Listar Agronomía por autor "Bangerth, Fritz K."
Mostrando ítems 1-12 de 12
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Changes in hormone concentrations during dormancy release of oil palm (Elaeis guineensis) seeds
Jiménez García, Víctor; Guevara Berger, Eric; Herrera Quirós, Jorge; Alizaga López, Ramiro; Bangerth, Fritz K. (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 ... -
Effect of hydrogen cyanamide on the endogenous hormonal content of pea seedlings (Pisum sativum L.)
Guevara Berger, Eric; Jiménez García, Víctor; Herrera Quirós, Jorge; Bangerth, Fritz K. (2008)Hydrogen cyanamide (HC) has been used to break bud and seed dormancy and to improve rooting in several species, responses usually associated with the action of plant hormones. However, very few studies have measured ... -
Endogenous hormonal status of embryogenic callus in cocos (Cocos nucifera L.) explants
Pfenning, Judit; Ebert, Andreas W.; Jiménez García, Víctor; Bangerth, Fritz K. (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 ... -
Endogenous hormonal status of embryogenic callus in cocos (Cocos nucifera L.) explants
Pfenning, Judit; Ebert, Andreas W.; Jiménez García, Víctor; Bangerth, Fritz K. (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 ... -
Endogenous hormone concentrations and embryogenic callus development in wheat
Jiménez García, Víctor; Bangerth, Fritz K. (2001-10)Immature zygotic embryos of two wheat (Triticum aestivum L.) genotypes, known for their different ability to generate embryogenic callus, were used as initial explants to establish callus cultures. Embryogenic and ... -
Endogenous hormone levels in explants and in embryogenic and non-embryogenic cultures of carrot
Jiménez García, Víctor; Bangerth, Fritz K. (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 ... -
Endogenous hormone levels in habituated nucellar Citrus callus during the initial stages of regeneration
Jiménez García, Víctor; Guevara Berger, Eric; Herrera Quirós, Jorge; Bangerth, Fritz K. (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 ... -
Evolution of endogenous hormone concentration in embryogenic cultures of carrot during early expression of somatic embryogenesis
Jiménez García, Víctor; Guevara Berger, Eric; Herrera Quirós, Jorge; Bangerth, Fritz K. (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 ... -
Hormonal status of maize initial explants and of the embryogenic and non-embryogenic callus cultures derived from them as related to morphogenesis in vitro
Jiménez García, Víctor; Bangerth, Fritz K. (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 ... -
In vitro culture and endogenous hormone levels in immature zygotic embryos, endosperm and callus cultures of normal and high-lysine barley genotypes
Jiménez García, Víctor; Bangerth, Fritz K. (2001)Endogenous hormone levels viz. indole-3-acetic acid (IAA), abscisic acid, gibberellins 1, 3 and 20 (GAs), zcatin/zeatin riboside and N6(Δ2-isopentenyl) adenine/ N6(Δ2-i sopentenyl) adenosine were determined in immature ... -
Relationship between endogenous hormone levels of grapevine callus cultures and their morphogenetic behaviour
Jiménez García, Víctor; Bangerth, Fritz K. (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 ... -
Response of Endogenous Hormone Concentrations to Two Floral Inductive Treatments, viz. KNO3 and PBZ, in Mango cv. ‘Tommy Atkins’ Growing Under Tropical Conditions
Guevara Berger, Eric; Jiménez García, Víctor; Bangerth, Fritz K. (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 ...