Análises anatômicas do hipocótilo e caule foram obtidas por secções transversais e paradérmicas utilizando técnicas clássicas. Análises do crescimento e desenvolvimento foram determinadas por medidas de comprimento, massa seca, teor de clorofilas e carotenóides. Este estudo teve por objetivo investigar a germinação e o desenvolvimento pós-seminal in vitro, em água e ágar, e a morfoanatomia do caule de indivíduos adultos, crescendo no ambiente natural de Rhipsalis neves-armondii, Rhipsalis teres e Lepismium cruciforme, ocorrentes em Santa Catarina. As diferenças no processo de germinação e desenvolvimento inicial, entre espécies vegetais são de interesse na produção e estabelecimento de mudas. Resumo Cactáceas epífitas com potencial ornamental são encontradas na Mata Atlântica brasileira. At the familial level, there is an apparent trend in decreasing number of phloem and xylem poles in the stele of primary root, correlated with degree of specialization and advanced phylogenetic position: tetrarch to septarch–octarch in basal lineages, tetrarch Cereus-type in columnar species, to the diarch vascular system in Rhipsalideae and some species with cylindric/globose stem. phyllanthus are comparable to basal cacti, but the root anatomy is more similar to columnar relatives. Characters such as the presence of mucilage on the seed coat, the lack of seed operculum, and large cotyledons in E. Ontogenetic implications in the Cactaceae. phyllanthus seedlings have potential phylogenetic and The morphological and developmental patterns in E. Our results include descriptions of seed morphology,Įmbryonic features, and seedling vascularization pattern in the root, hypocotyl, cotyledons, and epicotyl. Significance in relation to seedling establishment. Phases in the life cycle of this species to identify organ development and understand their adaptive Phyllanthus seedlings based on morphological and anatomical analysis and 2) to examine the initial growth The goals were 1) to offer a comprehensive description of growth series in E. Here, we have taken a traditional anatomicalĪpproach to examine the stages of seedling development in Epiphyllum phyllanthus, a holo-epiphytic cactus Morphological studies of seedlings lack analysis of organ anatomy, impeding the comprehension of series of development and establishment in a particular environment. Plant life cycles, germination succession and requirements, and developmental progression. Seedling morphology is relevant in classification, taxonomy, and vegetation studies to understand
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