Orthodox Seeds
Mostrando 1-9 de 9 artigos, teses e dissertações.
-
1. Storage and in vitro germination of orchids (Orchidaceae) seeds from Atlantic Forest – Brazil
Abstract: The orchid seed banks of Atlantic Forest may be considered a key strategy for the conservation of species threatened with extinction by indiscriminate collection or habitat destruction. The aim of this study was to evaluate the seed viability, to choose the best culture medium for the asymbiotic germination and evaluate germination, after storage f
An. Acad. Bras. Ciênc.. Publicado em: 16/09/2019
-
2. MODELING OF THE KINETICS OF CRYOGENIC FREEZING OF LIMA BEAN SEEDS AS A FUNCTION OF INITIAL WATER CONTENT
ABSTRACT Cryopreservation is a technique used to preserve genetic material at ultra-low temperatures in cryogenic germplasm banks. In order to enable the cryopreservation of a seed, it is necessary to study its appropriate freezing temperature and its water content, because seeds reach maximum physiological quality with high water contents, and they tolerate
Eng. Agríc.. Publicado em: 19/06/2019
-
3. 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
-
4. Comportamento fisiológico de sementes de aroeira (Myracrodruon urundeuva Fr. All.) em condições de armazenamento.
2000
Boletim de Pesquisa Florestal. Publicado em: 2011
-
5. ARMAZENAMENTO DE SEMENTES DE CUBIU (Solanum sessiliflorum Dunal): INFLUÊNCIA DA EMBALAGEM, DO GRAU DE UMIDADE E DA TEMPERATURA
Este trabalho teve como objetivo avaliar a germinação e o vigor de sementes de Solanum sessiliflorum, submetidas a diferentes condições de armazenamento (tipos de embalagem, graus de umidade e temperaturas). O estudo foi desenvolvido em dois ensaios independentes, realizados no Laboratório de Sementes e no Viveiro de Germinação da Coordenação de Pes
Publicado em: 2007
-
6. Estudo da qualidade fisiolÃgica, bioquÃmica e ultra-estrutural durante o desenvolvimento e a secagem de sementes de soja / Physiological, biochemical and ultra structural studies during the development and drying of soybean seeds
During the development and drying, several protection mechanisms act on the maintenance of the physiological quality of the seeds. Studies on desiccation tolerance allow the understanding of the events associated with the maturation of orthodox seeds, such as soybean. Among the mechanism involved on desiccation tolerance, the activity of heat-resistant prote
Publicado em: 2006
-
7. 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
-
8. Equações de viabilidade para sementes de Eucalyptus grandis W.Hill ex Maiden e Pinus taeda L
The knowledge of seed performance under storage conditions is extremely important to determine its storability potential. The main aim of this work was determine the best methodology to achieve the survival and preservation of Eucalyptus grandis W.Hill ex Maiden and Pinus taeda L. seeds, under controlled storage conditions, through the detection of the viabi
Publicado em: 2004
-
9. Purification and in vitro chaperone activity of a class I small heat-shock protein abundant in recalcitrant chestnut seeds.
A 20-kD protein has been purified from cotyledons of recalcitrant (desiccation-sensitive) chestnut (Castanea sativa) seeds, where it accumulates at levels comparable to those of major seed storage proteins. This protein, termed Cs smHSP 1, forms homododecameric complexes under nondenaturing conditions and appears to be homologous to cytosolic class I small h