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Allelopathic Activity of Calligonum comosum on Germination and Seedling Growth of Chenopodium murale L.

General Directorate of Education in Anbar, Ministry of Education, Ramadi, Anbar, Iraq
*(e-mail :;; Mobile : 201123079)
(Received : January 24, 2019; Accepted : )


Allelopathy is a natural ecological phenomenon. It has been known and used in agriculture since ancient
times. This paper aims at studying the allelopathic potential of C. comosum on the germination and early
seedling growth of Chenopodium murale. Total phenols, tannins, saponins, flavonoids and alkaloids were
determined in C. comosum. In our study, the IC50 value of C. comosum extract was 2.11 mg/ml compared
to standard catechol (0.15 mg/ml). The methanol extract of C. comosum at 40 g/ml inhibited the germination
of C. murale by about 91.32%, while the lowest concentration (10 g/ml) inhibited the germination by
13.68%. On the other hand, the phytotoxic effect of methanolic extracts from C. comosum at 40 g/ml
inhibited the radicle and plumule growth of C. murale by 89.34 and 78.69%, respectively. While at the
lowest concentration (10 g/ml), C. comosum extract showed the lowest inhibition percentage (23.54 and
26.58, respectively) of radicle and plumule growth.

Key words :Vegetable production, musculoskeletal discomfort, health hazard