This study is conducted in the laboratory of State board for seed testing and
certification (S.B.S.T.C) – Branch of Al – Diwaniyah ,to determine the effect
allelopathic of aqueous extracts of leaves eucalyptus tree (Eucalyptus ssp) (0 ,
1% , 2% and 4% g/100 ml) in seed germination & growth of seedling three
genotype from crop medical Roselle (Hibiscus sabdariffa L.) (White , Planned
and Red). The results showed to the existence of significant differences for all
traits, including the rate & speed of germination , length & dry weight of the
assembled root and shoot between the stress allelopathic compared to the control
treatment in addition to the differences of the genotypes and interaction with
allelopathic treatments.