Table 1: Age (growth) structure of
C.coggygria cenopopulation
CP № CP type
Growth phases of ontogeny (in %)
Indices
j
im
V
g
1
g
2
g
3
ss, s
Ω
3
young
50,2 20,5
11
19,0 11,7 12,1 6,9 0,27 0,46
5
transition 41,1 64,6 20,1 4,6
7,8
3,2
1,5 0,09 0,22
1
2
4
mature
6,34
8,40
25,1
21,7
60
20,9
8,45
6,70
12,1
19,9
27,2
21,2
21,9
26
33,1
25,8
19
33,3
9,4
7,7
11,4
0,41
0,43
0,58
0,70
0,71
0,77
Mainly in populations are found all groups of plant
ontogeny, 3 - young, 5 - transitional, 1, 2, 4 - mature
populations as can be seen from the table 1 and figure
(diagram 1). Efficiency index of the 1st, 2nd and 4th
populations is high in the experiments conducted during the
study of the cenological condition.
The spectrum of ontogeny in each population is reflected in
the histogram (diagram 1).
Fig 1: Spectrum of ontogeny in the population (SP) of
C.coggygria species
Conclusion
Thus, research has shown that the extinction of rare plants
can be caused not only by anthropogenic factors, but also by
defects in their reproductive organs. The latent period of the
ontogeny of plants ends with the germination of seeds. So,
the latent period reflects the latent lifestyle of the plant in its
embryonic state and can last from 4 months to 23 years
depending on the species.
International Journal of Botany Studies
www.botanyjournals.com
251
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