Seedings
Mostrando 1-12 de 21 artigos, teses e dissertações.
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1. MINI-CUTTINGS TECHNIQUE FOR VEGETATIVE PROPAGATION OF Dalbergia nigra
ABSTRACT The usual propagation method for Dalbergia nigra is via seedings; however, the seasonal supply has a variable quantity of seeds which limits the continuous production of seedlings. Therefore, the objective of this study was to establish a vegetative propagation protocol via mini-cuttings technique for D. nigra from juvenile shoots obtained from seed
CERNE. Publicado em: 2020-12
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2. Coordenação temporal da relação fonte dreno em plântulas de jatobá (Hymenaea courbaril L.) / Temporal coordination of the source sink relationship in jatobá seedings (Hymenaea courbaryl L.)
As plântulas de jatobá apresentam grandes quantidades de reserva de carbono, na forma de polissacarídeos constituintes de parede, presentes em seus cotilédones. Estas reservas são inicialmente utilizadas para expansão dos eófilos. Após esta fase, as plântulas passam a dispor de duas fontes de carbono, sendo elas, as reservas (que ainda não se esgot
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/01/2012
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3. Transferência de tecnologia para a produção de mudas sadias de pimenteira-do-reino na Transamazônica, em viveiros comunitários.
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Belém. Publicado em: 2011
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4. Desenvolvimento e produtividade do cafeeiro consorciado com espécies florestais.
RESUMO: Este trabalho objetivou avaliar o comportamento da cultivares de cafeeiro Acaiá Cerrado e Catuaí Rubí em quatro sistemas agroflorestais: monocultivo e consorciados com seringueira, mogno e neem, as espécies florestais também foram plantadas em monocultivo. O experimento foi instalado no campo experimental da Embrapa Cerrados, em Planaltina, DF,
Planaltina. Publicado em: 2011
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5. Sistema de irrigação por capilaridade na produção de porta-enxertos de mudas citricas na fase de sementeira / Irrigation system by capillary action in the citrus rootstocks production in seedings stage
The water and nutrition management in the production of citrus rootstocks in the seedling phase performed by sprinkler systems, manually operated, presents the environmental outcome of water or residual solution disposal from the fertigation. The generated wastewater is generally discarded directly in the soil with the risk to reach the groundwater and conta
Publicado em: 2010
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6. Relação entre raiz e parte aerea de plantulas de especies arboreas tropicais sob diferentes niveis de radiação solar / Relation between root and aerial part of seedings of tropical trees species under different levels of irradiance
O crescimento de plântulas de espécies arbóreas tropicais, em ambientes com disponibilidade luminosa contrastante, depende de interações entre características morfológicas e fisiológicas. Dentre as várias alterações morfológicas que ocorrem em condições de baixa irradiância, uma é a razão de crescimento entre a raiz e a parte aérea. A razã
Publicado em: 2007
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7. The Aggregation States of Phytochrome from Etiolated Rye and Oat Seedings
Initial extracts from etiolated plants contained two aggregates of phytochrome. A major fraction was almost excluded by Sephadex G-200 and was within the fractionation range of Sepharose 4 B. A minor fraction was within the fractionation range of Sephadex G-200. Modifications of a previous isolation procedure which allowed retention of this aggregation state
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8. Evidence for the Regulation of Phytochrome-mediated Processes in Bean Roots by the Neurohumor, Acetylcholine 1
Using pharmacological and chromatographic techniques, it was shown that acetylcholine was present in all organs of both light- and dark-grown mung bean seedings (Phaseolus aureus). The highest concentrations were found in tissues containing active growing points: buds and secondary roots. Within 4 minutes, red light caused an increase in the efflux of acetyl
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9. Annual Variation in the Sterol Content of Digitalis purpurea L. Seedlings 1
Seedings from a single lot of Digitalis purpurea L. seeds were germinated in batches over a period of 13 months. A total lipid extract was made which was resolved into esterified and unconjugated plus glycosylated sterol fractions. The amounts of sterol in each fraction and in the total were compared for seedlings germinated at different times of the year. T
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10. The CaMV 35S enhancer contains at least two domains which can confer different developmental and tissue-specific expression patterns
We have analyzed expression conferred by two domains from the cauliflower mosaic virus (CaMV) 35S promoter and found different patterns in seeds, seedlings and seven week old plants. Expression from domain A (-90 to +8) is strongest in the radicle of the embryo, the radicle pole of the endosperm and in root tissue of seedlings and mature plants. Expression f
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11. Effects of Calcium and Kinetin on Growth and Cell Wall Composition of Pea Epicotyls
Kinetin and CaCl2, in the presence of indoleacetic acid, promoted lateral expansion of epicotyls of decapitated and derooted Alaska pea seedlings (Pisum sativum L.) and inhibited their elongation. This growth response was correlated with the development of cell walls unusually rich in pectic uronic acids. Epicotyls in calcium-auxin solutions continued to enl
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12. Interaction between Light Intensity and NaCl Salinity and Their Effects on Growth, CO2 Assimilation, and Photosynthate Conversion in Young Broad Beans
Seedings of Vicia faba were grown for four weeks at two different light intensities (55 and 105 watts per square meter) in a saline (50 millimolar NaCl) and nonsaline nutrient solution. NaCl salinity depressed growth and restricted protein formation, CO2 assimilation, and especially the incorporation of photosynthates into the lipid fraction. Conversion of p