Buscar
Mostrando ítems 1-10 de 16
Changes in hormone concentrations during dormancy release of oil palm (Elaeis guineensis) seeds
(2008-10)
Oil palm (Elaeis guineensis) seeds are highly dormant immediately after harvest. In practical horticulture this dormancy has been traditionally overcome by a dry-heat treatment and, more recently, through the application ...
Micropropagación de Guadua angustifolia Kunth a partir de explantes nodales
(2004)
Se evaluó el efecto de diferentes estrategias de desinfección, así como de varias concentraciones de la citoquinina 6-bencilamino purina (BAP) en el medio de cultivo, sobre el establecimiento y desarrollo in vitro de ...
Challenges for Food and Nutrition Security in the Americas: Costa Rica and its commitment to sustainability
(2017-11)
As a small nation with high biodiversity and an extensive system of protected areas, Costa Rica will face particular challenges regarding food security over the next few years. Thus, whatever development model the country ...
Ultraestructura del bambú Guadua angustifolia var. bicolor (Poaceae: Bambusoideae), presente en Costa Rica
(2006-08-20)
Sections of leaf lamina, leaf sheath and branches of adult Guadua paniculata collected in Costa Rica,
were studied ultrastructurally. Diagnostic ultrastructural characteristics include the cellular pattern of the adaxial ...
Effect of macronutrients and sucrose concentration on in vitro growth of Drosera capensis L. (Droseraceae) plants, and evaluation of six substrates for acclimatization
(2011-01)
The effect of two concentrations of the Murashige and Skoog macronutrients (full and half strength), in combination with three concentrations of sucrose (1.5, 3.0 and 4.5% w/v), was evaluated on the in vitro growth of ...
Endogenous hormone levels in habituated nucellar Citrus callus during the initial stages of regeneration
(2001-01)
Embryogenic nucellar callus cultures of different Citrus species and cultivars growing in hormone-free medium were transferred to medium containing either sucrose or glycerol as the only carbohydrate source. Glycerol has ...
Regeneración in vitro mediante embriogénesis somática de variedades de cítricos. I. Obtención de callo friable y suspensiones celulares de naranja dulce (Citrus sinensis) y naranja agria (Citrus aurantium) cultivadas en Costa Rica
(1995-03-31)
In vitro plant regeneration of citrus through somatic embryogenesis. I. Establishment of friable calli and suspension cultures of local cultivars of sweet orange (Citrus sinensis) and sour orange (Citrus aurantium). Friable ...
Ultraestructura del bambú Guadua amplexifolia (Poaceaea: Bambusoideae) presente en Costa Rica
(2006-12)
Se estudió la ultraestructura anatómica de la lámina y la vaina de la hoja, así como de la bráctea del culmo, de Guadua angustifolia var. Bicolor, por medio de los micros-copio electrónico de barrido. Se encontraron ...
Ultraestructura del bambú Guadua macclurei (Poaceae: Bambusoideae) de Costa Rica
(2006-08-20)
Se evaluaron ultraestructuralmente secciones de la lámina de la hoja, vaina de la hoja y rama, de una planta adulta de Guadua macclurei. Las brácteas del culmo carecen de setas orales. En la superficie adaxial de la lámina ...
Evolution of endogenous hormone concentration in embryogenic cultures of carrot during early expression of somatic embryogenesis
(2004-09)
Embryogenic callus and suspension cultures of carrot (Daucus carota L., cv. Nantaise), growing on/in medium including 1 mg/l 2,4-dichlorophenoxy acetic acid (2,4-D), were transferred to medium with or without this plant ...