Organizing co mmittee

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Poster presentation 
96 
STUDY OF TERMITOCIDAL PROPERTIES 
OF Inula britannica, Inula helenium, Inula grandis PLANT 
EXTRACTS
 
V.N. Akhmedov
1
, D.E. Dusmatova
2
, R.F. Mukhamatkhanova
2
,
B.R. Kholmatov
1
, I.D. Sham'yanov
2
 
1
) Institute of Zoology AS RUz, 100053, Bogishamol st., 232b,
e-mail: [e-mail] 
2) S.Yu. Yunusov Institute of the Chemistry of Plant Substances Academy of sciences of 
the Republic of Uzbekistan st. Mirzo-Ulugbek, 77, 100170 Tashkent,
e-mail: 
[e-mail]
 
In many regions of Uzbekistan, termites do seriously damage apartment houses, 
buildings, historical and cultural monuments, and other wooden parts of constructions, 
and it should be noted that these insects are an unprecedentedly damaging pest. In 
situations where insecticides are used repeatedly against termites, their survival is high 
due to their resistance (adaptability) properties. Therefore, one of the main tasks today 
is to identify and implement natural biologically active agents that have termiticidal 
activity against termites and are environmentally safe. 
The genus 
Inula
L. includes about 100 species. They are widespread in Eurasia, and 
32 species are also found in the CIS countries. In particular, 9 species grow in 
Uzbekistan, included 
Inula helenium, I. grandis, I. britannica
[1]. 
Laboratory experiments were conducted to investigate the termiticidal properties of 
extracts prepared from 
Inula britannica, Inula helenium,
and
Inula grandis
plants 
against termites belonging to the 
Anacanthotermes
genus distributed in the territory of 
Uzbekistan.The experiments were carried out in laboratory conditions at a temperature 
of +22 - +26°С. 10 worker termites were placed in clay plastered and sterilized Petri 
dishes. The extracts being tested are sieved 2×2 cm size filter paper and was fed to the 
termites. For control, filter papers with distilled water were given to the termites. Petri 
dishes with termites were kept in a cool and dark place. A daily account of the 
conducted experiments was kept. The number of surviving, paralyzed and dead termites 
was counted. Each experiment was performed in 5 replicates. Biological efficiency 
against termites was calculated based on Abbot's formula. 
Preliminary results obtained from the laboratory experiments showed extracts 
prepared from 
Inula britannica, Inula helenium, Inula grandis
have high (65-75%) 
termiticidal activity against termites belonging to the genus 
Anacanthotermes
. Based on 
the results of the above experiments, it is intended to study the chemical composition of 
Inula britannica, Inula helenium
, and 
Inula grandis
plants in depth, and to continue the 
experiments in an expanded situation in the future.