J C C Medeiros1, F F Coelho1, E Teixeira2. 1. Departamento de Biologia, Universidade Federal de Lavras, Lavras, MG, Brazil. 2. Secretaria de Estado de Meio-Ambiente e Desenvolvimento Sustentável, Divinópolis, MG, Brazil.
Abstract
Aquatic plants can use differential allocation (trade-off) of carbon among their structures depending on the nutrition concentration. Given that N and P are limiting in the growth of plants, our questions were: Are the N and P concentrations in S. auriculata related to the biomass allocation to its structures? Is a differential allocation of N and P between floating and submerged leaves? We evaluated the relation between the nutrients and the biomass allocation, and the trade-off among the leaves using the Spearman correlation. Our results showed that N and P concentrations in S. auriculata are related to the biomass allocation to its structures, and that there is no trade-off of these nutrients between "shoot and root". Thus, we can see the importance of N and P concentration in the biomass of S. auriculata, and why this plant is capable to development in different environments as a weedy.
Aquatic plants can use differential allocation (trade-off) of n class="Chemical">carbon among their structures depenpan>dinpan>g on the nutrition concenpan>tration. Givenpan> that N anpan>d P are limitinpan>g inpan> the growth of planpan>ts, our questions were: Are the N anpan>d P concenpan>trations inpan> pan> class="Species">S. auriculata related to the biomass allocation to its structures? Is a differential allocation of N and P between floating and submerged leaves? We evaluated the relation between the nutrients and the biomass allocation, and the trade-off among the leaves using the Spearman correlation. Our results showed that N and P concentrations in S. auriculata are related to the biomass allocation to its structures, and that there is no trade-off of these nutrients between "shoot and root". Thus, we can see the importance of N and P concentration in the biomass of S. auriculata, and why this plant is capable to development in different environments as a weedy.