Study of some secondary metabolites content and allelopathic effect of various organs of Fumaria parviflora weed on of Avena ludoviciana

Basically, reduction in crop yield is due to the competition and allelopathy of weeds. This study was aimed at assessing some secondary metabolites content and evaluates the allelopathic potential of various organs of Fumaria parviflora on morpho-physiological and biochemical characteristics of Avena ludoviciana seedling. Aqueous solution of organs was prepared using 5g plant material/ 100ml D.W and applying it on 7- day old seedlings of Avena ludoviciana. The quantification assay of alkaloids and total phenols in various organs of Fumaria parviflora indicated that leaf and flower organs had the highest content of these compounds, compared to root and stem. According to the results, the allelopathic compounds of various organs of Fumaria parviflora had a different inhibitory effect on root length, seedling length, plant fresh and dry weight, leaf area, and the content of total chlorophyll, carotenoids and proteins of Avena ludoviciana. The most negative effect on the traits of Avena ludoviciana was obtained in the leaf organ of Fumaria parviflora. In addition, the content of prolin and enzymes activity of catalase, guaiacol peroxidase and ascorbate peroxidase were increased under aqueous extract of v organs of Fumaria parviflora over the control.