Allelopathic Potential of Common Mallow (Malva sylvestris) on the Germination and the Initial Growth of Blanket Flower, plumed cockscomb and Sweet William

ABSTRACT: An experiment was conducted to determine the allelopatic effects of Common Mallow weeds aqueous extract allelopathic on the Blanket Flower, Plumed cockcomb and Sweet William seeds germination indices. This study was done in a completely randomized design with 3 replications in the faculty of agriculture of Shahid Chamran University of Ahvaz in 2010. Sample treatment included various extract levels with a concentration of 2.5, 5, 7.5 and 10% and distilled water as a control treatment. In order to find the germination indices, the length and dry weight of plumulue and radicals are defined on the basis of the International Seed Testing Association. The analysis of their variance was performed with the use of sas software, and the Excel software was used to draw the required charts, and the Duncan test was used to compare the data average. The results indicated a meaningful difference in 1 and 5 percent statistical level. The results indicated that the effect of Mallow weed aqueous extract of Allelopathy inhibitory effects on germination and vegetative properties Blanket Flower, Plumed cockscomb and Sweet William seeds as with increasing the concentration of Common Mallow extract reduce radicle length, plumule length, fresh weight and dry weight of radicle and plumule in various plants. The seeds germinated significantly Blanket Flower, Plumed cockscomb and Sweet William and 2.5% in treated compared with control at the 1% probability level was significantly decreased with increasing concentration, the germination rate is reduced. The water extracts of the Common Mallow had the greatest inhibitory effects on germination and primary growth of Blanket Flower, compared to those of Plumed cockscomb and Sweet William. In all three types of seed root length and root dry weight and significantly reduced at concentrations above 2.5%. The Blanket Flower in concentrations of 5, 7.5, 10% and Plumed cockscomb and Sweet William in concentrations 10, germination was almost completely inhibited. Allelopathic and inhibitory effects on the traits measured in Blanket Flower was a little over Plumed cockcomb and Sweet William.