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Mostrando 13-24 de 34 artigos, teses e dissertações.
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13. Comportamento de variedades e híbridos de bananeira (Musa spp.), em dois ciclos de produção no sudoeste da Bahia
O objetivo deste trabalho foi caracterizar e avaliar o comportamento de 13 genótipos (variedades e híbridos) de bananeira dos grupos genômicos AAA, AAAA, AAB e AAAB, em dois ciclos de produção, no sudoeste da Bahia, região de Guanambi, mediante o uso de descritores fenotípicos relevantes para a identificação e seleção de indivíduos superiores. Fo
Revista Brasileira de Fruticultura. Publicado em: 2006-04
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14. Correlações entre caracteres da planta e do cacho em bananeira (Musa spp)
Os caracteres observados em áreas experimentais têm natureza fenotípica e suas correlações são estimadas visando mensurar alterações em um caráter quando se altera outro relacionado. Objetivou-se com este trabalho, quantificar a relação entre os caracteres da planta e do cacho observados na época do florescimento e da colheita de 13 genótipos (v
Ciência e Agrotecnologia. Publicado em: 2006-02
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15. CaracterizaÃÃo molecular e morfo-agronÃmica de germoplasma de aÃaizeiro / Molecular and morphoagronomical characterization of aÃai palm germplasm.
The objective of this research was to characterize the genetic and phenotypic diversities in aÃai palm (Euterpe oleracea) germplasm sampled in the Embrapa Eastern Amazon collection, through molecular markers and morphoagronomical traits. There were characterized 116 accessions from 26 origins by 28 RAPD and seven SSR primers. The 28 morphoagronomical traits
Publicado em: 2005
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16. Suscetibilidade à queda natural e caracterização dos frutos de diversos genótipos de bananeiras
A queda natural de frutos maduros da bananeira, resultado da separação individual de frutos da coroa da penca, também chamada despencamento, é uma característica indesejável, que pode limitar o lançamento de uma nova cultivar. O fruto destacado da penca tem vida de prateleira reduzida, além de não demonstrar boa aparência aos olhos do consumidor. O
Revista Brasileira de Fruticultura. Publicado em: 2004-12
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17. Niveis dos receptores soluveis de transferrina e graus de maturidade dos reticulocitos na talassemia alfa+
Background and Objective. It has been suggested that an increased number of young circulating red blood cells (RBC) in a+-thalassemic children could be related to the high frequencies of the a+-thalassemic allele in malaria endemic areas. Reticulocyte (RET) evaluation in this condition, however, has not been performed so far. Our objective was to determine t
Publicado em: 2004
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18. CaracterizaÃÃo e avaliaÃÃo da qualidade de polpas de aÃaà industrializadas e perfil de Ãcidos graxos do fruto do aÃaizeiro
O aÃaizeiro (Euterpe oleracea Mart.) à uma planta nativa da regiÃo AmazÃnica no qual se extrai o âvinho de aÃaÃâ, produto que tem despertando interesse por seu potencial energÃtico, especialmente por praticantes de atividade fÃsica. A fim de avaliar a qualidade nutricional e microbiolÃgica, foram analisadas sete marcas de polpas de aÃaà comercia
Publicado em: 2003
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19. Conformational analysis of oligoarabinonucleotides. An NMR and CD study.
A 500 and 300 MHz proton NMR study of the series of oligoarabinonucleotides 5'aAMP, 3'aAMP, aA-aA, (aA-)2aA and (aA-)3aA is presented. In addition, circular dichroism is used to study the stacking behaviour of aA-aA. The complete 1H-NMR spectral assignment of the compounds (except the tetramer) is given. Proton-proton and proton-phosphorus coupling constants
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20. DNA sequence preferences of several AT-selective minor groove binding ligands.
We have examined the interaction of distamycin, netropsin, Hoechst 33258 and berenil, which are AT-selective minor groove-binding ligands, with synthetic DNA fragments containing different arrangements of AT base pairs by DNase I footprinting. For fragments which contain multiple blocks of (A/T)4 quantitative DNase I footprinting reveals that AATT and AAAA a
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21. Synthesis of cyclic oligonucleotides by a modified phosphotriester approach.
Evidence will be presented to show that the allyl group is suitable for the protection of a 3'-terminal phosphodiester function. The latter will be demonstrated by the synthesis, via a phosphotriester approach, of two cyclic tetraribonucleotides [r(AAAA) and r(UAMe2UAMe2)], two cyclic hexadeoxyribonucleotides [d(CGCGCG) and d(TAAAAA)] and a cyclic octadeoxyr
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22. Isolation of Monosomics in Yeast
Tetraploid cultures of Saccharomyces cerevisiae triplex (A/A/A/a) at several loci were sporulated. All the diploid spores are expected to be homozygous (A/A) or heterozygous (A/a) and, hence, to have the dominant phenotype. Cells lacking one of the chromosomes (monosomics) may show the recessive phenotype (a/−). Therefore, spores that grew on complete medi
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23. Molecular structure of nicked DNA: a substrate for DNA repair enzymes.
The molecular structure of a nicked dodecamer DNA double helix, made of a ternary system containing d(CGCGAAAACGCG) + d(CGCGTT) + d(TTCGCG) oligonucleotides, has been determined by x-ray diffraction analysis at 3 A resolution. The molecule adopts a B-DNA conformation, not unlike those found in intact dodecamer DNA molecules crystallized in a somewhat differe
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24. The importance of the A-rich loop in human immunodeficiency virus type 1 reverse transcription and infectivity.
Nucleotide segment (+169)AAAA(+172) constitutes an A-rich loop within human immunodeficiency virus type 1 (HIV-1) (HXB2D) RNA and is able to interact with the anticodon loop (33)/USUU(36) of primer tRNA3(Lys). We have shown that the deletion of this A-rich loop resulted in diminished levels of infectivity and reduced synthesis of viral DNA in MT-2 cells and