Palinologia de espécies de Mimosa L. (Leguminosae - Mimosoideae) do Semi-Árido brasileiro

Abstract

RESUMO -(Palinologia de espécies de Palavras-chave: morfologia polínica, Mimosa, díades, LeguminosaeABSTRACT -(Pollen morphology of Mimosa L. species (Leguminosae -Mimosoideae) from the semi-arid region of Brazil). 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.

Pollen analysis of honeys from Caatinga vegetation of the state of Bahia, Brazil

“…alternative M. caesalpiniifolia Benth. that are indistinguishable by their pollen grains (Lima et al, 2008). Pollen types belonging to this group were found by Barth (1970a), who reported the occurrence of M. caesalpiniifolia as the predominant pollen in a honey sample in the municipality of Castro Alves (Bahia), and by Santos and Santos (2003), who found M. arenosa as the predominant and secondary pollen for honey from the microregion of Paraguassu (Bahia).…”

“…According to Lima et al (2008), M. ursina has pollen grains in dyads and monads, an unusual feature for the Mimosa genus, which may have prevented its identification in previous works. Another pollen, which has also not been recorded in other pollen spectrum of honey from the Caatinga, is M. quadrivalvis despite being mentioned as a species of beekeeping interest in the semiarid climate , having contributed in the honey of Nova Soure as important minor pollen and minor pollen (Table II).…”

“…Relevant pollen catalogues were used for auxiliary identification, published by Chávez et al (1991), Roubik and Moreno (1991), Carreira and Barth (2003), and Melhem et al (2003); Lima et al (2008) was used for Mimosa spp. from the Brazilian semiarid lands, and Souza (2008) was used for Mitracarpus spp.…”

Diversidade polínica das Mimosoideae (Leguminosae) ocorrentes em uma área de caatinga, Pernambuco, Brasil

“…Glanduliferae Benth.. O gênero Mimosa é reconhecidamente heterogêneo palinologicamente (Caccavari 1985;1986;Lima et al 2008), podendo os caracteres polínicos ser de utilidade na separação de suas seções e séries. Da mesma forma, Piptadenia também é considerado euripolínico e com grupos facilmente distintos a partir da morfologia polínica (Caccavari 1987;2002).…”

Botanical profile of bee pollen from the southern coastal region of Bahia, Brazil

“…Subsequently qualitative and quantitative analyses of the pollen grains were carried out. For the qualitative analysis, exploratory observations were made to identify the main pollen types present, which were botanically classifi ed by the palynological literature available (Roubik & Moreno 1991;Lima et al 2008). Also comparisons were made of some pollen types encountered in the samples with a pollen reference library for different areas in Bahia state.…”