%0 Journal Article
%T Nectarios Extraflorales en Piriqueta y Turnera (Turneraceae) Extrafloral nectaries in Piriqueta and Turnera (Turneraceae)
%A Ana Maria Gonzalez
%A Mar赤a Natalia Ocantos
%J Bolet赤n de la Sociedad Argentina de Bot芍nica
%D 2006
%I Sociedad Argentina de Bot芍nica
%X Se estudiaron los caracteres anat車micos y morfol車gicos de los nectarios extraflorales en 4 especies de Piriqueta , as赤 como en 16 inclu赤das en 6 de las 7 series de Turnera (Turneraceae) que presentan estas gl芍ndulas. Se los clasific車 de acuerdo a su forma y grado de desarrollo y se describi車 un nuevo tipo de "poro": foveolado. Basada en caracteres morfo-anat車micos se propuso una probable secuencia morfol車gica que ubicar赤a en una posici車n inferior menos especializados a las especies con nectarios extraflorales (NEF) planos y sin "poros"; luego se encuentran las especies con nectarios planos y "poros" foveolados; en posici車n intermedia se encontrar赤an los NEF elevados, tanto globosos o hemisf谷ricos como cupuliformes; por 迆ltimo, est芍n los NEF cupuliformes con "poro" crateriforme o mesetiforme. Varias especies de diversas series presentaron caracteres variables, ubic芍ndose en posici車n dispar en la secuencia morfol車gica propuesta; tambi谷n se observaron especies con caracteres heterogen谷os, siendo dif赤cil establecer su ubicaci車n en la secuencia. The anatomical and morphological characters of the extrafloral nectaries were studied in 4 species of Piriqueta , and in 16 which belong to six of the seven series of Turnera (Turneraceae) that present these glands. They were classified according to its form and degree of development and a new type of "pore" was described: foveolate. Based on morpho-anatomical characters, a probable morphological sequence was proposed. This would locate the species with flattened EFN and without "pores" in a lower position; after that, the species with flattened nectaries and foveolate "pores" are found; in an intermediate position the elevated extrafloral nectaries (EFN) - sphericals or hemisphericals as well as cupuliforms -were found; finally, the cupuliform EFN with crateriform or mesetiform "pore" are found. Several species of diverse series presented variable characters, being located in an unlike position in the proposed morphological sequence; species with heterogeneous characters were also observed, being difficult to establish their location in the sequence.
%K Turneraceae
%K Nectarios extraflorales
%K Poros
%K Anatom赤a
%K Col谷teres
%K Turneraceae
%K Extrafloral nectaries
%K Pores
%K Anatomy
%K Colleters
%U http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722006000200008