journal of al-qadisiyah for pure science(quarterly)

Abstract

This study included the efficacy of the aquatic and alcoholic extracts for fruits of oak fruits (Quercus sp.) and some fungi disinfectant in the growth of Alternaria alternate that isolated from seeds of Spinacia oleracea , through their effect on radial growth and dry weight for some fungi isolated from this seeds and in germination of its spores , length of germinal tube , and also testing the effect of this treatments in germination of seeds in sterilized and unsterilized soil.
The preparation chemical detection of active ingredient shwed that aquatic and alcoholic extracts of Quercus sp. contained tannins , resins , saponins , flavonoides and venoles . The results showed that the alcoholic extracts of Quercus sp. has significant effect forgrowth of tested fungi on solid culture medium (PDA) , In measuring with controlled treatment at level of possibility 5 % also the treatment has significant inhibited effecton dry weight , germination of spores , length of germinal tube and also of in germination of Spanish seeds insterilized and unsterillized soil , and the concentration 15 % the most effect and nearest to the action of fungi disinfectant (Tapsen 50 , Diathine M 45 , Mancozeb 80) in concentration 1 gm /Lt .
The Testing of measuring Infra Red Spectrum (FTIR) showed the predence of active compound Elliagitannin and it is a tannin compound has the most effect in the inhibition of fungi and increase that belongs to venoles polymers.