Buried Seeds
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Disentangling plant establishment in sandy coastal systems: biotic and abiotic factors that determine Allagoptera arenaria (Arecaceae) germination
ABSTRACT Germination rate and establishment success of plants in harsh environments depend on the ability of seeds to withstand unfavorable environmental conditions and avoid predators. Brazilian coastal plains, known as restinga, are subject to environmental factors that seriously limit plant establishment and survival (e.g. salinity, desiccation, oligotrop
Acta Bot. Bras.. Publicado em: 19/10/2017
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2. Dispersión de semillas de Mauritia flexuosa (Arecaceae) por frugívoros terrestres en Laguna Azul, Beni, Bolivia
Scatterhoarding has received special attention for the last couple of decades, and several studies focused on palms whose seeds are dispersed by Dasyprocta. Our objective was to know the species that consume fruits of Mauritia flexuosa, to evaluate the relative importance of consumer species, and also to assess the fate of dispersed seeds. Using field experi
Acta Amaz.. Publicado em: 2015-03
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3. Seed longevity of Eragrostis plana Nees buried in natural grassland soil
The objective of this research was to evaluate the seed longevity of Eragrostis plana Nees buried at different soil depths, in a natural-grassland area in the Pampa biome (46 m altitude, 30º05´S and 51º40´W) of Rio Grande do Sul State, Brazil. The experimental design was a split-plot type in complete blocks with two factors: seeds buried at five differen
R. Bras. Zootec.. Publicado em: 2014-11
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4. Soil seed bank variation patterns according to environmental factors in a natural grassland
O trabalho objetivou determinar o banco de sementes presente em uma área excluída de campo natural localizado na região sul do Brasil e sua correspondência com fatores abióticos que possuem influência no desenvolvimento e distribuição da vegetação presente. Foram identificadas 122 espécies, sendo a maioria perenes. Observou-se uma nítida separaç
Publicado em: 2010
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5. Banco de sementes do solo em área agrícola sob diferentes sistemas de manejo estabelecida sobre campo natural / Soil seed bank in cropland under different management systems established in natural grassland
O conhecimento da ecologia de bancos de sementes do solo (BSS) contribui para a proposição de técnicas de manejo dos BSS de plantas espontâneas em lavouras estabelecidas sobre campo nativo. O objetivo deste trabalho foi verificar o efeito de sistemas de cultivo, estabelecidos há três anos sobre campo nativo (Depressão Central do RS, 30º05´S, 51º40�
Publicado em: 2010
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6. Influência de sistemas de rotação de sementes de gramíneas forrageiras temperadas na composição do banco de sementes invasoras no solo / Influence of temperate grass seed rotation systems on weed seed soil bank composition
Em consequência da mudança nas práticas agronômicas nos cultivos de gramíneas perenes para sementes no oeste de Oregon, EUA, sistemas alternativos de rotação estão sendo considerados com a finalidade de reduzir a infestação de plantas invasoras. De um modo geral, inexistem informações dos efeitos de práticas agronômicas alternativas e aplicaç�
Publicado em: 2010
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7. Expressão heteróloga e caracterização bioquímica da proteína recombinante GmSBP2/S64 da soja (Glycine max) / Heterologous expression and biochemical characterization of GmSBP2/S64 recombinant protein from soybean (Glycine max)
The sucrose binding protein (SBP) belongs to the cupin family of proteins and is structurally related to vicilin-like storage proteins. In this investigation, SBP was expressed in E. coli and large amounts of the protein accumulated in the insoluble fraction as aggregated, denatured protein. The refolding of the purified protein proceeded with a progressive
Publicado em: 2006
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8. Dinâmica do banco de sementes do solo em ecossistema campestre sob utilização agropecuária com soja e azevem anual / Soil seed bank dynamic in fields with soybean and annual ryegrass
O presente trabalho de tese conta com três artigos.
Publicado em: 2005
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9. Crystallographic structure of the trypsin inhibitor purified from Enterolobium contortisiliquum seeds and the molecular modeling of its complexes with trypsin, trombin and Xa factor. / Estrutura cristalográfica do inibidor de tripsina purificada de sementes de Enterolobium contortisiloquum e modelagem molecular de seus complexos com tripsina, trombina e fator Xa.
The principal objective of this work was the 3D structural determination of a Trypsin inhibitor from Enterolobium contortisiliquum (EcTI) seeds as well as the modeling of the complexes between EcTI and trypsin, chymotrypsin, thrombin and factor Xa and their subsequent analysis. The inhibitor has a molecular weight of 19.5 kDa and inhibits trypsin, chymotryps
Publicado em: 2003
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10. Bancos de sementes do solo da reserva biologica e estação experimental de Moji Guaçu, em area de cerrado no estado de São Paulo
In spite of have been initially considered an exceptional condition, sexual reproduction of cerrado plants is now accepted as a common fact, as mentioned by several authors working in field and laboratory conditions. Nevertheless, the composition and dynamics of cerrado soil seed banks remain to be understood. This study intends to investigate the soil seed
Publicado em: 2002
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11. Volatile Metabolites Controlling Germination in Buried Weed Seeds
Velvetleaf (Abutilon theophrasti Medic), morning glory (Ipomoea purpurea [L.] Roth), and wild mustard (Brassica kaber [D.C.] L. C. Wheeler) seeds exhibited decreased germination with increased planting depth in soil. Flushing the soil for 2 minutes each day with air overcame the inhibition. A sealed in vitro system was used to sample the volatile components
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12. Patterns of Protein Oxidation in Arabidopsis Seeds and during Germination1[w]
Increased cellular levels of reactive oxygen species are known to occur during seed development and germination, but the consequences in terms of protein degradation are poorly characterized. In this work, protein carbonylation, which is an irreversible oxidation process leading to a loss of function of the modified proteins, has been analyzed by a proteomic
American Society of Plant Biologists.