Organizing co mmittee

GROWTH-PROMOTING ACTIVITY OF ALLIUM CEPA 
EXTRACT 
 
U.B. Mamarozikov
1
, M.R. Berdimuratova
2
, P.A. Nurmakhmadova
1
, 
N.K. Khidyrova
1
 
 
1) S.Yu. Yunusov Institute of the Chemistry of Plant Substances Academy of sciences of 
the Republic of Uzbekistan st. Mirzo-Ulugbek, 77, 100170 Tashkent 
2) Tashkent Institute of Chemical Technology 
e-mail
: 
[e-mail] 
 
At the present time scientific development in the world, together with the 
improvement of agricultural biotechnology, the number of preparations based on plant 
extracts is increasing. Such agents are taking the place of such specific synthetic 
preparations as they demonstrate their activity against harmful insects (insecticide), 
growth properties, against harmful fungi and many others. Such natural means are of 
great importance in protecting agricultural crops from pests and increasing their 
productivity. Since the extracts are natural, they do not have a negative effect on human 
health, and the accumulation of harmful substances in the body is prevented [1]. 
Based on the above and literature data, the bark of 
Allium cepa
was extracted and 
thoroughly dried. Dry bark was extracted in 96% ethyl alcohol. The resulting alcohol 
extract was evaporated in a rotary evaporator and 0.71 grams of dry extract was 
obtained. The 1% water solution of the obtained extract was tested in the 
organic 
synthesis and plant protection
laboratory of the institute. Cucumber seeds of the variety 
"Orzu" and wheat seeds of the variety "Asr" were used in the experiments in order to 
determine their growth-promoting and herbicide activity. The test process was carried 
out according to the established methods [2]. The concentration of the extract is from 
1% to 0.00001%. The biostimulator "Uchqun" was used as a etalon. Preliminary 
screening results showed that M-01 fractions at a concentration of 0.0001% reduced 
wheat root and stem length by 12.0% and 8.6%, respectively, compared to the control, 
and in cucumber, these indicators were 37.7% and 38.8% showed growth-promoting 
activity respectively.
References: 
1. www.agrobase.ru 
2. Yu.V. Rakitin's method was used. and Rudnik V.E. - "Primary biological 
evaluation of chemical compounds as plant growth regulators and herbicides" (Methods 
for determination regulators and herbicides, L, Nauka 1966, p. 182-197).