Variações na morfoanatomia foliar de Aechmea lindenii (E. Morren) Baker var. lindenii (Bromeliaceae) sob distintas condições ambientais

Abstract

It is found totally or partially exposed to solar radiation and in different life forms -terricolous, rupicolous and epiphytes. The aim of this work was to compare morphoanatomical leaf characteristics of A. lindenii var. lindenii in distinct environmental conditions. On Santa Catarina Island (Florianópolis, SC), the following were collected: leaves of terricolous plants in the herbaceous restinga (high solar radiation), rupicolous from rocky coast (high solar radiation), terricolous and understory epiphytes (low solar radiation) in the arboreal restinga and understory rupicolous (low solar radiation) from hillside Atlantic rain forest. We measured length, breadth and area of leaf blade and sheath, stomatal density, length and breadth of guard-cells; width of leaf blade and structural components. Qualitative anatomical characteristics are similar in the distinct conditions analyzed. Low solar radiation determined greater expansion of the leaf area, due to stretching of the blade. Leaf blade and sheath have greater breadth under high solar radiation. Stomatal density was greater in leaves of plants in high solar radiation. Total blade leaf width was smaller in leaves of terricolous plants under high solar radiation, nevertheless, statistically significant differences were not found among other conditions.

Incomplete lineage sorting and hybridization in the evolutionary history of closely related, endemic yellow‐flowered Aechmea species of subgenus Ortgiesia (Bromeliaceae)

“…Some of these species also present morphological plasticity, meaning that their distinct morphology depends on their habitat. Plasticity is particularly apparent in shaded vs. sunny environments (Reitz, 1983; Lenzi et al, 2006; Voltolini and Santos, 2011). Several yfAsO species can be found in sympatry, as well as sharing pollinators and flowering times (Smith and Downs, 1979; Reitz, 1983; Lenzi et al, 2006; Dorneles et al, 2011; Kamke et al, 2011; Goetze et al, 2016b).…”

Estimativa De Área Foliar Por Meio De Relações Alométricas Em aechmea blanchetiana (baker) L. B. Sm Sob Distintas Condições De Luminosidade

“…Estudos realizados com Aechmea lindenii (E. Morren) Baker por Lenzi et al (2006) e Voltolini & Santos (2011) apresentaram resultados semelhantes ao encontrado neste trabalho, onde folhas sob alta irradiação apresentaram menor comprimento e maior largura quando comparadas com folhas sob baixa irradiação solar.…”

ANATOMIA DOS ÓRGÃOS VEGETATIVOS DE Cryptanthus beuckeri E. MORREN (BROMELIACEAE)

“…A folha em vista transversal apresenta uma epiderme uniestratificada comum em outras espécies de bromélias (TOMLINSON, 1969;FERREIRA et al, 2007;VOLTOLINI & SANTOS, 2011;KRAHL et al, 2013) com células quadrangulares revestida por cutícula lisa e delgada (Figura 4A e 4B). Na face adaxial o lume apresenta o formato triangular, devido ao espessamento das paredes anticlinais e periclinal interna (Figura 4A) e na face abaxial o lume apresenta o formato lenticular, devido ao espessamento ( Figura 4B).…”