Results and theır Dıscussıon
The following species Cotinus coggygria have been
identified for the first time for the flora of Azerbaijan var.
typis - the lower part of the leaf and young shoots are bare
(hairless) - a common species, found in shady places; var.
pubescens Engl. - the lower part of the leaf and the
unisexual shoots are short-haired; var. sublaevis Novop. -
the lower part of the leaf and young shoots are weakly hairy
as a result of many years of research.
The ontogenetic age characteristics of the plant during the
study were divided into 4 periods: Latent period - a period
that reflects the formation of the seed after fertilization in
the plant and its morphological features; Virgin period -
age-related growth and developmental changes in plants:
seedlings, juveniles, young and old vegetative plants (period
before flowering); Reproductive period - covers the
generative period in young, middle and old plants (blooms
but does not bear fruit, blooms but does not form full-
quality seeds, blooms and produces full-quality seeds);
Senile period - a period of reflects the changes that have
taken place in the last years of plant life.
Latent period - after fertilization other structural elements
that form the structure of the seed begin to form during the
development of the embryo as study showed. One of these is
the endosperm - a multicellular reserve nutrient tissue. This
tissue contains nutrients necessary for the development of
the embryo. In some plants, reserve nutrients do not
accumulate in the form of a separate tissue (endosperm), but
in the embryonic leaves, ie in the nuclei (Semenova 2002)
[11]
.
Rare and endangered C.coggygria species is naturally
occurring in Azerbaijan. The study of the formation and
structural features of the seeds of the species showed that
the seeds are divided into 3 types according to their
morphological
features:
primitive,
intermediate
and
advanced types. The endosperm completely fills the seed
cavity and the embryo is not morphologically well
developed in primitive seeds (Alexander, 2009). The
endosperm is normally developed in the middle type.
However, the seed does not completely fill the cavity, and
the embryo is well developed. No endosperm was observed
in the seed cavity under studying the structure and
characteristics of the seeds of the C. coggygria plant.
The absence of endosperm in the seed does not adversely
affect its viability, on the contrary, despite the absence of
endosperm in the seeds as shown researches. The viability
of their seeds is 80-95%.
In order to determine the growth dynamics and age of
C.coggygria in the selected 2 populations all individuals
encountered from the juvenile to cynical periods were
recorded, and the composition of the ontogenesis of
cenopopulations (CP) after the results were calculated
according to the methodology (Table 1).
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