Marija Saric-Krsmanovic, Jelena Gajic-Umiljendic, Tijana Djordjevic, Ljiljana Radivojevic, Ljiljana Santric, Dragana Bozic, Sava Vrbnicanin
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引用次数: 0
摘要
研究了青核桃果提取物对三种杂草(Chenopodium album, Amaranthus retroflexus, Daucus carota)种子萌发和早期生长的潜在化感作用,以及对玉米(Zea mays)种子萌发和早期生长的植物毒性作用。另一个目的是分析植物提取物并评估其抗氧化活性。采用FRAP法对植物提取物的抗氧化活性进行了评价,评价了其对DPPH(2,2-二苯基-1-苦味酰肼)自由基的中和能力和对铁的还原能力。青核桃果浸膏溶液浓度越低,对总发芽率和幼苗长度的抑制率越低。幼苗生长参数对三种杂草的敏感性均高于总种子萌发率。虽然种子生物测定结果显示对被试杂草的萌发和早期生长有很高的抑制作用,但它们也显示出在培养的麦穗草的早期生长中具有植物毒性活性。
Antioxidant activity, phytotoxicity and allelopathic potential of green walnut (Juglans regia L.) fruit extract
The potential allelopathic effect of a green walnut fruit extract on seed germination and early growth of three weed species (Chenopodium album, Amaranthus retroflexus, Daucus carota) was tested, as well as its phytotoxic effect on seed germination and early growth of maize (Zea mays). Another objective was to analyze the plant extract and assess its antioxidative activity. Antioxidative activity of the plant extract was evaluated based on its ability to neutralize DPPH (2,2-diphenyl-1-picrylhydrazyl) radical and capacity for iron reduction using the FRAP method. Inhibition of the evaluated parameters (total germination and seedling length) decreased proportionally with decreasing concentrations of extract solution of green walnut fruit. The parameters of seedling growth were also found to show greater susceptibility than total seed germination of all three of the tested weed species. Although the seed bioassay results indicated a high inhibitory effect on germination and early growth of the tested weeds, they also revealed phytotoxic activity during early growth of the cultivated Z. mays.