Allelopathic Potential of Acacia mearnsii De Wild
2009; International Digital Organization for Scientific Information (IDOSI); Volume: 7; Issue: 12 Linguagem: Inglês
ISSN
1991-6426
Autores Tópico(s)Chemical synthesis and alkaloids
Resumo3 Abstract: The allelopathic potential of the leaves (Lv), leaves + stem (LvS), bark and root of Acacia mearnsii was studied. This was done by examining The effect of aqueous extract and the plant debris on seed germination and emergence of cabbage (Brassica oleracea), African love-grass (Eragrostis curvula) and maize (Zea mays). Germination of cabbage and African love-grass were significantly (P Lv >Root > Bark. Germination index was lower in all the extract treatments compared to the control for both cabbage and African love-grass. This implies that extracts of all the plant parts exhibited varying degree of inhibition to seed germination. The application of debris from various parts of A. mearnsil resulted in 6.7 - 46.7%, 50 - 70% and 0 -33% suppression in the emergence of cabbage, African love-grass and maize seeds respectively. This study lends scientific evidence to the allelopathic potentials of A. mearnsii and the variation in effect among different parts of the plant. We, therefore, conclude that A. mearnsii may be further explored in the biological control of weeds. Key word: Acacia mearnsii Allelopathy Seed germination Seedling emergence and debris bioassay
Referência(s)