Study of allelopathic effects of Artemisia aucheri Boiss. on some physiological and biochemical parameters of Brassica napus L. and Eruca sativa L.

Allelopathy is one of the terms that introduces the biochemical interactions-stimulating or inhibiting the plants. In this research has been studied the effects of different concentrations aqueous extract of aerial parts of Artemisia aucheri on seedling growth of (Brassica napus L.) and(Eruca sativa L.) with the factorial design under three replications. Also in the pot experiment, concentrations of 10, 25, 35 and 50% aqueous extract of aerial parts have been used and growth, pigment content,flavonoid, membrane lipid peroxidation and the activities of catalase and peroxidase were studied. The results show that the aqueous extract Artemisia aucheri effect on growth of Brassica napus L and Eruca sativa L. Also the experiment results showed that with increasing concentration of plant extract, growth and photosynthetic pigments such as chlorophyll a, b and carotenoids in Eruca sativa L decreased significantly, but the Brassica napus L plant this items did not any significant relation. The findings in this research showed that the aqueous extract concentrations Artemisia aucheri significantly increase the amount of flavonoids and malondialdehyde enzyme, and the activities of antioxidant enzymes catalase and peroxidase decreased in both plants listed. In this study, the inhibitory effect of aqueous extract of Artemisia aucheri on Brassica napus was more than Eruca sativa weed. Therefor Artemisia aucheri can control the increase of weeds, especially Eruca sativa L.

Keywords:

Allelopathy , Artemisia aucheri , Brassica napus L. , Eruca sativa L.