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Uso de Estrela Branca (Nymphoides humboldtiana) para paisagismo em lagos

机译：利用白星（Nymphoides humboldtiana）在湖泊中美化环境

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White Star ( Nymphoides humboldtiana ), an aquatic-environmental native species of Brazilian flora, was selected in order to be used as ornamental plant in lakes. White Star plants were submitted to two water levels (high water level, up to 30 cm water depth and, low water level until substrate saturation) and two light intensities (full sun and 50% shading) to evaluate vegetative and flowering development. The experimental design was completely randomized, in a subplot scheme, being the water level the main plot and luminosity the subplot. Seven replicates were performed, and the sample unit consisted of one plant. Data related to number of leaves and flowers, length and diameter of petioles and leaf area were submitted to analyze of variance and regression. We observed an increase in number of leaves and flowers in the treatment of high water level in full sun, and an increase of petiole length in high water level with shading. No difference between leaf area of plants grown under full sun and with shading (p0.05) was observed. At low water level, plants presented lower vegetative development than those grown at high water level, besides the flowering inhibition in shaded condition. These results demonstrated that White Star can be used in ornamental lakes with a water depth of at least 20 cm above the rhizome and exposed to full sun.
机译：选择白星（Nymphoides humboldtiana）是巴西植物的一种水生环境原生物种，以便用作湖泊中的观赏植物。将白星植物置于两个水位（高水位，最高水深30厘米，低水位直到基质饱和）和两个光照强度（全日照和50％遮荫）下评估营养和开花发育。在子图方案中，实验设计是完全随机的，水位是主要图，亮度是子图。进行了七次重复，样品单元由一株植物组成。提交了与叶和花的数量，叶柄的长度和直径以及叶面积有关的数据，以分析方差和回归。我们观察到在充满阳光的高水位条件下，叶片和花朵的数量增加，而在高水位下随着遮荫，叶柄长度增加。在全日光下和遮荫下生长的植物的叶面积之间没有发现差异（p <0.05）。在低水位条件下，植物的营养发育要比在高水位条件下生长的植物低，除了在阴凉条件下抑制开花。这些结果表明，白星可用于水生植物，其根深至少在根茎上方20厘米，并在阳光直射下可以观赏。

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