ALLELOPATHIC IMPACT OF LEAF AND ROOT EXTRACTS FROM RYEGRASS HYBRID TYPE AND WHEAT | Journal of Glo

Secondary metabolites that are phytotoxic to some extent are compounds found in nature that can be used to control weeds. The goal of this dose-response study was to look at the effects of wheat and ryegrass hybrid type roots and above-ground plant components. To examine if phytotoxic effects on lettuce seed germination, radicle, and cotyledon development might be linked to a specific allelopathic chemical, researchers used thin layer chromatography (TLC). The activity on TLC plates was dispersed throughout several zones, all of which fluoresced under UV light. The ethyl acetate extract from fresh, immature wheat leaves inhibited lettuce germination significantly at zone 5, whereas it also stimulated lettuce germination significantly at zones 7 and 8. The concentration-dependent responses of lettuce to extracts suggest that fractions may contain allelochemicals, with ethyl acetate having the most promise. Wheat and ryegrass hybrid type extracts had both positive and negative impacts on lettuce seedling development. Allelochemicals found in leaf and root tissues showed that wheat plants can synthesise and leak phytotoxic allelopathic compounds through their root system, which could limit ryegrass hybrid type root growth.

Please see the link :- https://www.ikprress.org/index.php/JOGAE/article/view/2193