Phytotoxicity of Ecbalium elaterium(L.) A. Rich on seed germination and root elongation of radish
الكلمات المفتاحية:
Aqeous extract، Ecbalium elateriumالملخص
Phytotoxicity of aqueous extracts of Ecbalium elaterium (L.)A.Rich. was evaluated on seed germination , root length , fresh and dry weight of t Raphanus sativus L. Target species were grown on Petri dishes supplemented with 5ml of aqueous extract prepared at concentration of 1 , 5 and 10 g/100ml extracted from leaves , stems , Roots and fruits of the plant .The results show that aqueous extract of plant parts of Ecbalium inhibited seed germination in radish at all concentration , while they increased it at 1% of aqueous extract of fruits. The results also show inhibition of root length in radish at all concentration , while they stimulated at 1% of aqueous extract of fruits .In radish the result shows that both concentration 5% and 10% of Ecbalium parts decreased total fresh weight but 1% concentration increase total fresh weight of the same plant. In radish total dry weight decreased at both concentration 5% and 10% of fruits, stems and leaves extracts while increased at 1% in all plant parts and 1% and 10% of roots extract . Finally the obtained results reported in this thesis suggests that Ecbalium can cause grate losses in crop yield through it is release of allelochemicals that can inhibit seed germination and seedling development . On the other hand allelochemicals produced by that plant may be used as natural pre-emergence herbicides to control many weeds in crop fields.