palinologia de espécies de mimosa l. (leguminosae - mimosoideae) do semi-Árido brasileiro pollen morphology of mimosa l. species (leguminosae - mimosoideae) from the semi-arid region of brazil

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ID: 205868
2008
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Abstract
O estudo palinológico de Mimosa L. teve por finalidade caracterizar as espécies do gênero ocorrentes na vegetação de caatinga do Nordeste brasileiro. Foram examinadas 39 espécies que tiveram seus grãos de pólen acetolisados, medidos, descritos e ilustrados sob microscopia óptica e eletrônica de varredura. Os resultados permitiram reconhecer seis tipos polínicos e dois subtipos com base na unidade de dispersão. Foi registrada a ocorrência de díades (M. adenophylla Taub., M. ursina Mart.) e mônades (M. ursina Mart.). A morfologia polínica das espécies (Mimosa lepidophora Rizzini e Mimosa pithecolobioides Benth.) Mimosa-Mimadenia mostrou similaridade com grupo Piptadenia enquanto a diversidade polínica observada em Mimosa-Batocaulon indicou o polimorfismo do grupo.
Pollen studies of Mimosa L. sought to characterize the species of this genus occurring within the caatinga vegetation of northeastern Brazil. A total of 39 species were examined. The pollen grains were acetolyzed, measured, described, and illustrated using optical light microscopy and scanning electron microscopy. The results indicated the existence of six basic pollen types and two sub-types, based on dispersal units. The occurrence of dyads (Mimosa adenophylla Taub., Mimosa ursina Mart.) and monads (Mimosa ursina Mart.) was recorded.
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Authors ;Luciene Cristina Lima e Lima;Francisco Hilder Magalhães e Silva;Francisco de Assis Ribeiro dos Santos
Journal monatshefte für chemie chemical monthly
Year 2008
DOI
10.1590/S0102-33062008000300016
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062008000300016
Keywords
leguminosae dyads leguminosaebotany díades

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