Int. J. Biosci.1( 6), 70-80, December 2011
Allelopathic potential of twelve local varieties of grapevine Vitis vinifera fruits: taefi; zareg-dohuok; Baetmuni; Black-manga; Sarqala-bakrajo; Awelka; Rash-merii; Mala-Hassan; Ashgar-basraha; Kamalii; Toli-mawelian and Shekh-nuraddin on some germination and growth parameters of lettuce seeds Lactuca sativa has been investigated . The aqueous extracts caused significant inhibitory effects on germination rate; germination speed; radical length; plumule length; radical, plumule and total seedlings dry weight. Bioassays indicated that the inhibitory effects were increased with increasing the aqueous extracts concentration. These results indicated that there is a considerable variation of allelopathic activity that could be utilized in the field of controlling weed plants.
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