Search
Now showing items 1-10 of 16
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 ...
Response of Endogenous Hormone Concentrations to Two Floral Inductive Treatments, viz. KNO3 and PBZ, in Mango cv. ‘Tommy Atkins’ Growing Under Tropical Conditions
(2012-07-20)
Floral induction (FI) has been intensively studied in mango, more under sub-tropical than under tropical environments. Decreases in temperature below 20 °C, which is common in sub-tropical regions but seldom occurs in many ...
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 ...
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 ...
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 ...
Propagación in vitro de Phalaenopsis (Orchidaceae) mediante el cultivo de secciones de ejes florales después de la senescencia de las flores
Propagation of Phalaenopsis (Orchidaceae) through in vitro culture of nodal sections from senescent flower stalks
(1996-01-01)
Segmentos nodales provenientes de inflorescencias senescentes de híbridos de Phalaenopsis fueron desinfectados dos veces y colocados en un medio sólido MS modificado bajo en calcio y con varios aditivos orgánicos (vitaminas, ...
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 ...
In vitro propagation of the neotropical giant bamboo, Guadua angustifolia Kunth, through axillary shoot proliferation
(2006)
Guadua angustifolia Kunth was successfully propagated in vitro from axillary buds. Culture initiation, bud sprouting, shoot and plant multiplication, rooting and acclimatization, were evaluated. Best results were obtained ...
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 ...
Caracterización anatómica ultraestructural de las variantes “Atlántica”, “Sur” y “Cebolla” del bambú, Guadua angustifolia (Poaceae: Bambusoideae), en Costa Rica
(2006-08-20)
We present an ultrastructural characterization of three variants or “forms” of Guadua angustifolia
and of the closely related Guadua sp., from Costa Rican populations. Their ultrastructure is similar. Differences are: ...