Sensitivity To Desiccation
Mostrando 1-12 de 21 artigos, teses e dissertações.
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1. Respiratory Rates of Inga Vera Willd. Subsp. Affinis (DC.) T. D. Penn. Seeds
ABSTRACT The deterioration process of recalcitrant seeds is not fully known, mainly regarding the relation between fungi activity and respiration. Inga vera seeds are characterized by their high degree of sensitivity to desiccation and for only maintaining viability for a few weeks. The objective of this study was to identify the fungus action on respiratory
Floresta Ambient.. Publicado em: 22/08/2019
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2. Drying and reduction in sensitivity to desiccation of seeds of Alibertia edulis: the influence of fruit ripening stage
ABSTRACT The intense environmental degradation in tropical regions suitable for agriculture has decreased native forest populations of plants with important fruits and medicinal properties. Alibertia edulis is a native tree from the Brazilian Cerrado. Knowledge about the effects of drying and storage on the physiological behavior of its seeds may aid in its
An. Acad. Bras. Ciênc.. Publicado em: 2018-04
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3. Characteristics of dr1790 disruptant and its functional analysis in Deinococcus radiodurans
Deinococcus radiodurans (DR) is an extremophile that is well known for its resistance to radiation, oxidants and desiccation. The gene dr1790 of D. radiodurans was predicted to encode a yellow-related protein. The primary objective of the present study was to characterize the biological function of the DR1790 protein, which is a member of the ancient yellow/
Braz. J. Microbiol.. Publicado em: 2015-06
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4. Water potential and viability of seeds of Eugenia (Myrtaceae), a tropical tree species, based upon different levels of drying
The aim of the present work was to study the water potential and viability of Eugenia based upon different levels of drying. The seeds showed high water content at shedding and were sensitive to desiccation; however, the level of this sensitivity (water content) varied among the species. Five target drying levels were defined according to the critical levels
Brazilian Archives of Biology and Technology. Publicado em: 2012-08
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5. Protein expression upon desiccation and imbibition of Magnolia ovata A. St.-Hil seeds
The effect of seed drying and imbibition was studied by differential protein expression using two dimensional gel electrophoresis. After drying to a range of water contents, seeds were germinated to assess the viability. Seeds of Magnolia ovata did not withstand the desiccation down to 0.10 g H2O · g-1 dw. The critical water content below which the desiccat
Brazilian Archives of Biology and Technology. Publicado em: 2011-06
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6. Sensitivity of seed to desiccation in cupuassu (Theobroma grandiflorum (Willd. ex Spreng.) K. Schum. - Sterculiaceae.
Quantificar a influência dos sistemas preparo convencional e plantio direto na resposta das plantas da cultura de milho à resistência mecânica e aeração do solo.
Scientia Agricola. Publicado em: 2011
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7. Estrutura e riqueza de hepáticas (Marchantiophyta) epifíticas em áreas fragmentadas de Cerrado com borda natural e antrópica / Estrutura e riqueza de hepáticas (Marchantiophyta) epifíticas em áreas fragmentadas de Cerrado com borda natural e antrópica / Structure and richness of the epiphytic liverworts (Marchantiophyta) in fragmented areas of Cerrado with natural edge and anthropogenic / Structure and richness of the epiphytic liverworts (Marchantiophyta) in fragmented areas of Cerrado with natural edge and anthropogenic
The damage caused by the proliferation of edge in forest cover, referred to as edge effects are extensive, may occur over large spatial scales influencing species composition, structure and ecological processes in boundaries of ecosystems. However, studies have shown highly variable response patterns of the taxonomic group studied in relation to the landscap
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/06/2010
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8. Reserve carbohydrates and lipids from the seeds of four tropical tree species with different sensitivity to desiccation
Os compostos de reserva das sementes, além de suprirem energia para o desenvolvimento embrionário, desempenham importantes funções relacionadas à proteção celular contra secagem e congelamento. Considerando a importância do teor de água para a conservação e para o armazenamento de sementes de espécies arbóreas e o envolvimento dos carboidratos s
Brazilian Archives of Biology and Technology. Publicado em: 2010-08
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9. Perda da tolerÃncia à dessecaÃÃo em sementes de Peltophorum dubium durante e apÃs a germinaÃÃo / Loss of desiccation tolerance during and after germination in Peltophorum dubium seeds
Hà carÃncia de informaÃÃes para subsidiar planos e aÃÃes de conservaÃÃo da diversidade biolÃgica. Sementes tolerantes à dessecaÃÃo (ortodoxas) podem ser armazenadas a longo prazo sem apresentarem queda significativa da viabilidade. Por outro lado, sementes recalcitrantes, sensÃveis à dessecaÃÃo, devem ser armazenadas Ãmidas, conseqÃentement
Publicado em: 2009
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10. Desiccation tolerance and sensitivity in Medicago truncatula and Inga vera seeds
Orthodox seeds acquire desiccation tolerance (DT) during their development which enables them to pass through the phase of maturation drying by the end of their development and enter a state of quiescence. After harvesting, these seeds can be dried further and stored for the long-term without significant loss of viability. On the other hand, there are many s
Publicado em: 2006
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11. ConservaÃÃo de sementes de espÃcieis dos gÃneros Nectandra, Ocotea e Persea (Lauraceae) / Conservation of species seeds of Nectandra, Ocotea and Persea generos (LAURACEAE).
This study aimed to investigate the seed storage behavior, the effect of the fruits coloration and storage (5C, 60%RH) on seed viability, and to adapt the X ray method to verify alterations in the internal morfology and their effects on the seed quality of the species of Lauraceae which grow in the south of Minas Gerais State, Brazil. Seeds of Nectan
Publicado em: 2006
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12. Rate of Dehydration and Cumulative Desiccation Stress Interacted to Modulate Desiccation Tolerance of Recalcitrant Cocoa and Ginkgo Embryonic Tissues1
Rate of dehydration greatly affects desiccation tolerance of recalcitrant seeds. This effect is presumably related to two different stress vectors: direct mechanical or physical stress because of the loss of water and physicochemical damage of tissues as a result of metabolic alterations during drying. The present study proposed a new theoretic approach to r
American Society of Plant Physiologists.