Phytotoxicity and allelopathic potential of Juglans regia L. leaf extract

• DOI: 10.3389/fpls.2022.986740
• Publication Date: 2022-10-05T08:52:43Z
• Authors: Tijana Đorđević; Rada Đurović-Pejčev; Marija Stevanović; Marija Sarić-Krsm...; Ljiljana Radivojević; Ljiljana Šantrić; Jelena Gajić-Umil...
• Keywords: Allelopathy; Myricetin; Juglone; Phytochemical

Implementation of plant extracts that are rich in phytochemicals and have the allelopathic potential for weed management could help reduce use chemical herbicides. The present study investigated herbicidal walnut (Juglans regia L.) leaf extract (WLE) against two weeds, Amaranthus retroflexus L. Chenopodium album L., by testing vitro their seed germination seedling growth, then evaluated vivo oxidative stress potted plants. effects were also tested on maize (Zea mays to eliminate possible negative impacts a cultivated plant. Total phenolic acids total flavonoid content determined prior bioassays, followed separation analysis flavonoids high-performance liquid chromatography (HPLC). Phytochemical revealed obtained was notably compounds, while HPLC confirmed presence (+)-catechin, luteolin, myricetin, rutin, (-)-epicatechin, genistin, protocatechuic acid, caffeic acid as major components. results bioassays significant impact growth well weeds grown pots. Although it affected similar less sensitive treatment, did not terms plants findings show may promising role replacing herbicides maize.