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Registros recuperados: 6
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Indices de anillos de crecimiento en coníferas del eje neovolcánico transversal de México. Colegio de Postgraduados
Martínez Molina, Gabriel.
Se determinaron índices de crecimiento a partir de los anillos anuales en Abies religiosa (Kunth Schltdl. et Cham) (oyamel) y Pinus hartwegii (Lindl.) (pino) en un transecto sobre el Eje Neo-volcánico Transversal, en México. El muestreo se repitió en sitios con condiciones ambientales similares en seis montañas del centro de México, donde se desarrollan ambas especies forestales. Las montañas seleccionadas fueron: Nevado de Colima, Pico de Tancítaro, Nevado de Toluca, Cerro Tláloc, La Malinche y Pico de Orizaba. Se colectaron virutas de incremento de al menos 20 árboles longevos de cada especie en cada sitio; sin embargo, para fines de este estudio se seleccionaron los árboles más representativos quedando entre 6 y 17 árboles de cada especie en cada...
Palavras-chave: Crecimiento radial; Bosques de alta elevación; Indicadores de clima; Radial growth; High altitude forests; Climate change indicators; Forestal; Maestría.
Ano: 2011 URL: http://hdl.handle.net/10521/553
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Indices de anillos de crecimiento en coníferas del eje neovolcánico transversal de México. Colegio de Postgraduados
Martínez Molina, Gabriel.
Se determinaron índices de crecimiento a partir de los anillos anuales en Abies religiosa (Kunth Schltdl. et Cham) (oyamel) y Pinus hartwegii (Lindl.) (pino) en un transecto sobre el Eje Neo-volcánico Transversal, en México. El muestreo se repitió en sitios con condiciones ambientales similares en seis montañas del centro de México, donde se desarrollan ambas especies forestales. Las montañas seleccionadas fueron: Nevado de Colima, Pico de Tancítaro, Nevado de Toluca, Cerro Tláloc, La Malinche y Pico de Orizaba. Se colectaron virutas de incremento de al menos 20 árboles longevos de cada especie en cada sitio; sin embargo, para fines de este estudio se seleccionaron los árboles más representativos quedando entre 6 y 17 árboles de cada especie en cada...
Palavras-chave: Crecimiento radial; Bosques de alta elevación; Indicadores de clima; Radial growth; High altitude forests; Climate change indicators; Forestal; Maestría.
Ano: 2011 URL: http://hdl.handle.net/10521/553
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Selection of culture media and in vitro assessment of temperature-dependent development of Nomuraea rileyi Neotropical Entomology
Edelstein,Julio D.; Lecuona,Roberto E.; Trumper,Eduardo V..
In vitro development - radial growth and sporulation - of Nomuraea rileyi isolates from Anticarsia gemmatalis Hübner and Plusiinae larvae was studied on four culture media: Sabouraud, maltose, agar and yeast - SMAY; SMAY plus rice extract - SMAYR; complete medium for N. rileyi - CMNr and maltose agar yeast with potato extract - MAYP. Their development on a selected medium (MAYP) was analysed at five temperatures. Two mathematical models were fitted to in vitro and in vivo temperature dependent radial growth rates and thermal requirements were estimated. The medium with potato and yeast extract induced the highest growth rate in most cases, while SMAY induced the lowest rates for the tested isolates. Estimated optimum temperatures for mycelium in vitro...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Entomopathogenic fungus; Radial growth; Mathematical model; Biological control.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2004000600011
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Studies on cambial activity: advances and challenges in the knowledge of growth dynamics of Brazilian woody species Anais da ABC (AABC)
CALLADO,CÁTIA H.; VASCONCELLOS,THAÍS J. DE; COSTA,MONIQUE S.; BARROS,CLAUDIA F.; ROIG,FIDEL A.; TOMAZELLO-FILHO,MÁRIO.
The lack of specific research on the sequence of events that determine plant growth from meristem until wood formation represents a gap in the knowledge of growth dynamics in woody species. In this work, we surveyed published studies concerning cambial activity of Brazilian native species aiming at allowing the comparison of applied methods and obtained results. The annual cambial seasonality was observed in all the investigated species. Nevertheless, we found high heterogeneity in the used methodologies. As a result from this analysis, our opinion points to the need for standardizing sampling protocols and for discussing the suitability of experimental designs. This will help to define with greater precision the factors that determine the radial growth in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Wood formation; Growth rings; Radial growth; Dendrochronology.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000100277
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Monitoring the effect of pyrene on the germination and radial growth of the wild and mutant strains of Rhizopus arrhizus UCP402 BABT
Shiosaki,Ricardo Kenji; Albuquerque,Clarissa Daisy da Costa; Okada,Kaoru; Fukushima,Kazutaka; Campos-Takaki,Galba Maria.
The physiological mutant of Rhizopus arrhizus was obtained in the pyrene resistance gradient test. Comparative studies were carried out about the behavior of the germination process and the radial growth of the mutant and wild strains of R. arrhizus UCP 402. Sabouraud Sucrose and Yeast Malt Broth cultures containing pyrene (10 mg/L) induced the germination process of the sporangiospores of the wild and mutant strains of R. arrhizus. The radial growth of the strains was inversely proportional to the pyrene concentration in the culture medium. The results showed an adaptation of R. arrhizus UCP 402x (mutant) in the pyrene (50mg/L) and suggested a higher ability of application in the removal of pyrene from the contaminated areas.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pyrene; Rhizopus arrhizus; Mutant; Radial growth; Germination.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000300024
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Morphological changes and growth of filamentous fungi in the presence of high concentrations of PAHs BJM
Zafra,German; Absalón,Angel E.; Cortés-Espinosa,Diana V..
In this study, we evaluated the effect of low and high molecular weight polycyclic aromatic hydrocarbons (PAHs), i.e., Phenanthrene, Pyrene and Benzo[a]pyrene, on the radial growth and morphology of the PAH-degrading fungal strains Aspergillus nomius H7 and Trichoderma asperellum H15. The presence of PAHs in solid medium produced significant detrimental effects on the radial growth of A. nomius H7 at 4,000 and 6,000 mg L−1 and changes in mycelium pigmentation, abundance and sporulation ability at 1,000–6,000 mg L−1. In contrast, the radial growth of T. asperellum H15 was not affected at any of the doses tested, although sporulation was observed only up to 4,000 mg L−1 and as with the H7 strain, some visible changes in sporulation patterns and mycelium...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Polycyclic aromatic hydrocarbons (PAHs); Bioremediation; Radial growth; Sporulation; Fungal physiology.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000300937
Registros recuperados: 6
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