La alelopatía es un fenómeno que involucra la producción de metabolitos secundarios que influyen en el crecimiento de las plantas, pero este potencial alelopático ha sido poco estudiado en la simbiosis rizobio-leguminosa. Esta investigación tuvo los siguientes objetivos: 1) evaluar el potencial alel...
ABSTRACT Fertilization in areas of forest plantations is needed to supplement plants´ nutritional needs until harvest. An experiment was performed to check the influence of fertilization on levels of ash, carbon and C/N relation in Schizolobium amazonicum. Soil liming was performed and fertilization occ...
Carbono/análisis,
Carbono/química,
Ceniza del Carbón/análisis,
Ceniza del Carbón/química,
Fabaceae/química,
Fabaceae/efectos de los fármacos,
Fabaceae/fisiología,
Fertilizantes,
Bosques,
Nitrógeno/análisis,
Nitrógeno/química,
Fósforo/química,
Potasio/química,
Valores de Referencia,
Reproducibilidad de los Resultados,
Suelo/química,
Factores de Tiempo
ABSTRACT The aim of this study was to evaluate gas exchange, efficiency of the photosynthetic apparatus, and antioxidant activity in Copaifera langsdorffii Desf. The seedlings were cultivated under different conditions of water availability, in order to improve the utilization efficiency of available wat...
Antioxidantes/metabolismo,
Dióxido de Carbono/metabolismo,
Clorofila/metabolismo,
Fabaceae/clasificación,
Fabaceae/metabolismo,
Fabaceae/fisiología,
Estomas de Plantas/metabolismo,
Distribución Aleatoria,
Plantones/metabolismo,
Factores de Tiempo,
Agua/metabolismo
Abstract During germination, orthodox seeds become gradually intolerant to desiccation, and for this reason, they are a good model for recalcitrance studies. In the present work, physiological, biochemical, and ultrastructural aspects of the desiccation tolerance were characterized during the germination...
Desecación,
Fabaceae/genética,
Fabaceae/crecimiento & desarrollo,
Fabaceae/fisiología,
Fabaceae/ultraestructura,
Germinación,
Proteínas de Plantas/metabolismo,
Semillas/genética,
Semillas/crecimiento & desarrollo,
Semillas/fisiología,
Semillas/ultraestructura,
Árboles/genética,
Árboles/crecimiento & desarrollo,
Árboles/fisiología,
Árboles/ultraestructura
Abstract Flood events in riparian forests of southern Brazil, can be characterized as unpredictable and of low magnitude with an average duration of less than 15 days. Inga marginata is an evergreen tree which grows in Southeast South America on a wide range of environments, including riparian forests. I...
Aclimatación,
Fabaceae/anatomía & histología,
Fabaceae/crecimiento & desarrollo,
Fabaceae/fisiología,
Inundaciones,
Luz,
Plantones/anatomía & histología,
Plantones/crecimiento & desarrollo,
Plantones/fisiología,
Solubilidad,
Azúcares/metabolismo
Abstract The establishment and maintenance of plant species in the Chaco, one of the widest continuous areas of forests in the South American with sharp climatic variations, are possibly related to biological features favoring plants with particular defenses. This study assesses the physical and chemical...
Abstract Few works report the use of degree-days (DD) – used in crops to predict events and schedule management activities – to describe the germination of tropical trees. The cardinal temperatures (base, optimum and ceiling temperature) for germination of the species may vary depending on th...
AbstractPlants have limited resources to invest in reproduction, vegetative growth and defense against herbivorous. Trade-off in resources allocation promotes changes in plant traits that may affect higher trophic levels. In this study, we evaluated the trade-off effect between years of high and low frui...
