very branched shrub or small tree up to 2-4 m
tall, described from the Mediterranean - East Asia -
Southern Europe. The body is slightly cracked. The leaves
are pear-shaped, glabrous on the top, gray on the bottom,
usually pile-shaped, with deciduous leaves, 8-10 cm long
and 3-7 mm wide. The petals are green and 2 mm long. The
vascularization of the leaf is feathery. The flowers are white,
small, 3 mm long and numerous scattered brooms up to 20
cm long. All flowers of the flower stalk are very stretches
and covered by elongated, reddish or pink hairs. The fruit is
black, 2.5-3 mm long and 2-3 mm wide. The ovary is a
longitudinally veined fruit. The stamens are 5, 10 or
numerous and are located on the edge of the disc with the
petals.
Species is widespread in Azerbaijan only on dry slopes and
rocky areas. The main reason for the decline is the impact of
factors such as cutting the plant, the collection of leaves.
C.coggygria is propagated by seeds and vegetatively. The
absolute weight of the seed is 9 grams. Plant flowers in
May-June and bears fruit in August-September.
The aim was to study the ontogenetic age characteristics of
the plant, to reveal the role of biological features in the
reduction of habitats. A number of methods were used
during the research [Molchanov et al., 1967; Semenova,
2002]
[20, 11]
. The state of cenopopulations (CP) of
C.coggygria species was evaluated in terms of number and
age of individuals by the method of their complete transfer
to the test sites. The definition of age groups of individuals
was carried out in accordance with the classification of T.А.
Rabotnov [1950]
[12]
, A.A.Uranov [1975]
[13]
and etc.
[6, 7]
.
The type of CP was established in terms of the number of
age groups and their relationship. As an integral
characteristic of demographic structure of the CP of iris
species used the following population indicators: age index -
International Journal of Botany Studies
www.botanyjournals.com
250
[Uranov, 1975; Cenopopulations of plants, 1988]
[13]
;
index of efficiency - [Zhivotovsky, 2001]
[4]
.
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