Listar Agronomía por autor "c4446754-8301-48fe-af11-dcd552a20795"
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50 aniversario del Centro para Investigaciones en Granos y Semillas (CIGRAS): Historia y aportes en investigación, docencia y acción social.
Viñas Meneses, María; Jiménez García, Víctor; Barboza Barquero, Luis Orlando (2022-09)El Centro para Investigaciones en Granos y Semillas (CIGRAS) es un centro de investigación adscrito a la Vicerrectoría de Investigación de la Universidad de Costa Rica y vinculado a la Facultad de Ciencias ... -
Acrocomia aculeata fruits from three regions in Costa Rica: an assessment of biometric parameters, oil content and oil fatty acid composition to evaluate industrial potential
Alfaro Solís, Jose David; Montoya Arroyo, Alexander; Jiménez García, Víctor; Arnáez Serrano, Elizabeth; Pérez Chávez, Jason; Vetter, Walter; Frank, Jan; Lewandowski, Iris (2020)Due to increased global demand for vegetable oils, diversification of the supply chain with sustainable sources is necessary. Acrocomia aculeata has recently gained attention as a multi-purpose, sustainable crop for oil ... -
Biology of the papaya plant
Jiménez García, Víctor; Mora Newcomer, Eric; Gutiérrez Soto, Marco Vinicio (2014-01-01)The papaya plant (Carica papaya L.) has been described with a large variety of adjectives, which acknowledge the structural and functional complexity and the high phenotypic plasticity of this giant tropical herb (León ... -
Caracterización anatómica ultraestructural de las variantes “Atlántica”, “Sur” y “Cebolla” del bambú, Guadua angustifolia (Poaceae: Bambusoideae), en Costa Rica
Montiel Longhi, Mayra; Jiménez García, Víctor; Guevara Berger, Eric (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: ... -
Caracterización histológica y bioquímica del fenómeno de oscurecimiento durante la brotación inicial in vitro de explantes nodales de bambú (Guadua amplexifolia J. Presl.)
Reyes Ferrufino, Ana Carlota (2024)Guadua amplexifolia es una especie de bambú neotropical de importancia económica por las características físico-mecánicas de sus tallos. Si bien hay protocolos para el establecimiento y cultivo in vitro de varias especies ... -
Carotenoids and xanthophyll esters of yellow and red nance fruits (Byrsonima crassifolia (L.) Kunth) from Costa Rica
Irías Mata, Andrea Paola; Jiménez García, Víctor; Steingass, Christof Björn; Schweiggert, Ralf M.; Carle, Reinhold; Esquivel Rodríguez, Patricia (2018-09)Carotenoid profiles, by means of HPLC-PDA-MSn, and CIE-L*C*h° colour values of yellow and red nance fruits from Costa Rica were elucidated. Among 16 carotenoids detected, (all-E)-lutein was the most abundant accounting for ... -
Carotenoids, carotenoid esters, and anthocyanins of yellow-, orange-, and red-peeled cashew apples (Anacardium occidentale L.)
Schweiggert, Ralf M.; Vargas, Ester; Conrad, Jürgen; Hempel, Judith; Gras, Claudia C.; Ziegler, Jochen U.; Mayer, Angelika; Jiménez García, Víctor; Esquivel Rodríguez, Patricia; Carle, Reinhold (2016-06-01)Pigment profiles of yellow-, orange-, and red-peeled cashew (Anacardium occidentale L.) apples were investigated. Among 15 identified carotenoids and carotenoid esters, b-carotene, and b-cryptoxanthin palmitate were the ... -
Challenges for Food and Nutrition Security in the Americas: Costa Rica and its commitment to sustainability
Jiménez García, Víctor; Acuña Gutiérrez, Catalina; Agüero Vargas, Marilín; Alvarado Hernández, Alfredo; Ávila Agüero, María L.; Blanco Vega, Marialis; Dumani Echandi, Marcela; Esquivel Rodríguez, Patricia; Gatica Arias, Andrés Mauricio; Guevara Berger, Eric; Hernández Pridybailo, Andrés; Hernández Cordero, Raquel; Holst Sanjuán, Andrea; Madriz Morales, Karol; Mata Segreda, Julio Francisco; Quirós Madrigal, Olman José; Radulovich Ramírez, Ricardo; Salas Chaves, Álvaro; Solórzano Cascante, Paúl (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 ... -
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 ... -
Deposition Form and Bioaccessibility of Keto-carotenoids from Mamey Sapote (Pouteria sapota), Red Bell Pepper (Capsicum annuum), and Sockeye Salmon (Oncorhynchus nerka) Filet
Chacon Ordónez, Tania; Esquivel Rodríguez, Patricia; Jiménez García, Víctor; Carle, Reinhold; Schweiggert, Ralf M. (2016-02-18)The ultrastructure and carotenoid-bearing structures of mamey sapote (Pouteria sapota) chromoplasts were elucidated using light and transmission electron microscopy and compared to carotenoid deposition forms in red bell ... -
Desarrollo de cápsulas y germinación in vitro de Phragmipedium humboldtii, P. longifolium y P. percei
Muñoz García, Melania Nelly; Jiménez García, Víctor (2007-06)Slipper orchids belonging to the genus Phragmipedium (subfam. Cypripedioideae) are seriously threatened and therefore listed in Appendix I of CITES. Less research has been conducted in this genus than in others belonging ... -
Direct and indirect in vitro regeneration of Vanilla odorata C. Presl. and V. pompona Schiede, two aromatic species with potential relevance for future vanillin production
Warner Pineda, Jorge; Camacho Solís, Yesly; Jiménez García, Víctor (2023-10-11)Direct and indirect shoot regeneration in Vanilla odorata and indirect for V. pompona are described for the first time. Both species produce fragrant, vanillin-containing seed pods and are closely related to the commercially ... -
Effect of foliar applications of phosphites on growth, nutritional status and defense responses in tomato plants
Viñas Meneses, María; Méndez Fernández, Juan Carlos; Jiménez García, Víctor (2020)The use of phosphite (Phi)-containing products as foliar fertilizers is a common practice in food production systems, yet their actual contribution as a source of phosphorus (P) for plant nutrition has been object of debate. ... -
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 ... -
Effect of macronutrients and sucrose concentration on in vitro growth of Drosera capensis L. (Droseraceae) plants, and evaluation of six substrates for acclimatization
Jiménez García, Víctor; Guevara Berger, Eric; Masís, Silvia (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 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 ...