Allelopathic effect of invasive plant (Clidemia hirta) on seed germination of native plant (Impatiens platypetala)

Abstract

Ismaini L. 2015. Allelopathic effect of invasive plant (Clidemia hirta) on seed germination of native plant (Impatiens platypetala). Pros Sem Nas Masy Biodiv Indon 1: 834-837. Clidemia hirta is an invasive species which probably exerts allelopathic effects to invasion native species. The objectives of this study were to determine whether C. hirta effects the germination and growth of native species Impatien platypetala by allelopathic function. The experiment used was Completely Randomized Design with seven treatments. The treatments were control, distilled water extract of 10, 20, 40, 60, 80 and 100% concentration of C. hirta. Results showed that distilled water extract of 60, 80 and 100% concentration of C. hirta were significantly reduced seed germination by 43.3-63.3%. That extracts also suppressed shoot lengths 0.52, 0.33 and 0.37 cm and root lengths 0.4, 0.25 and 0.24 cm, respectively.