TITLE:
Allelopathic Effect of Aqueous Extract of Argemone mexicana L on Germination and Growth of Brachiaria dictyoneura L and Clitoria ternatea L
AUTHORS:
Hassan S. Namkeleja, Mokiti T. Tarimo, Patrick A. Ndakidemi
KEYWORDS:
Allelochemicals; Root Length; Shoot Length
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.4 No.11,
November
13,
2013
ABSTRACT: The present
study was conducted in the laboratory to investigate the allelopathic effect of
Mexican poppy (Argemone mexicana L.) to the germination and growth
parameters of two native species Brachiaria dictyoneura L and Clitoria ternatea L.
Different concentrations of leaf and seed aqueous extracts from Argemone mexicana (0%, 25%, 50%, 75% and 100%) were evaluated.
Results showed that seed germination, root length, shoot length, seedling length,
fresh weight and dry weight of B. dictyoneura and C. ternatea seedlings were
significantly reduced by leaf and seed extracts compared with control
treatments. Roots were more affected than shoots; and leaf extract was more
suppressive than seed extracts. From
the results, it is concluded that leaf and seed extracts have some allelochemicals with inhibitory effect
on germination and growth of the tested plant species.