Light Acclimation
Mostrando 1-12 de 97 artigos, teses e dissertações.
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1. BIOPHOTONICS: ACCLIMATION OF PRE-SPROUTED SUGARCANE SEEDLINGS IN PROTECTED ENVIRONMENT
ABSTRACT Sugarcane is considered one of the main alternatives for biofuel production and an important product of Brazilian agriculture, so it is indispensable to adopt new techniques for its cultivation and management. Thus, the present study aimed to evaluate the effect of the quality of supplemental lighting, based on light-emitting diode (LED), on the acc
Eng. Agríc.. Publicado em: 12/08/2019
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2. WATER AND LIGHT STRESSES DRIVE ACCLIMATION DURING THE ESTABLISHMENT OF A TIMBER TREE UNDER DIFFERENT INTENSITIES OF RAINFOREST CANOPY COVERAGE
ABSTRACT The loss of structure, diversity and functions in the rainforests makes it necessary to develop active strategies to restore their economic and ecological values. Planting selected species can help to catalyze ecosystem restoration. The capacity of the plants to survive and grow in the rainforests, where the canopy coverage changes stochastically, i
CERNE. Publicado em: 20/05/2019
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3. Jatropha curcasand Ricinus communisdisplay contrasting photosynthetic mechanisms in response to environmental conditions
Higher plants display different adaptive strategies in photosynthesis to cope with abiotic stress. In this study, photosynthetic mechanisms and water relationships displayed byJatropha curcasL. (physic nuts) andRicinus communisL. (castor bean), in response to variations in environmental conditions, were assessed.R. communis showed higher CO2 assimilation, st
Sci. agric. (Piracicaba, Braz.). Publicado em: 2015-06
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4. Behavioral evidence for cone-based ultraviolet vision in divergent bat species and implications for its evolution
We investigated the reactions of four bat species from four different lineages to UV light: Hipposideros armiger (Hodgson, 1835) and Scotophilus kuhlii Leach, 1821, which use constant frequency (CF) or frequency modulation (FM) echolocation, respectively; and Rousettus leschenaultii (Desmarest, 1820) and Cynopterus sphinx (Vahl, 1797), cave and tree-roosting
Zoologia (Curitiba). Publicado em: 2012-04
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5. Variações morfofisiológicas na aclimatação e reaclimatação do cafeeiro à disponibilidade de luz e de água / Morphophysiological changes during acclimation and reacclimation of coffee plants in response to the light and water availability.
No presente trabalho, plantas de Coffea arabica submetidas à combinação de condições contrastantes de luz (sombra e pleno sol) e água (déficit hídrico e capacidade de campo) foram avaliadas para investigarem-se os efeitos da interação desses fatores sobre (i) a plasticidade e integração fenotípica, (ii) custos de construção, manutenção, comp
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/04/2011
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6. Limitações e potencialidades da fotossíntese no cafeeiro em função da irradiância / Photosynthetic potentialities and limitations in coffee as affectecd by irradiance
O presente estudo foi conduzido procurando-se analisar as contribuições das limitações hidráulicas, difusivas (estomática e mesofílica) e bioquímicas à fotossíntese do cafeeiro, a partição do nitrogênio dentro da maquinaria fotossintética e a ativação desta maquinaria em resposta à irradiância. Para tal, plantas de café arábica (Coffea ar
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/02/2011
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7. Growth and accumulation of carotenoids and nitrogen compounds in Gracilaria domingensis (Kütz.) Sonder ex Dickie (Gracilariales, Rhodophyta) cultured under different irradiance and nutrient levels
Effects of the interaction of irradiance and nutrient levels on growth and contents of photosynthetic pigments, carotenoids and proteins in Gracilaria domingensis (Kütz.) Sonder ex Dickie (Gracilariales, Rhodophyta) were investigated experimentally. Nutrient availability provided by dilutions of the nutrient solution of von Stosch (25 and 50%, which corresp
Revista Brasileira de Farmacognosia. Publicado em: 13/05/2011
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8. Identificação e caracterização de genes codificantes de proteínas ricas em glicina ligantes de RNA em soja (Glycine max (L.) Merril)
Molecular information on plant developmental process, as well as detailed knowledge of the interaction between stress conditions and plant response to environmental factors are essential for understanding the adaptive response. Glycine-Rich Proteins (GRP) have the amino acid glycine well represented in their primary structure. The genes encoding GRPs are dev
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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9. Plasticidade e aclimatação foliar à irradiância em espécies da Floresta Atlântica / Plasticity and leaf acclimation to light irradiance in Atlantic Forest species
A Floresta Atlântica está entre os cinco ecossistemas terrestres mais ameaçados do mundo e que apresentam maior porcentagem de diversidade e endemismo. Portanto, existe uma prioridade para a conservação e o desenvolvimento de metodologias de recuperação das regiões degradadas deste ecossistema. No entanto, o sucesso de muitos programas de recuperaç�
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/10/2010
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10. Aclimatação da maquinaria fotossintética do cafeeiro cultivado em diferentes níveis de luz e de disponibilidade hídrica / Acclimation of the photosynthetic apparatus of the coffee grown in different levels of light and water availabilities
O cafeeiro é originário das florestas tropicais da África, onde é encontrado como vegetação de sub-bosque, desenvolvendo-se sob sombra. No Brasil, no entanto, os cafezais vêm sendo conduzidos quase exclusivamente a pleno sol. Cafezais a pleno sol produzem, na maioria dos casos, mais que os plantios à sombra, o que deve envolver altos investimentos em
Publicado em: 2009
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11. Modulação da rede de trocas gasosas em um cultivar de cana-de-açúcar tolerante a seca: o papel do fósforo / Network modulation of leaf gas exchange in a drought tolerant sugarcane cultivar under water deficit: a role of Phosphorus
Drought is one of the main abiotic stresses causing significant reduction of crop yield in most of agricultural areas in tropical and subtropical regions. Particularly, water deficit is the major environmental factor limiting sugarcane yield. The objective of this study was to identify what kind of changes in the photosynthetic network would be linked to the
Publicado em: 2009
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12. Crescimento, fotossíntese e mecanismos de fotoproteção em mudas de café (Coffea arabica L.) formadas a pleno sol e à sombra / Growth, photosynthesis and mechanisms of photoprotection in coffee (Coffea arabica L.) seedlings grown under full sunlight and shade
Coffee seedlings have been traditionally grown in shaded nurseries. However, some coffee growers, with the aim of improving acclimation after moving the seedlings from the nursery to the field, are growing the seedlings under full sun. Nonetheless, most information associated with cultivation of coffee seedlings under varying light is restricted to simple mo
Publicado em: 2008