anatomia do lenho e dendrocronologia de lianas da famÃlia ...

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48 RESULTS GENUS SENEGALIA – MIMOSOIDEAE Senegalia grandistipula (Benth.) Seigler & Ebinger shows cambial variant lobed stem given to stem the appearance of square and growth rings boundaries of sporadic occurrence (Figure 1A, 2A). The distinctness in microscopic view is possible by fibrous zone and semi-ringporous, in some portions of stem. With less incidence radially flattened latewood cells and by pith flecks and traumatic canals. The macroscopic and microscopic observations provide distinction of growth rings boundaries, but macroscopic view facilities the detection of semiring porosity. Senegalia lacerans (Benth.) Seigler & Ebinger shows cambial variant xylem furrowed and growth rings boundaries of sporadic occurrence, allowing the observation in some portions of the samples (Figure 1C, 2B). The distinctness in microscopic view is possible by semi-ringporous; fibrous zone; marginal parenchyma. With less frequency, radially flattened latewood cells, pith flecks and traumatic canals. The macroscopic and microscopic observations provide distinction of growth rings boundaries. Senegalia martiusiana (Steud.) Seigler & Ebinger shows cambial variant lobed stem, with cylindrical lobes and growth rings boundaries of sporadic occurrence, allowing the observation in some portions of samples (Figure 1D, 2C). The features that allow the distinction in microscopic view are semi-ring-porous; fibrous zone; pith flecks and traumatic canals. The macroscopic and microscopic observations provide distinction of growth rings boundaries. Senegalia pedicellata (Benth.) Seigler & Ebinger shows cambial variant lobed stem with flattened lobes and growth rings boundaries of sporadic occurrence (Figure 1B, 2D). The distinction in microscopic view is possible, in some portions of stem, mainly by pith flecks and traumatic canals. But occasionally it is also possible by semi-ring-porous and fibrous zone. The macroscopic and microscopic observations provide distinction of growth rings boundaries.
49 Senegalia tenuifolia (L.) Britton & Rose (Figure 3D, 4A) in microscopic observation shows distinct growth rings by semi-ring-porous; fibrous zone in latewood, radially flattened latewood cells; and marginal parenchyma. Fibrous zone and radially flattened latewood cells are not ever well-distinct on all samples and on all growth rings, but the absence of both features in the same growth ring is rare. Abundance of calcium oxalate prismatic crystals was observed in transition of growth rings. The macroscopic and microscopic observations provide easy distinction of growth rings boundaries. GENUS PIPTADENIA – MIMOSOIDEAE Piptadenia adiantoides (Spreng.) J.F. Macbr. (Figure 3B, 4B) in microscopic observation shows distinct growth rings boundaries marked by combination of: semi-ring-porous; fibrous zone; radially flattened latewood cells; marginal parenchyma. Abundance of calcium oxalate prismatic crystals in transition of growth rings was observed. Two specimens do not have well-distinct semi-ring porosity, showing a thin layer of vessel with few diameters in latewood. In the same two specimens not all growth ring boundaries have well distinct fibre zone, because the pattern of decrease of confluence parenchyma bands toward the latewood making fibre zones are not followed. The macroscopic observation provides easy distinction of growth rings boundaries than microscopic observation, because the presence of axial parenchyma lignified with thicker walls. Piptadenia micracantha Benth. (Figure 3C, 4C) in microscopic observation shows distinct growth rings boundaries marked by combination of: semi-ring-porous; fibrous zone; marginal parenchyma. Few growth rings show radially flattened cells on latewood. Abundance of calcium oxalate prismatic crystals in transition of growth rings was observed (Figure 5). The macroscopic and microscopic observations provide easy distinction of growth rings boundaries. Piptadenia micracantha display to be the species with the anatomical features more constants delimiting growth rings. GENUS DALBERGIA – PAPILIONOIDEAE Dalbergia frutescens (Vell.) Britton var. frutescens (Figure 3A, 4D) in microscopic observation has distinct growth rings boundaries marked by semi-ring porosity; marginal parenchyma; fibrous zone in latewood; and radially flattened latewood cells. The features
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Instituto de Pesquisas Jardim Botâ
Page 3 and 4:
III ANATOMIA DO LENHO E DENDROCRONO
Page 5 and 6:
V A meus pais Arno (in memorium) e
Page 7 and 8: VII Aos grandes amigos parceiros de
Page 9 and 10: IX ABSTRACT The lianas represent a
Page 11 and 12: INTRODUÇÃO GERAL Nas florestas do
Page 13 and 14: 3 Apesar das vantagens dos vasos gr
Page 15 and 16: 5 REVISÃO BIBLIOGRÁFICA Lianas Hi
Page 17 and 18: 7 A notável largura dos elementos
Page 19 and 20: 9 Dendrocronologia Pesquisas sobre
Page 21 and 22: 11 ARTIGO 1 Anatomia do lenho de oi
Page 23 and 24: 13 ABSTRACT (Wood anatomy of eight
Page 25 and 26: 15 MATERIAL E MÉTODOS As coletas f
Page 27 and 28: 17 RESULTADOS Senegalia grandistipu
Page 29 and 30: 19 Senegalia martiusiana (Steud.) S
Page 31 and 32: 21 Senegalia tenuifolia (L.) Britto
Page 33 and 34: 23 Piptadenia micracantha Benth. (F
Page 35 and 36: 25 Todas as espécies estudadas apr
Page 37 and 38: 27 agrupadas (Fig. 15). Piptadenia
Page 39 and 40: 29 Na maioria das espécies em estu
Page 41 and 42: 31 histoquímicos e foi confirmada
Page 43 and 44: 33 AGRADECIMENTOS Agradecemos ao In
Page 45 and 46: 35 Putz, F.E. & Mooney, H.A. 1991.
Page 47 and 48: 37 Figuras 1 a 4 - Visão microscó
Page 49 and 50: 39 Figuras 9 a 12 - Visão do plano
Page 51 and 52: 41 Figura 15 - Análise de agrupame
Page 53 and 54: 43 ABSTRACT The anatomical features
Page 55 and 56: 45 1991). Two liana censuses develo
Page 57: 47 Pro Plus version 3.0 for Windows
Page 61 and 62: 51 DISCUSSION Distinct growth rings
Page 63 and 64: 53 In the last decades the knowledg
Page 65 and 66: 55 ACKNOWLEDGEMENTS We thank the In
Page 67 and 68: 57 Détienne P. 1989. Appearance an
Page 69 and 70: 59 Richter HG, Dallwitz MJ. 2000 on
Page 72: 62 Figure 1: Transverse sections in
Page 75: 65 Figure 3: Transverse sections in
Page 78 and 79: 68 ARTIGO 3 Crescimento secundário
Page 80 and 81: 70 INTRODUÇÃO Desde o final do s
Page 82 and 83: 72 MATERIAIS E MÉTODOS O estudo fo
Page 84 and 85: 74 RESULTADOS As quatro espécies e
Page 86 and 87: 76 DISCUSSÃO Foi observado neste e
Page 88 and 89: 78 No presente trabalho, quando ana
Page 90 and 91: 80 Lorimer, C.G., Dahir, S.E. & Sin
Page 92 and 93: 82 Figuras 2 a 5 - Lesões realizad
Page 94 and 95: 84 2,00 2000,00 Índice 1,00 0,00 -
Page 96 and 97: 86 60 50 A milímetros 40 30 20 10
Page 98 and 99: 88 A dendrocronologia, por sua vez,
Page 100 and 101: 90 Carlquist, S. 1988. Comparative
Page 102 and 103: 92 Gentry, A.H. 1985. An ecotaxonom
Page 104: 94 Trouet, V., Haneca, K., Coppin,
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