Antigerminative Effects of Ethanolic Crude Extracts from Devil Tree (Alstonia scholaris) on Seed Germination and Seedling Growth against Selected Plants

Sawatdikarn Sanit

International Journal of Sciences, 2020, vol. 9, issue 11, 13-19

Abstract: The study of ethanolic crude extracts from the leaves of devil tree (Alstonia scholaris) were extracted by 95% ethanol and used at six concentrations (0 0.5 1.0 1.5 2.0 and 2.5 g/L). The six concentrations of devil tree crude extracts were tested on the inhibitory on seed germination and seedling growth of six tested crops (mimosa (Mimosa pigra), chinese kale (Brassica oleracea), amaranthus (Amaranthus viridis), barnyard grass (Echinochloa crus-galli), weedy rice (Oryza sativa) and waxy corn (Zea mays). Inhibitory of five characteristics (seed germination, shoot length, root length, seedling fresh weight and seedling dry weight) were recorded. The results showed that all crude extracts of devil tree (0.5 1.0 1.5 2.0 and 2.5 g/L concentrations) inhibited seed germination and seedling growth of six tested plants for 9-100% inhibition. whereas, the devil tree crude extracts at 2.5 g/L concentration showed the highest inhibition of seed germination and seedling growth in term of shoot length, root length, seedling fresh weight and seedling dry weight characteristics at 100% inhibition against three tested plants (mimosa, chinese kale as well as amaranthus). A raise of concentration of devil tree crude extracts showed increased inhibition of seed germination and seedling growth in six tested plants. The result is showed the antigerminative effects of devil tree (A. scholaris) as well as suggested that the utilization of the ethanolic crude extracts from the leaves of devil tree (A. scholaris) so as to weed management.

Keywords: Ethanolic Crude Extracts; Devil Tree; Seed Germination Inhibition; Seedling Growth Inhibition; Antigerminative Effects (search for similar items in EconPapers)
Date: 2020
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DOI: 10.18483/ijSci.2411

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