Variation in seed production of Jatropha curcas L. accessions under tropical dry forest conditions in Ecuador

Cañadas-López, Álvaro; Rade-Loor, Diana; Domínguez-Andrade, Juan Manuel; Hernández, J. Jesús Vargas; Hidrovo, Carlos Alberto Molina; Macías-Loor, Carlos; Wehenkel, Christian

doi:10.1007/s11056-017-9597-1

Cited by 8 publications

(18 citation statements)

References 36 publications

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“…Un análisis de sensibilidad fue conducido. La tasa de interés se expresa en dólares nominales, de ahí que para convertir los beneficios futuros y los costos nominales a dólares reales se empleó la siguiente fórmula: and Piñón pure plantations, using the accession of Piñón INIAP CP041 with the purpose of recording the production of dry seeds (17). As a reference for the Piñón/Saboy silvopastoral systems, 10 sites were established (Quimis, Junín, Calceta, Boyacá, Danzarín, Tosagua, San Roque, Chone, Santa Ana and Lodana).…”

Section: Methodsunclassified

“…In the province of Manabí, Ecuador registered the second highest value per Piñón seed of zero point twenty-two-dollar kg -1 (17). About 4 kg of Piñón seeds are required to obtain a liter of oil (17). These results suggest that, the Piñón seeds price paid is often stablished in such way that, the price set for famers is referenced to fossil diesel prices.…”

Section: Viabilidad Económica De Sistemas Silvopastorilmentioning

confidence: 99%

“…P r o d u c c i ó n d e l P i ñ ó n e n s i s t e m a s silvopastoriles. Desde junio del 2009 se han establecidos cercas vivas en praderas de pasto Saboya (Megathyrsus maximus), utilizando la de accesión de INIAP Piñón CP041 con la finalidad de registrar la producción de semillas secas (17). Como referencia de la producción de los sistemas silvopastoriles Piñón/Saboya se establecieron 10 sitios (Quimis, Junín, Calceta, Boyacá, Dazarín, Tosagua, San Roque, Chone, Santa Ana y Lodana).…”

Section: Materiales Y Métodosunclassified

Section: Viabilidad Económica De Sistemas Silvopastorilmentioning

confidence: 99%

“…Hence, the propagation selection materials are not directed to the oil seed production. Therefore, it is essential in the cattle sustainable development of this province to fill the knowledge gap on the Piñón productivity prospects (17).…”

Section: Introducctionmentioning

confidence: 99%

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Viabilidad económica y financiera de sistemas silvopastoriles con Jatropha curcas L. en Manabí, Ecuador

Cañadas-López

Zambrano

et al. 2017

Rev MVZ Córdoba

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Objetivo. Evaluar la viabilidad económica y financiera de los sistemas silvopastoriles tradicionales para la producción de Biocombustibles como aporte a la sostenibilidad del proyecto “Piñón para Galápagos”. Materiales y Métodos. Se llevaron a cabo encuestas a 450 pequeños productores ganaderos de 10 cantones de la provincia de Manabí con la finalidad de colectar información agronómica, manejo, costos implicados en establecimiento y producción de los sistemas silvopastoriles vigentes de Piñón (Jatropha curcas L.)/Saboya (Megathyrsus maximus). Para recopilar datos de producción del Piñón establecido en cercas vivas de Piñón INIAP CP041 e igualmente se registró la producción de sistemas en 10 sitios, desde el año 2009. Con estos datos se calcularon los siguientes indicadores financieros radio beneficio/costo (B/C), valor actual neto (VAN), tasa interna de retorno (TIR) y valor de expectativa de la tierra (VET). Resultados. El estudio mostró una disminución de la producción del Piñón con el transcurso del tiempo. El sistema silvopastoril mejorado con Piñón INIAP CP041 mostró B/C 1.07, VAN de USD$ 404.11, VET USD$ 970.23 y TIR de 18%. Seguido del sistema silvopastoril con Piñón local con un B/C 1.06, VAN de USD$ 363.66, VET USD$ 873.10 y TIR de 17% y finalmente sistema silvopastoril sin cosecha del Piñón con un B/C 1.05, VAN de USD$ 285.72, VET USD$ 685.99 y TIR de 15%. Conclusiones. La alternativa de producción de biocombustibles con sistemas silvopastoriles Piñón (INIAP CP041)/Saboya en Manabí es el sistema de mayor rentabilidad y no competiría por superficies de cultivo para la producción de alimentos, sin afectar a la seguridad alimentaria.

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Section: Methodsunclassified

Section: Viabilidad Económica De Sistemas Silvopastorilmentioning

confidence: 99%

Section: Materiales Y Métodosunclassified

Section: Viabilidad Económica De Sistemas Silvopastorilmentioning

confidence: 99%

Section: Introducctionmentioning

confidence: 99%

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Viabilidad económica y financiera de sistemas silvopastoriles con Jatropha curcas L. en Manabí, Ecuador

Cañadas-López

Zambrano

et al. 2017

Rev MVZ Córdoba

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Cone structure and seed development in grafted witches’ broom and normal crown clones from the same trees of Pinus sibirica

2019

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Comparison of the alkaloid content and essential oil composition of Mahonia species as measured by HPLC and GC–MS methods

Kong

2018

Braz. J. Bot

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Mahonia is an important genus of the Berberidaceae family. Most species of Mahonia plants are traditional herbal medicines with various active components, and Mahonia is reported to be rich in alkaloids and essential oils. This study aimed to investigate the content of alkaloids and the chemical composition of the essential oils in five Mahonia species. Roots and stems of five Mahonia species showed higher jatrorrhizine, palmatine and berberine. The sum contents of the palmatine and berberine were all far more over 0.8% both in roots and stems of five Mahonia species. The leaves had higher oil yields than the stems of all species. Ethyl linoleate, phytol isomer, 4-terpineol and a-terpineol were the predominant component in both the stem and leaf oils of the five Mahonia species. Cedrol (2.09-4.33%) was abundant compound in the essential oil of five Mahonia species stems. The phytol content in the leaf oil was markedly higher than that measured in the stems. The essential oil composition from these Mahonia species demonstrated strong tissue and organ specificity. The roots and stems could be considered a good source of alkaloids, and the leaves could be considered a good source of essential oils of five Mahonia species. This work benefits the extensive development of this important and widely used medicinal herb. Keywords Chemical components Á Quality evaluation Á Resource utilization Á Chemometrics 1 Introduction Mahonia Nuttall belongs to the Berberidaceae family of evergreen shrubs or small trees. The family Berberidaceae contains nine genera and 590 species native to the northern hemisphere and South America. The genus Mahonia, which is the second largest genus in Berberidaceae, contains approximately 60 species and is native to East and Southeast Asia, Western North America, Central America and Western South America (He and Mu 2015). It has been recorded that approximately 35 species of the Mahonia genus are distributed in China, growing primarily in southwest China, 23 of which are endemic to China (Flora of China Editorial Committee 2001). The roots, stems and leaves of most of Mahonia species have been used as Chinese herbs for a long history (Ji et al. 2000; Liu and He 2010). These herbs are beneficial for clearing heat, dry dampness, dysentery, hepatitis, jaundice, toothache caused by stomach fire, swelling and abscesses because of their rich alkaloid and volatile oil content (Chung et al. 1999; Zeng et al. 2006; Wong et al. 2009). However, only the roots and stems of Mahonia bealei (Fort.) Carr and Mahonia fortunei (Lindl.) Fedde have been widely used as the raw material ''GongLaoMu'' listed in the Chinese Pharmacopoeia (China Pharmacopeia Commission 2010). The dry leaves from M. bealei and M. fortunei have been used as the raw material ''GongLaoYe'' in traditional Chinese medicine (Zhejiang Food and Drug Administration 2005; Ye 2009). Alkaloids are considered the major bioactive constituents of Mahonia species. Notably, jatrorrhizine, Yanqun Li and Dexin Kong contributed equally to this work.

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Variation in seed production of Jatropha curcas L. accessions under tropical dry forest conditions in Ecuador

Cited by 8 publications

References 36 publications

Viabilidad económica y financiera de sistemas silvopastoriles con Jatropha curcas L. en Manabí, Ecuador

Viabilidad económica y financiera de sistemas silvopastoriles con Jatropha curcas L. en Manabí, Ecuador

Cone structure and seed development in grafted witches’ broom and normal crown clones from the same trees of Pinus sibirica

Comparison of the alkaloid content and essential oil composition of Mahonia species as measured by HPLC and GC–MS methods

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