Effects of aqueous extracts from Artemisia afra parts and soil on seed germination and early seedling development in selected plant species

J. A. Hansen-Quartey, K. Nyamapfene, S. Materechera
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引用次数: 8

Abstract

Aqueous extracts from leaves, stems, roots of the aromatic shrub Artemisia afra and soil on which Artemisia was grown, were used to investigate their inhibitory effects on germination and seedling development of maize (Zea mays), bean (Phaseolus vulgaris) and ryegrass (Lolium perenne). Dilutions of 1:1,1:2.5 and 1:5 v/v of the original extracts were prepared by adding deionised water to the original (undiluted) extracts. Deionised water and extracts from soil on which A. afra had never grown were used as controls. Extracts from A. afra soil and plant parts significantly (p < 0.05) reduced seed germination, height and dry matter of all the seedlings compared with the controls. However, as the dilution of the original extracts increased, there was a significant increase in seed germination and dry matter yields. This observation was consistent in all the plant species indicating that there was reduction in the concentration of the compounds inhibiting germination and seedling growth. The inhibitory effects ...
青蒿部分水提物和土壤对植物种子萌发和幼苗早期发育的影响
以芳香灌木阿芙拉蒿(Artemisia afra)的叶、茎、根和土壤为材料,研究了其对玉米(Zea mays)、豆类(Phaseolus vulgaris)和黑麦草(Lolium perenne)萌发和幼苗发育的抑制作用。通过在原始(未稀释的)提取物中加入去离子水,制备1:1,1:2.5和1:5 v/v稀释的原始提取物。去离子水和从未生长过afra的土壤提取物作为对照。与对照相比,土壤和植株部位提取物显著(p < 0.05)降低了所有幼苗的种子发芽率、高度和干物质。然而,随着原始提取物稀释度的增加,种子发芽率和干物质产量显著增加。这一观察结果在所有植物物种中都是一致的,表明抑制发芽和幼苗生长的化合物的浓度有所降低。抑制作用……
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