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Madera y bosques

versão On-line ISSN 2448-7597versão impressa ISSN 1405-0471


BOLZON DE MUNIZ, Graciela Ines; NISGOSKI, Silvana  e  LOMELI-RAMIREZ, María Guadalupe. Wood anatomy and ultrastructure of three species of Prosopis (Leguminosae-Mimosoideae) from dry Parque Chaqueño, Argentina. Madera bosques [online]. 2010, vol.16, n.4, pp.21-38. ISSN 2448-7597.

This study was aimed to contribute to the knowledge of anatomy and ultra structure of the 3 species of wood of Prosopis growing in heterogeneous forest dry Chaqueño Park. The study material was collected in the province of Santiago del Estero northwest Argentina. The species studied were: Prosopis vinalillo, Prosopis alba and Prosopis nigra. The wood of the species was described macroscopically using a magnifying glass. For microscopic study were prepared permanent slides from the three planes of wood and dissociated material to measure the cellular elements. The results show that the 3 species are very similar and consistent with the structural features of the subfamily Mimosoideae. However, the number of vessels/mm2 was quite variable between species and between individuals of the same species. In the cases of inter-vessel, vessel-ray and vessel-parenchyma pits is important to describe its shape, type, distribution and ornamentation. Samples observed under scanning electron microscope allowed displaying ornaments in pits and striations on the vessels walls. These striations were shown to be characteristics of the 3 Prosopis species studied.

Palavras-chave : Anatomy; Prosopis; Park Chaqueño; Mimosoideae.

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