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Journal articles on the topic 'Eucalyptus pilularis'

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Published: 4 June 2021

Last updated: 20 February 2023

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Eleotério, Jackson Roberto, Douglas Reichert, Kerling Fabiane Hornburg, and Isalena Meneguelli. "MASSA ESPECÍFICA E RETRATIBILIDADE DA MADEIRA DE SEIS ESPÉCIES DE EUCALIPTO CULTIVADAS NO LITORAL DE SANTA CATARINA." FLORESTA 45, no. 2 (2014): 329. http://dx.doi.org/10.5380/rf.v45i2.34699.

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O objetivo deste trabalho é determinar e comparar a massa específica básica e aparente a 12% de umidade e os coeficientes de contração radial, tangencial e volumétrico de cinco espécies e um híbrido de eucalipto. As amostras de Corymbia torelliana, Eucalyptus cloeziana, Eucalyptus pilularis e Eucalyptus resinifera foram retiradas de árvores com 17 anos; as de Eucalyptus grandis, de árvores com 14 anos; e as de Eucalyptus grandis x Eucalyptus urophylla, de árvores com oito anos, todas plantadas no litoral norte de Santa Catarina. A madeira do híbrido Eucalyptus grandis x Eucalyptus urophylla e a de Eucalyptus grandis e de Eucalyptus pilularis classificam-se como leve, e a das demais espécies é classificada como madeira moderadamente pesada. Independentemente da contração analisada, os grupos formados na comparação de médias foram os mesmos. Os coeficientes de contração radial de Eucalyptus cloeziana e Eucalyptus resinifera são altos; já os coeficientes de contração tangencial e volumétrico de Eucalyptus grandis e volumétrico de Eucalyptus pilularis são baixos; e os demais podem ser classificados como médios. A variação na massa específica não é acompanhada de proporcional variação nos coeficientes de contração, resultando em baixas e moderadas correlações entre essas variáveis, apesar de significativas.Palavras-chave: Propriedades físicas; contração; Eucalyptus; Corymbia. AbstractSpecific gravity and shrinkage coefficients of wood of six species of eucalypts cultivated on the coast of Santa Catarina. This work aims at determining and comparing the basic and 12% moisture content specific gravity and radial, tangential and volumetric shrinkage coefficients of five species and a hybrid of eucalypts. The samples of Corymbia torelliana, Eucalyptus cloeziana, Eucalyptus pilularis, Eucalyptus resinifera were extracted from 17 years old trees; ones of Eucalyptus grandis from 14 years old trees and the ones of Eucalyptus grandis x Eucalyptus urophylla from eight years old trees, all of them planted on the North Coast of Santa Catarina State. The wood of the hybrid Eucalyptus grandis x Eucalyptus urophylla, of the Eucalyptus grandis and of the Eucalyptus pilularis can be classified as light, the others can be classified as moderately heavy. Independently on the shrinkage analyzed, the groups formed during the multiple mean comparing are the same. The radial shrinkage coefficient of Eucalyptus cloeziana and that of Eucalyptus resinifera are high. However, the tangential and volumetric shrinkage coefficients of Eucalyptus grandis and the volumetric shrinkage coefficient of Eucalyptus pilularis are low; the others can be classified as medium. The variation on specific gravity is not followed by proportional variation on the shrinkage coefficients, resulting in low and moderate correlations between coefficients even tough significant.Keywords: Physical properties; shrinkage coefficients; Eucalyptus; Corymbia.

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Shepherd, M., C. Bihua, and R. Henry. "Microsatellite markers for Eucalyptus pilularis (Subgenus Eucalyptus); sourcing genetic markers outside the subgenus." Silvae Genetica 62, no. 1-6 (2013): 246–55. http://dx.doi.org/10.1515/sg-2013-0030.

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AbstractMicrosatellite markers remain the most broadly used molecular marker in eucalypt genetics. A major advantage of microsatellite markers is that they often transfer readily between related taxa circumventing the need to develop new markers de novo in each species. Markers have been developed for a number of species of major economic importance, mainly from the Subgenus Symphyomyrtus, but these may also be available for use in species of lesser economic importance from other subgenera. Here we report on the sourcing of microsatellite markers for E. pilularis (Subgenus Eucalyptus (Formerly Monocalyptus)) from species outside the subgenus. Ninety-seven precent (60 out of 62) of loci that amplified in the source taxon (E. grandis) also amplified in the target taxon E. pilularis. By characterising them on a diversity panel (n=24) and a pedigree, a subset of 41 loci were distilled out that could be scored reliably and were polymorphic (Mean unbiased heterozygosity= 0.81). Predictions of efficient microsatellite marker transfer among eucalypts based on low evolutionary divergence have largely been borne out and are congruent with accumulating evidence of low sequence divergence within Eucalyptus. Upon this favourable background for microsatellite marker transfer, this study indicates highly efficient transfer is possible by identifying loci with broad PCR optima and adoption of approaches that favour cross-species transfer.

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DELL, B., N. MALAJCZUK, and G. T. THOMSON. "Ectomyeorrhiza formation in Eucalyptus. V. A tuberculate ectomycorrhiza of Eucalyptus pilularis." New Phytologist 114, no. 4 (1990): 633–40. http://dx.doi.org/10.1111/j.1469-8137.1990.tb00434.x.

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Braga, Rafael Malfitano, Fabrizio Furtado de Sousa, Nelson Venturin, and Francisco de Assis Braga. "BIOMASSA E ATIVIDADE MICROBIANA SOB DIFERENTES COBERTURAS FLORESTAIS." CERNE 22, no. 2 (2016): 137–44. http://dx.doi.org/10.1590/01047760201622022083.

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RESUMO Neste estudo avaliou-se a fertilidade do solo, a biomassa e atividade microbiológica do solo sob coberturas florestais de Eucalyptus grandis, Eucalyptus pilularis, Eucalyptus cloeziana e Corymbia maculata; Pinus caribaea var. hondurensis, com 40 anos de idade, e um fragmento de Floresta Estacional Semidecidual, localizados no campus da Universidade Federal de Lavras. Em amostras de solo coletadas na camada de 0-5 cm foram determinados parâmetros de fertilidade, a respiração basal e o carbono de biomassa microbiana. Os resultados mostraram que as espécies E. grandis e E. cloeziana mantiveram teores de carbono de biomassa microbiana mais elevados dentre os ecossistemas avaliados e iguais àqueles observados sob a floresta nativa. Em contraste, o solo sob pinus apresentou os menores índices microbiológicos. Sob C. maculata e E. pilularis os teores foram intermediários para este parâmetro. A respiração basal de todos os ecossistemas foi igual. O nível de fertilidade foi extremanente baixo sob todos os tipos de cobertura vegetal avaliados.

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TURNER, JOHN, and MARCIA J. LAMBERT. "Litterfall and forest floor dynamics in Eucalyptus pilularis forests." Austral Ecology 27, no. 2 (2002): 192–99. http://dx.doi.org/10.1046/j.1442-9993.2002.01170.x.

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Grenville, DJ, Rl Peterson, and AE Ashford. "Synthesis in Growth Pouches of Mycorrhizae Between Eucalyptus pilularis and Several Strains of Pisolithus tinctorius." Australian Journal of Botany 34, no. 1 (1986): 95. http://dx.doi.org/10.1071/bt9860095.

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Eucalypt mycorrhizae were synthesized in non-sterile plastic growth pouches. Mycorrhizae occurred on second-order roots 6-9 days after inoculation of seedlings. External morphology and internal anatomy of mycorrhizae are similar to those produced in soil. The growth pouch is particularly useful for observing the development of mycorrhizae and sampling tissues of known ectomycorrhizae without disturbing the root system. For these reasons, as well as the rapidity of ectomycorrhizal synthesis, this method represents an important advance in technology. Five strains of Pisolithus tinctorius were tested in growth pouches and found to form ectomycorrhizae with Eucalyptus pilularis.

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Martins Avelar, Maria Lopes, Bruno Alves Moscardini, Denys Matheus Santana Costa Souza, et al. "ONTOGENETIC AGE AND INOCULATION METHODS FOR THE IN VITRO ESTABLISHMENT OF Eucalyptus pilularis Smith." Nativa 10, no. 1 (2022): 40–46. http://dx.doi.org/10.31413/nativa.v10i1.12996.

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We aimed to evaluate the in vitro establishment of nodal segments of Eucalyptus pilularis Smith considering two origins of tissues (Or1 - epicormic shoots collected from pruned branches of selected adult trees; Or2 - shoots collected from seminal mini-stumps) and four inoculation methods (Me1 - culture medium supplemented with 0.5 g L-1 activated charcoal; Me2 - culture medium supplemented with 800 mg L-1 PVP30; Me3 - exposure to light for 30 days; Me4 - exposure to dark for 7 days). At 30 days after the in vitro inoculation of tissues, there was no establishment of tissues from epicormic shoots (Or1). Or2 resulted in lower percentages of tissue oxidation and contamination by microorganisms, in addition to having presented establishment and formation of shoots. Me1 resulted in a lower mean tissue oxidation, although it differed statistically only from Me4. An origin of the tissues of ontogenetic age was a determining factor for the successful in vitro establishment of E. pilularis. The use of the Or2 origin and the Me1, Me2, and Me3 methods are recommended to reduce phenolic oxidation of tissues in the in vitro establishment. Keywords: antioxidant agents; exposure to light; epicormic shoots; tissue oxidation. Idade ontogenética e métodos de inoculação para o estabelecimento in vitro de Eucalyptus pilularis Smith RESUMO: Objetivou-se avaliar o estabelecimento in vitro de segmentos nodais de Eucalyptus pilularis considerando duas origens de tecidos (Or1 - brotos epicórmicos coletados em galhos podados de matrizes adultas e Or2 - brotos coletados de minicepas seminais) e quatro métodos de inoculação (Me1 - meio de cultura suplementado com 0,5 g L-1 de carvão ativado, Me2 - meio de cultura suplementado com 800 mg L-1 de PVP30, Me3 - exposição à luminosidade por trinta dias e Me4 - exposição em ambiente com ausência de luminosidade por sete dias). Aos 30 dias após a inoculação in vitro dos tecidos, constatou-se que não houve estabelecimento de tecidos oriundos da Or1. A utilização de segmentos nodais provenientes da Or2 resultou em menores percentuais de oxidação e de contaminação por microrganismos, além de ter apresentado estabelecimento e emissão de brotos. O uso do Me1 resultou em menor média de oxidação, embora tenha diferido estatisticamente somente do Me4. A origem dos tecidos associada à idade ontogenética foi um fator determinante para o sucesso do estabelecimento in vitro de E. pilularis. Recomenda-se a utilização da Or2 e dos métodos Me1, Me2 e Me3 a fim de reduzir a oxidação fenólica dos tecidos durante o estabelecimento in vitro. Palavras-chave: agentes antioxidantes; exposição à luminosidade; brotos epicórmicos; oxidação de tecidos.

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Forrester, David I., and R. Geoff B. Smith. "Faster growth of Eucalyptus grandis and Eucalyptus pilularis in mixed-species stands than monocultures." Forest Ecology and Management 286 (December 2012): 81–86. http://dx.doi.org/10.1016/j.foreco.2012.08.037.

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Alcorn, Philip J., Jürgen Bauhus, R. Geoff B. Smith, Dane Thomas, Ryde James, and Adrienne Nicotra. "Growth response following green crown pruning in plantation-grown Eucalyptus pilularis and Eucalyptus cloeziana." Canadian Journal of Forest Research 38, no. 4 (2008): 770–81. http://dx.doi.org/10.1139/x07-185.

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Pruning of live branches is performed to enhance wood quality in plantation trees. Stem, branch and wood properties may be altered following pruning from below, but the extent and duration of such effects are unknown for many plantation Eucalyptus species. The effect of 0%, 20%, 50%, and 70% green crown length removal on growth and wood quality was examined in 3.5-year-old plantation-grown Eucalyptus pilularis Sm. (blackbutt) and Eucalyptus cloeziana F. Muell. (Gympie messmate) trees on two subtropical sites in eastern Australia. Growth increment of the stem at breast height was not affected by 20% crown removal. However, stem increment at breast height was reduced for up to 8 months with 50% crown removal and up to 12 months with 70% crown removal. Pruning had no impact on height growth. However, the height of trees pruned to 70%, relative to the height of the surrounding unpruned trees, was temporarily reduced 12 months after pruning in both species. Stem form, stem taper, wood density, and residual branch growth above the pruned zone were unaffected by pruning. Owing to the fast vertical crown expansion, trees were able to rapidly compensate for leaf area removal without long-term reductions in stem growth. The implications for management operations utilizing pruning as a means of enhancing timber quality are discussed.

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Sexton, Timothy R., Robert J. Henry, Chris E. Harwood, et al. "Pectin Methylesterase Genes Influence Solid Wood Properties of Eucalyptus pilularis." Plant Physiology 158, no. 1 (2011): 531–41. http://dx.doi.org/10.1104/pp.111.181602.

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Turner, John, and Marcia J. Lambert. "Analysis of nutrient use efficiency (NUE) in Eucalyptus pilularis forests." Australian Journal of Botany 62, no. 7 (2014): 558. http://dx.doi.org/10.1071/bt14162.

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Alternative indices to use for nutrient use efficiency (NUE) were analysed for nitrogen, phosphorus, potassium, calcium, magnesium and sulfur, using 17 Eucalyptus pilularis forest sites to test the hypothesis that NUE increases with decreasing nutrient availability. Reported indices represent different measures of nutrient use, including (1) efficiency of acquisition from soil, (2) quantities required for organic matter production, (3) organic matter production related to uptake, (4) ability to internally retranslocate nutrients and (5) physiological requirement of nutrients. Some indices are highly correlated but the highest correlations were according to age. Phosphorus, the main growth-limiting nutrient, on average, produced 6.5 and 10.9 t of organic matter per kilogram of phosphorus required and taken up from soil, respectively. Comparable estimates were made for other nutrients. NUEs of mobile nutrients increased with decreases in nutrient availability and this supported the hypotheses when age was taken into account. The NUEs of one nutrient are not independent of other nutrients. The inverse of foliage nutrient concentration is a valuable low-cost index of nutrient utilisation and correlates with net primary production/nutrient requirement, and is related to age. Resorption of nutrients, comparing new and abscised tissue, was of low value, but abscised-tissue nutrient correlations are related to a lower benchmark and are of value. The use of selected NUE indices for species comparison was discussed.

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Shepherd, Mervyn, Timothy R. Sexton, Dane Thomas, Michael Henson, and Robert J. Henry. "Geographical and historical determinants of microsatellite variation in Eucalyptus pilularis." Canadian Journal of Forest Research 40, no. 6 (2010): 1051–63. http://dx.doi.org/10.1139/x10-049.

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Geographically distributed genetic variation is expected in species that have wide latitudinal and habitat ranges, like Eucalyptus pilularis Sm. Coastal and inland ecotypes of this tall forest tree have been distinguished in genecological studies, but patterns of regionally distributed quantitative variation are weak. At the coarsest level, variation of 12 microsatellite markers divided a rangewide sample of 424 E. pilularis trees into two zones: the region to the south of Sydney forming one zone and regions to the north forming another. Genetic structuring did not correspond with ecotypes but rather with a biogeographic division, suggesting an imprint of historical isolation. Typical and uniform levels of genetic diversity (He = 0.78 ± 0.02 (mean ± SE)) were found across 10 geographic regions. Genetic structuring by regions (PhiRT = 3%), by localities within regions (PhiPT = 2%), between coastal and inland provenances (PhiPT = 2%), or due to isolation by distance was subtle. These observations, along with the lack of evidence for bottlenecks, suggested genetic cohesion within zones due to gene flow and historically large population sizes. The low levels of diversity and poor growth performance of the Fraser Island ecotype were better explained by recent colonization and adaptation than by genetic isolation, since there was no evidence of inbreeding.

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Wilkes, J., and A. P. Wilkins. "Anatomy of Collapse in Eucalyptus Species." IAWA Journal 8, no. 3 (1987): 291–95. http://dx.doi.org/10.1163/22941932-90001058.

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Scanning electron microscopy was employed to examine the anatomy of collapse in Eucalyptus bancroftii, E. macrorhyncha, E. nitens, E. oreades, and E. pilularis. Collapse appeared to be restricted to fibres, although other cell types sometimes distorted in response to the stresses developed. The propensity for individual fibres to collapse was not always related to the ratio of wall thickness to lumen diameter, and a complex of factors, e.g. proximity to other cell types, may be involved. Collapse, which was most prevalent in the tangential direction, was rarely accompanied by detectable damage to the wall structure, suggesting that the strength of affected timber should not be seriously diminished.

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Mulligan, DR, and JW Patrick. "Phosphorus and Carbon Economies of Ectomycorrhizal Seedlings of Eucalyptus pilularis Smith." Functional Plant Biology 12, no. 6 (1985): 669. http://dx.doi.org/10.1071/pp9850669.

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The distribution patterns of phosphorus and carbon in Eucalyptus pilularis Smith seedlings raised in phosphorus-deficient conditions for at least 4 months have been examined. These seedlings possessed well developed ectomycorrhizas and there was significant retention of phosphorus by the mycorrhizal roots at low levels of phosphorus supply. A high proportion of residue phosphorus (possibly polyphosphate) was found in mycorrhizal roots and also in foliage at a level of deficiency at which very little storage phosphorus would be expected to remain. There was evidence of a control mechanism, perhaps operating via this 'storage' pool, which guarded against any overstimulation of growth rate in response to periodic increases in soil phosphorus. This control acted by regulating the amount of phosphorus available for photosynthesis, especially in those leaves with the highest potential to export carbon for growth. It is proposed that the E. pilularis seedlings combine strategies which characterize fast-growing and slow-growing species, namely a responsiveness of photosynthesis to available phosphorus in the foliage and foliar storage of phosphorus when supply persists. Such flexibility may contribute to this species being able to compete successfully in a range of habitats of varying nutritional status.

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Souza, Denys Matheus Santana Costa, Maria Lopes Martins Avelar, Eduardo Oliveira Silva, et al. "Influence of spectral quality on the rooting of Corymbia and Eucalyptus spp. minicuttings." Annals of Forest Research 65, no. 1 (2022): 141–54. http://dx.doi.org/10.15287/afr.2022.21074.

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The pursuit of better adaptation in clonal plants seedling production processes based on the minicutting technique has expanded the use of species and hybrid combinations of genera Corymbia and Eucalyptus in the composition of commercial crops. The aim of the work was to evaluate the effect of spectral quality on the rooting of Eucalyptus andrewsii, E. saligna, E. microcorys, E. cloeziana, E. pilularis, E. grandis, E. grandis × E. urophylla and Corymbia torelliana minicuttings to help better understanding the production of clonal plants. E. grandis × E. urophylla and C. torelliana root anatomy was analyzed. The effects of spectral quality on the rooting of minicuttings were evaluated based on three sources (fluorescent, red and blue). Survival (SUR), callogenesis (CAL), oxidation (OXI) and rooting (RO) percentage; length (RL) and diameter of the largest root (ROD); mean number of roots per minicutting (NRM), root epidermis thickness (RET), root cortex diameter (RCD), diameter of the root vascular cylinder (DRVC) and root diameter (RD) were evaluated at 30 days. Based on the results, wavelength specificity was a useful technology to optimize the large-scale production of clonal plants of Eucalyptus. Fluorescent spectral quality was the most appropriate source in the rooting of E. saligna (68.7%), E. microcorys (43.7%), E. pilularis (75.0%) and C. torelliana (75.0%) minicuttings; blue spectral quality was the most appropriate for E. andrewsii (55.5%), E. grandis (75.0%) and E. grandis × E. urophylla (81.3%); and red spectral quality was the most appropriate for E. cloeziana (56.2%).

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Massicotte, H. B., R. L. Peterson, C. A. Ackerley, and A. E. Ashford. "Ontogeny of Eucalyptus pilularis – Pisolithus tinctorius ectomycorrhizae. II. Transmission electron microscopy." Canadian Journal of Botany 65, no. 9 (1987): 1940–47. http://dx.doi.org/10.1139/b87-265.

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Eucalyptus pilularis – Pisolithus tinctorius ectomycorrhizae were synthesized in growth pouches, and ultrastructural features of the two symbionts were documented during ontogeny. In the root cap – meristem zone, fungal hyphae envelop the root cap and penetrate between root cap cells. These fungal hyphae have numerous organelles and nuclei, some of which are in mitosis. The inner mantle hyphae in this zone and in the pre-Hartig net zone are heterogeneous in cytoplasmic content and are separated from the epidermis by an electron-dense layer. In the young Hartig net zone, hyphae penetrate between epidermal cells which contain electron-dense vacuolar deposits. In this zone and in the older Hartig net zone, hyphae do not penetrate beyond the epidermis and therefore a paraepidermal Hartig net is formed. The outer cortical layer develops as a hypodermis with suberized cell walls. The root–fungus interface consists of Hartig net hyphae which form a labyrinthine wall system and epidermal cells which are enlarged radially and contain electron-dense vacuolar deposits.

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Bailey, S. R., and R. L. Peterson. "Ectomycorrhiza synthesis between isolated roots of Eucalyptus pilularis and Pisolithus tinctorius." Canadian Journal of Botany 66, no. 6 (1988): 1237–39. http://dx.doi.org/10.1139/b88-176.

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Callus cultures were established from epicotyl–hypocotyl explants of Eucalyptus pilularis seedlings. Roots formed on these cultures were excised and placed in divided petri plates. The apical portion of each root was placed on filter paper overlying modified Bonner–Deverian medium, while the basal portion was placed on Bonner–Deverian medium containing carbohydrates. Plugs of Pisolithus tinctorius mycelium were placed adjacent to the apical portion of each root. After 10–14 days, approximately 40% of all root tips formed a mantle and Hartig net typical of ectomycorrhizas.

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Alexiou, P. N. "Optimisation of an accelerated drying schedule for regrowth eucalyptus pilularis Sm." Holz als Roh- und Werkstoff 49, no. 4 (1991): 153–59. http://dx.doi.org/10.1007/bf02607896.

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Ashford, Anne E., Peter A. Vesk, David A. Orlovich, Anne-Laure Markovina, and William G. Allaway. "Dispersed Polyphosphate in Fungal Vacuoles in Eucalyptus pilularis/Pisolithus tinctorius Ectomycorrhizas." Fungal Genetics and Biology 28, no. 1 (1999): 21–33. http://dx.doi.org/10.1006/fgbi.1999.1140.

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Carnegie, Angus J., Ian G. Johnson, and Michael Henson. "Variation among provenances and families of blackbutt (Eucalyptus pilularis) in early growth and susceptibility to damage from leaf spot fungi." Canadian Journal of Forest Research 34, no. 11 (2004): 2314–26. http://dx.doi.org/10.1139/x04-114.

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Growth to 38 months and severity of Mycosphaerella leaf disease and target spot (caused by Aulographina eucalypti (Cooke & Mass.) von Arx & Muller) were assessed in a Eucalyptus pilularis Smith (blackbutt) family trial in New South Wales (NSW), Australia. Significant variation in growth, disease, and defoliation was found among the 40 provenances and 321 families tested; however, relatively few provenances had concentrations of superior or poor families. Most families in three higher altitude NSW provenances were superior for volume increment, while three southeast Queensland provenances had low mean volume increment. Mycosphaerella damage and defoliation tended to be low in several higher altitude northern NSW provenances, but the southeast Queensland provenances had significantly higher mean defoliation. Individual narrow sense heritability estimates were low to moderate for Mycosphaerella damage (0.38) and defoliation (0.22) and low for Aulographina damage (0.13) and volume increment (0.13). Significant genetic and phenotypic correlations between Mycosphaerella damage and defoliation were low and positive. Low to moderate negative correlations occurred between Mycosphaerella damage and volume increment and between defoliation and volume increment, suggesting that Mycosphaerella leaf disease, in particular, and defoliation had deleterious effects on tree growth. However, the impact of these foliar pathogens on the volume of E. pilularis is often low, so selecting for growth and form alone in the early stages of domestication could provide acceptable gains in yield.

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Braga, Rafael Malfitano, Francisco de Assis Braga, and Nelson Venturin. "Carbono orgânico no solo sob mata nativa e florestas plantadas em longo prazo." Pesquisa Florestal Brasileira 42 (September 16, 2022): 1–10. http://dx.doi.org/10.4336/2022.pfb.42e202002121.

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A matéria orgânica do solo (MOS) exerce papel fundamental para a sustentabilidade de ecossistemas florestais. O estudo das frações da MOS possibilita avaliar a qualidade do solo sob florestas nativas ou plantadas. O objetivo dessa pesquisa foi comparar o carbono orgânico sob mata nativa e florestas plantadas, em longo prazo. Foram avaliados os estoques de carbono orgânico total (COT), as frações leve (COL) e pesada (COP) e o índice de manejo do carbono (IMC) da camada superficial de Latossolo Vermelho distroférrico, sob plantios de quatro espécies de eucaliptos australianos - Eucalyptus grandis, E. pilularis, E. cloeziana e Corymbia maculata - e Pinus caribaea var. hondurensis, com 40 anos de idade, e sob Floresta Estacional Semidecidual. C. maculata manteve estoques de COT, COP e de COL e o IMC em níveis similares aos encontrados sob a mata nativa, sendo considerada a espécie mais eficiente na ciclagem e estocagem de carbono no solo, seguida por E. cloeziana. E. pilularis e o pinus apresentaram os menores estoques de carbono e IMC.

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Monteiro, Thiago Campos, Renato da Silva Vieira, José Tarcísio Lima, Edy Eime Pereira Baraúna, Duam Matosinhos de Carvalho, and Marcelle Teodoro Lima. "Influência do lenho de tração nas propriedades físicas da madeira de Eucalyptus sp." Journal of Biotechnology and Biodiversity 1, no. 1 (2010): 6–11. http://dx.doi.org/10.20873/jbb.uft.cemaf.v1n1.monteiro.

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The reaction wood is formed in an attempt to remain upright tree in response to the action of forces such as winds, irregular crown or slope of the land that tend to incline it. In hardwoods, as in Eucalyptus, this type of wood is called tension wood and occurs in the region of the stem facing the face of force application. Indicative of the presence of this type of wood is the high shrinkage and basic density compared to normal wood. Once the basic density and shrinkage are parameters for determining the quality of the wood, this study aimed to evaluate the variation of basic density and shrinkage of opposite and tension wood along the radius in four species of Eucalyptus sp. Four tree species Eucalyptus camaldulensis, Eucalyptus maculata, Eucalyptus pilularis and Eucalyptus urophylla, with 32 years of age, were taken from an experimental planting of the Federal University of Lavras. Specimens were made to represent the diametrical variation of the opposite of tension wood in disks cut at the dbh. The results indicate that the properties of radial, tangential and volumetric shrinkage, coefficient of anisotropy and basic density did not differ statistically between the tensionand opposite wood.

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MOORE, A. E. P., H. B. MASSICOTTE, and R. L. PETERSON. "Ectomycorrhiza formation between Eucalyptus pilularis Sm. and Hydnangium carneum Wallr. in Dietr." New Phytologist 112, no. 2 (1989): 193–204. http://dx.doi.org/10.1111/j.1469-8137.1989.tb02374.x.

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Cairney, JWG, and AE Ashford. "Reducing Activity at the Root Surface in Eucalyptus pilularis - Pisolithus tinctorius Ectomycorrhizas." Functional Plant Biology 16, no. 1 (1989): 99. http://dx.doi.org/10.1071/pp9890099.

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Mycorrhizal and non-mycorrhizal areas of root systems of Eucalyptus pilularis Sm. seedlings, grown in growth pouches and inoculated with Pisolithus tinctorius (Pers.) Coker & Couch, were compared with regard to their surface reducing activity. Mycorrhizal roots were shown to reduce silver bromide, ferric EDTA and a higher oxide of manganese while non-mycorrhizal roots of the same plants did not. A number of ecto- and endomycorrhizal fungi were screened for reducing ability. All fungal isolates tested, with the exception of Hebeloma crustuliniforme and a suspected ectomycorrhizal symbiont from Pisonia grandis roots, were capable of reducing a manganic oxide.

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Birk, Elaine M., and R. G. Bridges. "Recurrent fires and fuel accumulation in even-aged blackbutt (Eucalyptus pilularis) forests." Forest Ecology and Management 29, no. 1-2 (1989): 59–79. http://dx.doi.org/10.1016/0378-1127(89)90056-x.

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Muhairwe, Charles K. "Taper equations for Eucalyptus pilularis and Eucalyptus grandis for the north coast in New South Wales, Australia." Forest Ecology and Management 113, no. 2-3 (1999): 251–69. http://dx.doi.org/10.1016/s0378-1127(98)00431-9.

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Alcorn, Philip J., David I. Forrester, R. Geoff B. Smith, et al. "Crown structure and vertical foliage distribution in 4-year-old plantation-grown Eucalyptus pilularis and Eucalyptus cloeziana." Trees 27, no. 3 (2012): 555–66. http://dx.doi.org/10.1007/s00468-012-0809-1.

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Heinrich, PA, and JW Patrick. "Phosphorus acquisition in the soil-root system of Eucalyptus pilularis Sm. seedlings. I. Characteristics of the soil system." Soil Research 23, no. 2 (1985): 223. http://dx.doi.org/10.1071/sr9850223.

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An ancient sand-dune system located in the Myall Lakes National Park, N.S.W. (32�28'S., 152�30' E.) supports an open eucalypt forest with Eucalyptus pilularis as one of the co-dominant tree species. Profile development of the sand mass is typical of a light humic podzol. The relative pool sizes of available nutrients contained by the acidic podzol were such that phosphorus was the most limiting for the growth of E. pilularis seedlings. The bulk of seedling phosphorus was assimilated from the A, horizon of this podzol. Soil from the A, horizon was characterized by a low total level of phosphorus (= 30 �g P g-1 soil). Approximately 90% of this phosphorus was 0.1 M H2SO4 insoluble and probably organic in nature. In addition, 30% of the total phosphorus was associated with compounds containing aluminium and iron. The concentration of soluble phosphorus in the soil solution (CaCl2, extractable) was 0.36 �g P g-1 soil. Although this value is comparable to those reported for fertile soils, the amount of readily exchangeable phosphorus was found to be very low (1.43 �g P g-1 soil). Anion exchange resin studies indicated that after this pool was exhausted, release of phosphorus from slowly available sources was extremely limited (0.013 �g P g-1 soil h-1). Studies showed that transfer of phosphorus to seedling roots in A, horizon soil was predominantly a diffusive process. Moreover, the effective diffusion coefficient for phosphate (10.81 x 10-8 cm2 s-1) indicated that this process was comparatively fast.

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Silva, Paulo H. M. Da, M. Shepherd, D. Grattapaglia, and A. M. Sebbenn. "Use of genetic markers to build a new generation of Eucalyptus pilularis breeding population." Silvae Genetica 64, no. 1-6 (2015): 170–81. http://dx.doi.org/10.1515/sg-2015-0016.

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Abstract Tree improvement generally proceeds by incremental gains obtained from recurrent selection in large diverse populations but is slow due to long generation times and delay till trees reach assessment age. This places a premium upon extracting data from historic introductions used to found landraces when reinstating modern breeding programs. The value of such resources, however, may be degraded due to a lack of records on germplasm origins, pedigrees and early performance, but DNA technology may help recoup some of this value. Eucalyptus pilularis (subgenus Eucalyptus) is regarded as a premier hardwood plantation species for saw log and poles in Australia, but has not been used extensively despite early introductions and testing in many countries overseas. Here we use DNA fingerprinting to assess genetic diversity and inbreeding in historic introductions of E. pilularis to evaluate this resource in advance of a reinvigorated breeding effort for this species in Brazil. As expected, based on the available documentation for the introductions, genetic diversity relative to Australian reference populations does not appear to be compromised, and there was unlikely to be excessive inbreeding. Also, favorable, was the likelihood that further selections should not unduly increase the relationship in the next generation. Interestingly, we note the importance of testing widely adapted sources of germplasm when making introductions, as provenances which performed poorly in tests on productive sites in Australia, may have value when matched with lower fertility sites overseas.

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Braga, Rafael Malfitano, Moacir de Souza Dias Junior, Francisco de Assis Braga, and Thiago de Paula Protásio. "Physical attributes of distroferric red latosol under four eucalypt species over the long term." Ciência e Agrotecnologia 37, no. 4 (2013): 313–22. http://dx.doi.org/10.1590/s1413-70542013000400004.

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Planted forests have been increasingly highlighted in the Brazilian scenario, maintaining status regarding their environmental effects, among them those related with soils. The objectives of this work were to evaluate and to compare the physical attributes of a typic distroferric Red Latosol under Eucalyptus cloeziana, E. grandis, E. Pilularis and Corymbia maculata coverage, 37 years after being planted at the Federal University of Lavras campus. The soil profiles were sampled down to 1 m depth in order to analyze their particle-size distribution, porosity, structure and water retention. The results were submitted to analysis of variance, Scott-Knott multiple means comparison test, correlations and linear regression. The profiles presented appropriated soil physical conditions to provide good plant development. The bulk density and microporosity increased in depth while the total pore volume, macroporosity and aggregates stability decreased in depth. The soil profiles under E. cloeziana and C. maculata coverage presented lower density, more pores, are more structured, present lower water retention capability and lower water availability than the soil profiles under E. grandis and E. pilularis.

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Cassidy, M., G. Palmer, K. Glencross, J. D. Nichols, and R. G. B. Smith. "Stocking and intensity of thinning affect log size and value in Eucalyptus pilularis." Forest Ecology and Management 264 (January 2012): 220–27. http://dx.doi.org/10.1016/j.foreco.2011.10.007.

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Yazaki, Y., P. J. Collins, and T. Iwashina. "Extractives from Blackbutt(Eucalyptus pilularis)Wood which Affect Gluebond Quality of Phenolic Resins." Holzforschung 47, no. 5 (1993): 412–18. http://dx.doi.org/10.1515/hfsg.1993.47.5.412.

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Thomas, D. S. "Survival and growth of drought hardened Eucalyptus pilularis Sm. seedlings and vegetative cuttings." New Forests 38, no. 3 (2009): 245–59. http://dx.doi.org/10.1007/s11056-009-9144-9.

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Baroni, Gabriel de Resende, Cristiane de Pieri, Edson Luiz Furtado, and Paulo Henrique Muller da Silva. "Genetic parameters of Eucalyptus pilularis resistance to rust in controlled and field conditions." Australasian Plant Pathology 49, no. 1 (2019): 65–68. http://dx.doi.org/10.1007/s13313-019-00671-x.

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Oliveira, José Tarcísio da Silva, Mario Tomazello Filho, and Nilton César Fiedler. "Avaliação da retratibilidade da madeira de sete espécies de Eucalyptus." Revista Árvore 34, no. 5 (2010): 929–36. http://dx.doi.org/10.1590/s0100-67622010000500018.

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As variações na retratibilidade no lenho das árvores são as principais causas dos defeitos de secagem, como o empenamento e fendilhamento das peças de madeira. Os tipos de madeira presentes em um tronco estão relacionados com as variações dessa importante propriedade física. Este trabalho teve como objetivo estudar a retratibilidade da madeira de sete espécies de eucaliptos. Os parâmetros de retratibilidade, bem como a sua variação na direção radial da medula em direção à periferia do tronco de sete espécies de eucaliptos, foram avaliados de acordo com a Norma brasileira. De modo geral, os resultados indicaram que as espécies de eucaliptos estudados possuíam madeira com elevada retratibilidade. À exceção das madeiras de Eucalyptus tereticornis e E. pilularis, as demais espécies estudadas apresentaram valores menores de retratibilidade na região próxima da medula.

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Ilic, J. "WOODS OF EUCALYPTUS – PART 2 DISTINGUISHING SPECIES FROM THE STRINGYBARK GROUP: (E. baxteri, E. globoidea, E. muelleriana, E. macrorhyncha, E. consideniana and E. sieberi)." IAWA Journal 23, no. 3 (2002): 305–18. http://dx.doi.org/10.1163/22941932-90000306.

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In Australia the stringybark group of eucalypts comprises at least 25 species of Eucalyptus from the botanical series Capitellatae. The species are abundant in south-eastern Australia, and four groups (white, yellow, brown and red) of the commercial timber come mainly from Victoria and New South Wales and these include E. baxteri (Benth.) Maiden, E. globoidea Blakely & Blakely, E. macrorhyncha F. Muell. ex Benth., and E. muelleriana Howitt. As with the ‘ash group’ of eucalypts, the timbers are similar in appearance, and although they are heavier than the ash group, there are some overlapping characteristics. Two additional species, E. consideniana Maiden (yertchuk) and E. sieberi L.A.S. Johnson (silvertop ash), outside the stringybark group, were studied as their woods also closely resemble those from the stringybark group.Differences were found between the species in vessel diameter and density, ray content, amount of axial parenchyma, distinctness of growth rings, basic density and wood colour. Most of the useful differences arise from extremes of these characteristics. Eucalyptus macrorhyncha (red stringybark) can be identified when the pore number is greater than 15/mm2, the average maximum tangential diameter is less than 140 μm, by ray width and content and from the definite pink-reddish colour. Eucalyptus sieberi can be distinguished definitely from E. muelleriana, and fairly certainly from E. globoidea and E. baxteri by uniformly distributed deposits in the rays. Considerable overlap in wood structure exists among E. muelleriana, E. globoidea and E. baxteri making their separation on wood characteristics impractical. Photomicrographs illustrating various points have been included together with a key for separation between the species studied. Similarities to other species including E. acmenoides, E. microcorys, E. obliqua, E. phaeotricha, and E. pilularis are discussed.

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Ashford, A. E., R. L. Peterson, D. Dwarte, and G. A. Chilvers. "Polyphosphate granules in eucalypt mycorrhizas: determination by energy dispersive x-ray microanalysis." Canadian Journal of Botany 64, no. 3 (1986): 677–87. http://dx.doi.org/10.1139/b86-086.

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Eucalypt mycorrhizas contain electron-opaque granules that are rich in P. The major element accompanying P is Ca, although small amounts of other elements such as K and Mg and possibly also S are sometimes present. Neither P nor Ca was found in equivalent amounts in other areas of the cells analysed. The P-rich granules occurred in vacuoles in the inner sheath and Hartig net of the two species studied, Eucalyptus pilularis and Eucalyptus fastigata. Their location and staining indicated that they were the same as the metachromatic granules observed by light microscopy and that both contained polyphosphate. Other deposits in vacuoles did not contain detectable amounts of these elements and correlated transmission electron microscopy showed that several types of vacuolar deposit were present. Fixation conditions had little effect on the composition of the P-rich granules, which were the same in both species, but staining with lead salts apparently removed elements, in particular Ca. Other cellular materials, notably phenols, also stained with lead salts, even at acid pH, and there is a risk therefore of misidentifying vacuolar phenols as polyphosphate. The significance of the P-rich granules and their high Ca content is discussed in relation to P accumulation in the fungal sheath and transfer to the host.

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Mulligan, DR, and JW Patrick. "Phosphorus and Carbon Budgets of Eucalyptus pilularis Smith Seedlings During Their Cotyledonary Phase of Growth." Functional Plant Biology 12, no. 5 (1985): 535. http://dx.doi.org/10.1071/pp9850535.

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The budgeting of phosphorus and carbon in Eucalyptus pilularis Smith seedlings raised in a phosphorus-deficient sandy podzol was examined for the first 35 days of seedling growth. During this period, the photosynthetic cotyledons were a major source of both phosphorus and carbon. At 7 days from sowing, the cotyledons were gross importers of assimilated phosphorus but switched to gross (day 15) and then net (day 20) export in response to the current rate of phosphorus acquisition and the phosphorus demand by other organs. However, the cotyledons retained the capacity to revert to phosphorus import. This strategy would permit the seedlings to take advantage of any favourable fluctuations that may occur in soil phosphorus supply. Initial cotyledonary phosphorus export was directed basipetally to the roots and soil. From 20 days after sowing the partitioning pattern altered, with exported phosphorus moving solely to the expanding leaves. Carbon exported from the cotyledons initially supplied all sinks although, once the first leaf pair was self-supportive for carbon, the roots and stem received a higher proportion of exported cotyledonary carbon. The efficiency of phosphorus redistribution was considered to minimize the consequences of a rapidly depleted pool of readily available soil phosphorus on seedling growth. The seedlings also possessed a strategy of maximizing the investment of carbohydrate into dry matter by keeping respiratory losses to a minimum. A proposed link between the distribution of the limiting phosphate ion and carbon distribution may be a contributing factor to the success of E. pilularis in the phosphorus-deficient soil.

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Carnegie, A. J. "First Report of Puccinia psidii (Myrtle Rust) in Eucalyptus Plantations in Australia." Plant Disease 99, no. 1 (2015): 161. http://dx.doi.org/10.1094/pdis-09-14-0901-pdn.

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Puccinia psidii Winter (myrtle rust, eucalyptus rust) is a significant pathogen of Eucalyptus plantations in Brazil, causing reduced growth, stem malformation, and in severe cases, tree death (3). It has a wide host range in the Myrtaceae, with over 445 species in more than 72 genera (4). As such, P. psidii has long been a threat to Australia, where many ecosystems are dominated by Myrtaceae and industries are reliant on myrtaceous hosts, including almost 1 million hectares of eucalypt plantations. In April 2010, P. psidii was detected in Australia (2) and is now established along the east coast from southern New South Wales to far north Queensland (1,5). Although known to cause severe damage to eucalypt seedlings and coppice in native forests (5), it had not been found affecting eucalypt plantations in Australia. Surveys for P. psidii were thus initiated in eucalypt plantations in NSW from the central coast (33°06′40.0″ S, 151°18′13.8″ E) to the NSW–Queensland border, encompassing 55 plantations. Two to four 100-tree transects were conducted per plantation, during spring and summer. Symptoms were first detected in December 2011 in a 6-month-old Eucalyptus agglomerata Maiden plantation on the central coast. Further surveys until summer 2014 identified P. psidii on E. pilularis Sm., E. cloeziana F. Muell., and E. grandis (Hill) Maiden in young plantations from the central coast to the north coast (30°24′20.2″ S, 152°55′57.9″ E) of NSW. Necrotic lesions and yellow pustules typical of P. psidii were present on immature leaves and shoots, often causing leaves to buckle and die. Urediniospores were globose to subglobose, yellowish brown, 15 to 20 × 18 to 23 μm, single-celled, and finely echinulate, with a prominent tonsure on the majority of spores. Teliospores were cylindrical to ellipsoidal with a rounded apex, tan brown, 25 to 45 × 15 to 25 μm, and two-celled, with remnants of a pedicel. These morphological characteristics are consistent with those of P. psidii from Australia and elsewhere (5). Simple Sequence Repeats developed from genome sequencing of an Australian isolate of P. psidii revealed no variation among 15 isolates of P. psidii from Australia and Hawaii, including an isolate from an E. pilularis plantation in NSW (K. S. Sandhu and R. F. Park, unpublished), corroborating the morphological identification. This is the first report of this significant pathogen in eucalypt plantations in Australia. P. psidii was found in only five plantations during the current surveys, in trees 6 months to 2 years old, with only a low incidence (1%) per plantation. Repeat surveys revealed no ongoing disease in the same plantations after trees were three years of age. Moreover, P. psidii was found only in plantations surrounded by native forest stands, which harbor a large reservoir of susceptible hosts, such as Rhodamnia rubescens (Benth.) Miq. The strain of P. psidii that entered Australia is currently not causing serious disease in eucalypt plantations. However, there is a need to continue quarantine restrictions to reduce the chance of another, more aggressive strain of P. psidii entering Australia. References: (1) A. J. Carnegie and J. R. Lidbetter. Australas. Plant Pathol. 41:13, 2012. (2) A. J. Carnegie et al. Australas. Plant Pathol. 39:463, 2010. (3) T. A. Coutinho et al. Plant Dis.82:819, 1998. (4) F. Giblin and A. J. Carnegie. Puccinia psidii (myrtle rust)—Global host list. Retrieved 2 October 2014 from http://www.anpc.asn.au/resources/Myrtle_Rust.html . (5) G. S. Pegg et al. Plant Pathol. 63:1005, 2014.

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Alcorn, Philip, David Forrester, Dane Thomas, et al. "Changes in Whole-Tree Water Use Following Live-Crown Pruning in Young Plantation-Grown Eucalyptus pilularis and Eucalyptus cloeziana." Forests 4, no. 1 (2013): 106–21. http://dx.doi.org/10.3390/f4010106.

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Pook, EW. "Canopy Dynamics of Eucalyptus maculata Hook. III Effects of Drought." Australian Journal of Botany 33, no. 1 (1985): 65. http://dx.doi.org/10.1071/bt9850065.

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The severe 7-month drought in coastal and adjacent tablelands regions of New South Wales in the latter half of 1980 caused heavy leaf-shedding, wilting of persistent foliage and bark-splitting in forest eucalypts. Defoliation of individual sample trees of E. maculata ranged from 50 to 97% of pre-drought leaf area. Leaf area index of a stand of E. maculata was reduced from c. 4.3 to 0.8. E. maculata was less susceptible to drought than E. globoidea and E. pilularis but more susceptible than E. Paniculata in mixed forest on the same site. Rapid recovery of the canopy occurred in autumn after the break of the drought and leaf areas of all sample trees attained pre-drought values or above by summer 1981-82. Leaf-shedding in response to severe water deficit appears to have been of adaptive significance in enhancing tree survival in a drought of this duration.

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Massicotte, H. B., R. L. Peterson, and A. E. Ashford. "Ontogeny of Eucalyptus pilularis – Pisolithus tinctorius ectomycorrhizae. I. Light microscopy and scanning electron microscopy." Canadian Journal of Botany 65, no. 9 (1987): 1927–39. http://dx.doi.org/10.1139/b87-264.

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Eucalyptus pilularis Sm. seedlings were grown in growth pouches and inoculated with the broad host range ectomycorrhizal fungus Pisolithus tinctorius (Pers.) Coker & Couch. External morphology and internal structure of all stages of ectomycorrhiza formation on first-order and second-order laterals were studied. The morphology of the ectomycorrhiza is dependent on the stage of lateral root development at the time of colonization by fungal hyphae. Emerging lateral roots are colonized by hyphae originating from the inner mantle of the parent root. The Hartig net does not spread internally from the parent root to the lateral root. All primary tissues of mycorrhizal lateral roots are differentiated close to the apical meristem. The epidermal cells undergo a marked increased in radial growth instead of the usual elongation in the axial plane. The hypodermis is a barrier to the penetration of hyphae so that Hartig net formation is paradermal only. Older portions of ectomycorrhizal roots show a degeneration of the epidermis, hypodermis, and cortex excluding the endodermis, and a proliferation of hyphae in these senescing tissues.

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Cassidy, M., G. Palmer, and R. G. B. Smith. "The effect of wide initial spacing on wood properties in plantation grown Eucalyptus pilularis." New Forests 44, no. 6 (2013): 919–36. http://dx.doi.org/10.1007/s11056-013-9385-5.

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Eleoterio, Jackson Roberto, Tania Regina Bagattoli, Kerling Fabiane Hornburg, and Cláudia Mariana Kirchheim da Silva. "Secagem drástica de madeiras de Eucalyptus e Corymbia fornece informações para a elaboração de programas de secagem." Pesquisa Florestal Brasileira 35, no. 84 (2015): 451. http://dx.doi.org/10.4336/2015.pfb.35.84.696.

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O objetivo deste trabalho foi avaliar a secagem drástica de pequenas amostras como alternativa metodológica para a definição de programas de secagem umidade-temperatura, aplicando-a para madeira de Corymbia torelliana, Eucalyptus cloeziana, E. grandis x E. urophylla, E. pilularis e E. resinifera e avaliar a possibilidade de agrupar espécies com recomendações semelhantes. Foram utilizadas peças com dimensões iniciais de 100 mm de comprimento, 50 mm de largura e 10 mm de espessura. Essas foram mantidas em estufa a 100 °C, até que o teor de umidade atingisse valores inferiores a 5%. Durante a secagem drástica as peças foram pesadas em intervalos de 1 h e foram medidos o comprimento e a largura das rachaduras, utilizando paquímetro e calibrador de folga. Em função das diferenças nas temperaturas iniciais, finais e no potencial de secagem, observou-se um grupo que suporta condições de secagem mais severas, formado por Corymbia torelliana e E. grandis x E. urophylla e outro que demanda condições mais suaves, formado por E. pilularis e E. cloeziana. A madeira de E. resinifera pode ser submetida à secagem nas condições definidas para quaisquer dos grupos.

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Coutinho, João Luis Barboza, Venézio Felipe dos Santos, Rinaldo Luiz Caraciolo Ferreira, and José Carlos Barboza Nascimento. "Avaliação do comportamento de espécies de Eucalyptus spp. na Zona da Mata Pernambucana. I: Resultados do primeiro ano - 2001." Revista Árvore 28, no. 6 (2004): 771–75. http://dx.doi.org/10.1590/s0100-67622004000600001.

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O trabalho objetivou selecionar, para a região da Zona da Mata de Pernambuco, cultivares de Eucalyptus e, ou, identificar clones com alto potencial de produtividade. As espécies Eucalyptus saligna Sm., E. dunnii Maiden, E. benthamii Maiden & Cambage, E. tereticornis Sm., E. urophylla S.T. Blake, E. pilularis Sm., E. camaldulensis Dehnh., E. robusta Sm., E. grandis W. Hill ex Maiden e E. citriodora Hook estão sendo avaliadas por sete anos, observando-se as seguintes variáveis: sobrevivência (%), bifurcação (%), altura (m) e diâmetro (cm). O delineamento utilizado foi em blocos ao acaso, com quatro repetições, sendo a parcela constituída de 35 plantas. Aos 12 meses, as espécies apresentaram sobrevivência superior a 95,0%, não foi registrado bifurcação na espécie E. dunnii.e E. citriodora exibiu o valor máximo de 35,0%, enquanto nas demais espécies os valores foram inferiores a 15,0%. Os melhores desempenhos de altura e diâmetro ocorreram em E. citriodora, E. urophylla, E. camaldulensis, E. saligna, E. grandis e E. dunnii.

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Oliveira, José Tarcísio de, Mário Tomasello, and José de Castro Silva. "Resistência natural da madeira de sete espécies de eucalipto ao apodrecimento." Revista Árvore 29, no. 6 (2005): 993–98. http://dx.doi.org/10.1590/s0100-67622005000600019.

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A resistência natural ao apodrecimento se constitui numa importante propriedade da madeira. Em se tratando das madeiras provenientes do gênero Eucalyptus, tal atributo se torna ainda mais importante, uma vez que tais madeiras são, na grande maioria das vezes, de difícil tratabilidade pelos métodos de tratamento convencionais. O objetivo do presente trabalho foi determinar a resistência natural da madeira de sete espécies de eucalipto em ensaio acelerado de laboratório ao fungo causador da podridão-parda Gloeophyllum trabeum. Foram ensaiadas madeiras das espécies de Corymbia citriodora, Eucalyptus tereticornis, E. paniculata, E. pilularis, E. cloeziana, E. urophylla e E. grandis com 16 anos de idade, que cresceram na Estação Experimental de Anhembi, em São Paulo, pertencente ao Departamento de Ciências Florestais da ESALQ/USP. No que diz respeito ao apodrecimento causado pelo fungo Gloeophyllum trabeum, a madeira de eucalipto das sete espécies pode ser considerada resistente, uma vez que os valores de perda de massa foram sempre inferiores a 10%.

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Alcorn, Philip J., Patrick Pyttel, Jürgen Bauhus, et al. "Effects of initial planting density on branch development in 4-year-old plantation grown Eucalyptus pilularis and Eucalyptus cloeziana trees." Forest Ecology and Management 252, no. 1-3 (2007): 41–51. http://dx.doi.org/10.1016/j.foreco.2007.06.021.

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Mulligan, DR, and JW Patrick. "Carbon and Phosphorus Assimilation and Deployment in Eucalyptus pilularis Smith Seedlings With Special Reference to the Role of the Cotyledons." Australian Journal of Botany 33, no. 5 (1985): 485. http://dx.doi.org/10.1071/bt9850485.

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Early growth of glasshouse-raised Eucalyptus pilularis Smith seedlings in a phosphorus-deficient soil was divided into a cotyledonary and a post-cotyledonary phase. The delineation was made on the basis of cotyledon excision experiments which ascertained the stage (between 32 and 39 days from sowing) beyond which the cotyledons no longer made an essential contribution to normal seedling development. The relative growth rate of the E. pilularis seedlings during the cotyledonary phase was at least comparable with that of many fertilized tree species. The expression of this characteristic in such a phosphorus-deficient soil was considered a consequence of the contributions of both carbon and phosphorus from the cotyledons. Since the seed reserves of both elements were low, these organs were established as major sources largely through immediate post-emergence events. The cotyledons rapidly developed photosynthetic capacity and were the dominant sink for assimilated phosphorus during the week following emergence. Phosphorus gains by the seedlings over this period (up to 16 days from sowing) doubled the seed reserve level of phosphorus (7.5 μg). Beyond this time, however, due to the rapid depletion of readily available soil phosphorus, phosphorus uptake abruptly declined. Concurrent with this decline, the cotyledons switched from being net importers to net exporters of phosphorus. Transfers of seedlings between high and zero phosphorus conditions demonstrated that this switch in cotyledonary role was induced when demand for phosphorus by other sinks could not be met by the current rate of phosphorus assimilation.

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Santos, Leonardo David Tuffi, Marcela Thadeo, Lourdes Iarema, Renata Maria Strozi Alves Meira, and Francisco Affonso Ferreira. "Foliar anatomy and histochemistry in seven species of Eucalyptus." Revista Árvore 32, no. 4 (2008): 769–79. http://dx.doi.org/10.1590/s0100-67622008000400019.

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This work aimed to describe the foliar anatomy of seven species of Eucalyptus, emphasizing the characterization of secretory structures and the chemical nature of the compounds secreted and /or present in the leaves. Anatomical characterization and histochemical evaluation to determine the nature and localization of the secondary compounds were carried out in fully expanded leaves, according to standard methodology. Anatomical differences were verified among the species studied, especially in E. pyrocarpa. Sub-epidermal cavities were the only secretory structures found in the seven species studied, with higher density in E. pellita and lower in E. pilularis. The following compounds were histochemically detected: lipophilic compounds, specifically lipids of the essential or resin-oil type and sesquiterpene lactones found in the lumen of the cavities of the seven species; and hydrophilic compounds, of the phenolic compound type found in the mesophyll of all the species studied and on the epidermis of some of them. The results confirmed the complexity of the product secreted by the cavities, stressing the homogeneous histochemistry nature of these compounds among the species. However, the phenolic compounds results may be an indication of important variations in adaptations and ecological relations, since they show differences among the species.

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Alcorn, Philip J., Jürgen Bauhus, Dane S. Thomas, Ryde N. James, R. Geoff B. Smith, and Adrienne B. Nicotra. "Photosynthetic response to green crown pruning in young plantation-grown Eucalyptus pilularis and E. cloeziana." Forest Ecology and Management 255, no. 11 (2008): 3827–38. http://dx.doi.org/10.1016/j.foreco.2008.03.030.

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