Estudo comparativo da madeira de Mimosa ophthalmocentra Mart. ex Benth e Mimosa tenuiflora (Willd.) Poir. (Fabaceae-Mimosoideae) na caatinga nordestina

Silva, Lazaro Benedito da; Santos, Francisco de Assis Ribeiro dos; Gasson, Peter; Cutler, D. F.

doi:10.1590/s0102-33062011000200006

Cited by 23 publications

(14 citation statements)

References 37 publications

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“…The growth rings were distinct and delimited by axial parenchyma, as described previously by Silva et al (2011) for Mimosa tenuiflora trees. The rings reflect the well-defined annual period of growth characteristic of the seasonal climate in semi-arid regions.…”

Section: Discussionmentioning

confidence: 82%

CLIMATE-TREE GROWTH RELATIONSHIPS OF Mimosa tenuiflora IN SEASONALLY DRY TROPICAL FOREST, BRAZIL

Mattos

Braz

Domene

et al. 2015

CERNE

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Mimosa tenuiflora is a native pioneer tree from the Caatinga used commercially as firewood due to its high calorific value. It is deciduous, its trunk does not reach large diameters and it has good regrowth capacity. This study intended to determine the annual increment in diameter of M. tenuiflora and its correlation with rainfall, as basis for fuel wood management. Disks from the stem base of M. tenuiflora trees were collected in 2008 in Sertânia and Serra Talhada, Pernambuco State, from regrowth of trees coppiced in 2003 and in Limoeiro do Norte, Ceará State, from a plantation established in 2002. The trees have well-defined annual growth rings, highly correlated with annual precipitation and are well-suited for dendrochronological investigations. Forest managers must consider the influence of previous drier years in the wood production when predicting fuel wood harvesting. The high growth correlation with the previous year's rainfall in regions where the rains start after photoperiodic stimulation indicate the necessity of understanding the growth dynamics of the species under dry forest conditions through additional ecophysiology studies. RELAÇÃO CLIMA-CRESCIMENTO DE ÁRVORES DE Mimosa tenuiflora EM FLORESTA TROPICAL SECA SAZONAL, BRAZILRESuMO: Mimosa tenuiflora é uma árvore pioneira e nativa da Caatinga usada, comercialmente, para lenha, em razão do seu elevado poder calorífico. É decídua, com perda de folhas no final da estação chuvosa, seu tronco não atinge grandes diâmetros e tem boa capacidade de rebrota. Este estudo tem por objetivo determinar o incremento anual em diâmetro de M. tenuiflora e sua correlação com a precipitação, visando a subsidiar o manejo florestal de madeira para energia. Discos da base do tronco de árvores de M. tenuiflora foram coletados em 2008, em

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Section: Discussionmentioning

confidence: 82%

CLIMATE-TREE GROWTH RELATIONSHIPS OF Mimosa tenuiflora IN SEASONALLY DRY TROPICAL FOREST, BRAZIL

Mattos

Braz

Domene

et al. 2015

CERNE

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“…Sin embargo, esta vulnerabilidad es reducida cuando las placas de perforación simple están acompañadas por punteaduras intervasculares alternas y, más aún, cuando éstas son ornamentadas, ya que proporcionan tensión superficial mayor y disminuyen la propagación del émbolo (Jansen et al, 2003;2004). Por un lado, las punteaduras intervasculares permiten el flujo de agua a los vasos adyacentes (Zweypfenning, 1978) y, por otro, la ornamentación retiene las burbujas de aire provocadas por una pérdida en la presión del agua (Carlquist, 1982;Choat et al, 2004) y, de esta forma, evitan la cavitación (Silva et al, 2011). En este estudio, únicamen-te M. luisana presentó punteaduras intervasculares ornamentadas.…”

Section: Longitud De Elementos De Vaso Placas De Perforación Y Punteunclassified

“…En los últimos años, los estudios ecoanatómicos de la madera han adquirido relevancia, debido a que aportan información sobre el comportamiento de los taxa, y probablemente permitan predecir sus respuestas ante cambios ambientales (cambio climático). Este tipo de estudios han sido realizados, principalmente, en especies arbóreas, muchas de ellas pertenecientes a la familia Leguminosae (de Lima et al, 2009;Silva et al, 2011).…”

Section: Introductionunclassified

Ecoanatomía de la madera de dos taxa mexicanos del género Mimosa (Leguminosae-Mimosoideae)

et al. 2017

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Antecedentes y Objetivos: Los estudios ecoanatómicos permiten estimar la respuesta de los taxa a distintos factores ambientales. Considerando la relevancia biológica y ecológica del género Mimosa, se estimaron las posibles respuestas adaptativas de dos taxa endémicos de México, M. aculeaticarpa var. aculeaticarpa y M. luisana, a través de un análisis ecoanatómico de su madera, para evaluar su resistencia y tolerancia a cambios en la precipitación.Métodos: Se recolectaron tres árboles de talla y cobertura similar por taxon. Se cortaron cubos de madera de 1 × 1 cm, ablandados a reflujo. Se hicieron secciones transversales, tangenciales y radiales, con grosor de 20 µm. Se tiñeron con safranina-verde rápido y se montaron en resina sintética. La descripción y el análisis de los caracteres anatómicos de la madera se basaron en la nomenclatura propuesta por la IAWA.Resultados clave: Mimosa aculeaticarpa var. aculeaticarpa presenta porosidad anular, mientras que M. luisana tiene porosidad difusa. Mimosa aculeaticarpa var. aculeaticarpa muestra vasos con diámetro tangencial mediano en madera temprana y pequeño en madera tardía y M. luisana presenta vasos con diámetro tangencial pequeño. Ambos tienen placa de perforación simple, punteaduras intervasculares areoladas, alternas y pequeñas, y ornamentadas en M. luisana. Mimosa aculeaticarpa var. aculeaticarpa posee principalmente parénquima axial paratraqueal vasicéntrico, mientras que en M. luisana es vasicéntrico y unilateral. En M. aculeaticarpa var. aculeaticarpa, los radios son uniseriados y en M. luisana biseriados. Las fibras son de longitud corta, diámetro fino y pared gruesa. Los índices de vulnerabilidad (IV) y de mesomorfía (IM) más altos se encontraron en M. aculeaticarpa var. aculeaticarpa (4.05 y 729.05, respectivamente), lo que indica que este taxon es más vulnerable a la sequía, mientras que los valores más bajos de IV y de IM correspondieron a M. luisana (1.42 y 226.71, respectivamente), sugiriendo que éste es más resistente a la sequía.Conclusiones: Se propone que M. aculeaticarpa var. aculeaticarpa es apta para restaurar lugares mésicos y M. luisana lo es para ambientes secos.

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“…ex Benth. stands out; it belongs to the Family Fabaceae and Subfamily Mimosoideae, and it is endemic to this region, found in the list of medicinal species that are under study (Giulietti et al, 2002), also standing out for its timber and energy potential (Silva et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal treatments for overcoming dormancy in seeds of Mimosa ophthalmocentra Mart. ex Benth. (Fabaceae: Mimosoideae)

Gomes¹,

Lacerda²,

Bruno³

et al. 2017

Braz. J. Biol. Sci.

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Abstract. The efficiency in the production of seedlings is decisive for the final result of their applicability. Therefore, strategies to ensure a rapid and uniform emergence are necessary, especially when it is associated with sustainable methods. The aim of this study was to evaluate the influence of different water temperatures as overcoming seed dormancy in Mimosa ophthalmocentra Mart. ex Benth., simply and economically, in the Brazilian Semiarid Region. The experimental design was completely randomized with four replications, each one consisting of 50 seeds, which were subjected to six treatments: intact seeds (T1/control) and seeds immersed in water at 55, 65, 75, 85, and 95 °C (T2, T3, T4, T5, and T6, respectively). Sowing was performed in trays under environmental conditions and evaluations were performed daily for 28 days. The emergence percentage, emergence speed index (ESI), and length and dry mass of seedlings were evaluated. Data were subjected to analysis of variance, and the means were compared by Tukey test (p < 0.05). M. ophthalmocentra has tegumentary dormancy, and its emergence was influenced by water temperature. Immersion of seeds in water at 75 ºC for 1 min provided the best result with 60% of emergence, ESI of 2.68, and seedlings with longer lengths and higher dry mass.

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Estudo comparativo da madeira de Mimosa ophthalmocentra Mart. ex Benth e Mimosa tenuiflora (Willd.) Poir. (Fabaceae-Mimosoideae) na caatinga nordestina

Cited by 23 publications

References 37 publications

CLIMATE-TREE GROWTH RELATIONSHIPS OF Mimosa tenuiflora IN SEASONALLY DRY TROPICAL FOREST, BRAZIL

CLIMATE-TREE GROWTH RELATIONSHIPS OF Mimosa tenuiflora IN SEASONALLY DRY TROPICAL FOREST, BRAZIL

Ecoanatomía de la madera de dos taxa mexicanos del género Mimosa (Leguminosae-Mimosoideae)

Hydrothermal treatments for overcoming dormancy in seeds of Mimosa ophthalmocentra Mart. ex Benth. (Fabaceae: Mimosoideae)

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