Effects of clonal integration on allelopathy of invasive plant <i>Wedelia trilobata</i> under heterogeneous light conditions

Abstract Plant invasion is one of the most serious threats to ecosystems worldwide. When invasive plants with ability clonal growth invading or colonizing in new habitat, their interconnected ramets may suffer from heterogeneous light. Effects integration on allelopathy are poorly understood under light conditions. To investigate effects plant Wedelia trilobata conditions, a pot experiment was conducted by using its fragments two successive ramets. The older were exposed full light, whereas younger ones subjected 20% each fragment adjacently grown target (one tomato seedling) pot. Stolon between either severed retained intact. In addition, seedlings as plant) contrast. Compared severing stolon, biomass accumulation, foliar chlorophyll and nitrogen contents, fluorescence parameters net photosynthetic rates well root length activity, significantly decreased when stolon W. Under transportation sharing carbohydrate enhanced young treatment. It suggested that be important for colonization