Agronomía
Envíos recientes
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Identificación y selección de híbridos somáticos obtenidos mediantefusión de protoplastos
(2009)El poder seleccionar eficientemente las plantas híbridas producidas a partir de fusión de protoplastos es fundamental. Se han logrado muchos avances en el tema en las últimas décadas. Entre los métodos utilizados para la ... -
Fatty acids and triacylglycerols in the mesocarp and kernel oils of maturing Costa Rican Acrocomia aculeata fruits
(2019-03)Total lipids, fatty acids, and triacylglycerols in mesocarp and kernels from Costa Rican Acrocomia aculeata fruits were characterized at three maturity stages. C16:0 and C18:1n9 were the most abundant fatty acids in the ... -
Endogenous hormone levels in explants and in embryogenic and non-embryogenic cultures of carrot
(2001)Carrot (Daucus carota L. F1 hybrid Starca) excised hypocotyls were cultured on Murashige and Skoog medium with and without 2,4‐dichlorophenoxy acetic acid (2,4‐D) to determine the effect of this plant growth regulator on ... -
Hormonal status of maize initial explants and of the embryogenic and non-embryogenic callus cultures derived from them as related to morphogenesis in vitro
(2001)Endogenous hormone levels (indole-3-acetic acid [IAA], abscisic acid [ABA], gibberellins 1, 3 and 20 [GAs], zeatin/zeatin riboside [Z/ZR] and N6[Δ2-isopentenyl] adenine/N6[Δ2-isopentenyl] adenosine; [iP/iPA]) were analysed ... -
Relationship between endogenous hormone levels of grapevine callus cultures and their morphogenetic behaviour
(2000-01-01)Dark callus cultures from leaves and anthers of three grapevine genotypes (Seyval blanc, Riesling and Trollinger) were propagated in vitro for almost two years on medium deprived of growth regulators. Three different callus ... -
Endogenous hormonal status of embryogenic callus in cocos (Cocos nucifera L.) explants
(1997-01-01)Endogenous hormonal concentrations of Z/ZR, IP/IPA, ABA and free IAA were determined in Cocos in vitro cultures during the period of embryogenic callus (calloid) formation and in selected tissues after 16 weeks grown on ... -
Propagación in vitro de Phalaenopsis (Orchidaceae) mediante el cultivo de secciones de ejes florales después de la senescencia de las flores
(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, ... -
Endogenous hormonal status of embryogenic callus in cocos (Cocos nucifera L.) explants
(1996-01-01)The application of optimum concentrations of hormones according to specific culture stages plays an important role, especially in plants which are concerned lo be recalcitrant for propagation in vitro, like Cocos nucifera ... -
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 ... -
La ultraestructura de la superficie foliar de cultivares de maíz infectados con el virus del rayado fino
(1980-10)The ultrastructural alterations induced by rayado fino in the foliar lamina of infected maize plants vary with plant genotype. The chlorotic spots or short stripes, typical of the macroscopic disease symptom, do not ... -
Una doble infección viral en orquídeas del género Cymbidium
(1986)A double -viral infection in Cymbidium hybrids is described. Virions were discovered by negative staining of sick plant sap, which showed a rigid type and a flexible virus. Two types of viral-cytoplasmatic inclusions, ... -
Tecnologías para el control biológico de plagas que afectan la piña
(2019-05-01)Resumen del informe de vigilancia tecnológica sobre tecnologías sostenibles para el cultivo de la piña -
Efecto de la adición de pollinaza sobre las características nutricionales y fermentativas del ensilado de subproductos agroindustriales de yuca (Manihot esculenta)
(2015)Se evaluó el efecto de la adición de 0, 5, 10, 15 y 20% de pollinaza al subproducto de yuca en el proceso de ensilaje. Tanto las características de composición nutricional como las fermentativas fueron evaluadas. Se determinó ... -
Phenotype of Arabidopsis thaliana semi-dwarfs with deep roots and high growth rates under water-limiting conditions is independent of the GA5 loss-of-function alleles
(2015-07-10)BACKGROUND AND AIMS: The occurrence of Arabidopsis thaliana semi-dwarf accessions carrying inactive alleles at the gibberellin (GA) biosynthesis GA5 locus has raised the question whether there are pleiotropic effects on ...
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