Osmotic Adjustment
Mostrando 13-24 de 75 artigos, teses e dissertações.
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13. Accumulation of organic and inorganic solutes in NaCl-stressed sorghum seedlings from aged and primed seeds
Although it has been known that the seed's physiological potential affects its response to osmoconditioning and abiotic stresses, researches involving seed aging and priming associated to abiotic stresses are scarce. The aim of this work was to evaluate the role of seed priming on salt tolerance in sorghum seedlings from seeds with two vigor levels (aged or
Scientia Agricola. Publicado em: 2011-12
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14. Efeito do deficit hidrico no solo sobre o comportamento estomatico e potencial da agua em mudas de seringueira.
O objetivo deste trabalho foi avaliar o efeito do estresse hidrico sobre o potencial da agua na folha da seringueira, a resistencia estomatica, e a recuperacao do potencial de agua na folha. Progenies de polinizacao aberta de seringueira (Hevea spp.), provenientes dos clones IAN 873, RRIM 600, IAN 713 e de pes francos de Hbr, foram cultivadas sob condicoes c
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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15. AlteraÃÃes fisiolÃgicas induzidas por estresses abiÃticos em plantas jovens de pinhÃo-manso / PHYSIOLOGICAL CHANGES INDUCED BY ABIOTIC STRESSES IN PHYSIC NUT YOUNG PLANTS
In this work were studied diverse physiological mechanisms, as the osmotic adjustment, photosynthesis, including gas exchange and chlorophyll fluorescence parameters, as well the oxidative responses in physic nuts submitted to different abiotic stresses as: salinity, drought and high temperature. The first experiment aimed to study the effects of increase of
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/10/2009
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16. Fotossíntese, osmorregulação e crescimento inicial de quatro variedades de cana-de-açúcar submetidas à deficiência hídrica. / Photosynthesis, osmorregulation and initial growth of four sugarcane varieties submitted to water deficiency.
The water deficiency of soil is a problem that affects good part of the areas cultivated in the world, over all, to those situated ones in the half-barren regions. The sugarcane is a culture in expansion in the Northeast of Brazil, where the limitation in the water availability for the plant affects the growth and the development of the plant, causing, exces
Publicado em: 2008
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17. Produção relativa do feijoeiro irrigado com água salina / Relative production of the bean plant irrigated with saline water
There is a need for studies concerning to the bean plant (Phaseolus vulgaris L.) cropping in arid and semi-arid regions under salinity conditions. So, this study was carried out with the following objectives: a) to determine the saline status of the soil irrigated with fresh water (0.07 dS.m-1) and saline water (2 dS.m-1); b) to determine the parameters for
Publicado em: 2006
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18. Leaf gas exchange in Green-Dwarf coconut submitted to cycles of water deficit / Trocas gasosas em coqueiro anão-verde submetido a ciclos de deficiência hídrica
Com o objetivo de avaliar as trocas gasosas em nível foliar, as relações hídricas, a capacidade de ajuste osmótico e a regulação estomática em plantas jovens de coqueiro Anão-verde submetidas à deficiência hídrica, realizou-se um experimento em casa de vegetação utilizando dois ecotipos de coqueiro anão-verde do Brasil: Anão-Verde de Una (UGD
Publicado em: 2006
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19. Caracteres fisiolÃgicos e bioquÃmicos da tolerÃncia à salinidade em clones de cajueiro anÃo precoce. / Physiological and biochemical characteristics of salt tolerance of early-dwarf cashew seedlings
O presente trabalho teve por objetivo estudar as respostas fisiolÃgicas e bioquÃmicas de clones de cajueiro anÃo-precoce (Anacardium occidentale L.) ao estresse salino. Os experimentos foram conduzidos em casa de vegetaÃÃo, sendo as plÃntulas cultivadas em vasos plÃsticos contendo vermiculita. No primeiro experimento, cinco clones de cajueiro anÃo-pr
Publicado em: 2006
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20. Estudos da AssociaÃÃo MicorrÃzica Arbuscular em Mudas de Mangabeira (Hancornia Speciosa Gomes) / Estudos da AssociaÃÃo MicorrÃzica Arbuscular em Mudas de Mangabeira (Hancornia Speciosa Gomes)
The mycorrhizal association of Hancornia speciosa was investigated in five experiments using Gigaspora albida and Glomus etunicatum as inoculum. Mycorrhizal dependency, inoculum density needed for growth promotion and effect of water stress on gases exchange, solutes concentration and soil microbial activity were evaluated at the greenhouse. Native species,
Publicado em: 2004
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21. Fotossíntese, relações hídricas, estado nutricional e avaliação de caracteres secundários da produção em dois cultivares jovens de seringueira em São José do Rio Preto,SP.
This study was accomplished with two young cultivate of rubber tree, Hevea brasiliensis (Willd. ex Adr. of Juss.) Müell. Arg.], RRIM 600 and Fx 3864. This work obtained information comparatively on cultivating Fx 3864 to RRIM 600 already established in the from São Paulo Occidental Plateau, through the gas exchange, osmotic and leaf water potential, status
Publicado em: 2003
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22. Solute Accumulation in Tobacco Cells Adapted to NaCl 1
Cells of Nicotiana tabacum L. var Wisconsin 38 adapted to NaCl (up to 428 millimolar) which have undergone extensive osmotic adjustment accumulated Na+ and Cl− as principal solutes for this adjustment. Although the intracellular concentrations of Na+ and Cl− correlated well with the level of adaptation, these ions apparently did not contribute to the osm
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23. Osmotic Adjustment in Cotton (Gossypium hirsutum L.) Leaves and Roots in Response to Water Stress 1
The relative magnitude of adjustment in osmotic potential (ψs) of water-stressed cotton (Gossypium hirsutum L.) leaves and roots was studied using plants raised in pots of sand and grown in a growth chamber. One and three water-stress preconditioning cycles were imposed by withholding water, and the subsequent adjustment in solute potential upon relief of t
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24. Abscisic Acid Stimulated Osmotic Adjustment and Its Involvement in Adaptation of Tobacco Cells to NaCl 1
Osmotic adjustment of cultured tobacco (Nicotiana tabacum L. var Wisconsin 38) cells was stimulated by 10 micromolar (±) abscisic acid (ABA) during adaptation to water deficit imposed by various solutes including NaCl, KCl, K2SO4, Na2SO4, sucrose, mannitol, or glucose. The maximum difference in cell osmotic potential (Ψπ) caused by ABA treatment during ad