Influence of shading on the leaf morphoanatomy and tolerance to glyphosate in Commelina benghalensis L. and Cyperus rotundus L.

摘要: The efficiency of the herbicide glyphosate in weed control is associated with leaf morphology that a character influenced by environmental factors such as light. This study evaluated morpho-anatomy and Commelina benghalensis Cyperus rotundus cultivated under shading treated glyphosate. was conducted area without vegetation weeds were grown pots. One assay per species 33 factorial design, factor 1 represented doses 0, 720 1440 g ha -1 2 three levels: 50 or 70% shade. assays randomized blocks five replicates, each replicate consisting one pot two plants C. rotundus. Both showed 50% reduction tolerance to when they shade compared sun. Plants significant increase (161 46 %, respectively) However, caused on thickness both species. In benghalensis, exposure promoted turgor loss trichomes; trichome cuticle ruptures. changes morphoanatomy are related increased controlling these shaded environments. Our results suggest reduced (50%) required for