Global ETD Search

101	An Ethnobotanical Study on Folk Taxonomy and Uses of Mangifera TreesGrown in Southeast Asia / 東南アジアに生育するMangifera属樹の方名と利用に関する民族植物学的研究 Ueda, Yumi 24 September 2015 (has links) 京都大学 / 0048 / 新制・課程博士 / 博士(農学) / 甲第19324号 / 農博第2145号 / 新制\|\|農\|\|1036(附属図書館) / 学位論文\|\|H28\|\|N4952(農学部図書室) / 32326 / 京都大学大学院農学研究科地域環境科学専攻 / (主査)教授縄田栄治, 教授北山兼弘, 教授北島宣 / 学位規則第4条第1項該当 / Doctor of Agricultural Science / Kyoto University / DFAM Indegenous knowledge Intraspecific variation Local name Mango Thailand Wild fruit tree 610
102	Propuesta de instalación de una planta de producción de pectina para el aprovechamiento de la cáscara de mango Villegas Castañeda, Diego Alonso January 2023 (has links) La presente investigación tiene como objetivo general proponer la instalación de una planta de producción de pectina a partir de las cáscaras de mango desechadas por las plantas procesadoras de mango congelado en trozos ubicadas en el norte del Perú. Para ello, se llevó a cabo un estudio de mercado, a partir del cual se analizó la demanda, la oferta y el precio de la pectina en Quebec, potencial área de mercado seleccionada, dando como resultado que el presente proyecto cubrirá el 20% de la demanda insatisfecha pronosticada para los próximos 5 años. Asimismo, se realizó un análisis técnico, que consistió en determinar la localización de la planta, describir el proceso productivo, realizar el balance de materia, elaborar el plan de producción y de requerimiento de materiales, calcular la capacidad de producción y realizar la distribución de planta, obteniendo como resultado que la planta de producción de pectina se ubicará en el distrito de Lambayeque, contará con un proceso que incluye una etapa de acondicionamiento de materia prima y otra de recuperación de alcohol, tendrá una capacidad real de producción de 79 212 kg de pectina en el quinto año y requerirá un área total de 2 200 m2 para su instalación. Finalmente, se llevó a cabo un análisis económico financiero, obteniendo indicadores positivos y favorables que evidencian la viabilidad del proyecto, siendo estos un VAN de US$ 261 981,31, una TIR de 35,30% y un índice B/C de US$ 1,25. Polisacáridos Fábricas Mango Estudios de viabilidad
103	Diagnóstico de la capacidad empresarial y socio-organizativa de la Asociación de Pequeños Productores de Mango y Banano de Tongorrape – Motupe 2017 Campos Zapata, Llaquilina del Rosario, Contreras Gonzalez, Flor Karina January 2020 (has links) La presente investigación titulada “Diagnóstico de la capacidad empresarial y socio-organizativa de la asociación de pequeños productores de mango y banano de Tongorrape - Motupe 2017”, tiene como objetivo general diagnosticar la capacidad empresarial y socio-organizativa de la asociación de pequeños productores de mango y banano de Tongorrape (es decir, determinar la situación actual-nivel de logro de los 5 capitales basados en los medios de vida sostenibles, y a esto se le suma un capital más que es el capital comercial), mediante la teoría propuesta por Donovan y Stoian (modelo CATIE). Asimismo, la investigación tiene un enfoque mixto, cualitativo y cuantitativo, y un alcance descriptivo y exploratorio. Por otro lado, como primera población se tiene a 98 miembros que pertenecen a la Asociación, y como segunda población a 11 actores clave de la asociación, resultando en una muestra de 30 productores asociados para la primera población además de corresponder como muestra los 11 actores claves de la asociación, aplicándose los instrumentos de encuesta a los pequeños productores asociados y entrevista por saturación a los actores claves directivos y técnicos. Se concluye por los resultados obtenidos, que el diagnóstico de la capacidad empresarial y socio-organizativa de la asociación es positivo, puesto que, de acuerdo a los instrumentos implementados, un 60% de los encuestados valora la capacidad empresarial y socio-organizativa como alta, mientras que el 40% la valora como medio. Comercialización cooperativa Mango Cooperativas agrícolas Plátanos Motupe (Lambayeque, Perú)
104	HAPPILY EVER AFTER: FAIRY TALES AND RESCUE IN SANDRA CISNEROS’S THE HOUSE ON MANGO STREET Frank, Christina Marie 27 December 2007 (has links) No description available. House on Mango Street Fairy Tale Allusion Rescue Empowered Esperanza Cisneros Sandra
105	Pineapple Vinegar to Enhance Shelf Life of Carrot and Mango in Tanzania Matunda, Aldegunda Sylvester 09 July 2015 (has links) Fruits and vegetables are highly perishable, produced seasonally, and large quantities (about 50-60% of production) are wasted during high season due to poor handling and lack of cold storage in Tanzania. Processing excess pineapple into vinegar which can be used for preservation of other fruits and vegetables may be a helpful strategy for reducing losses. Vinegar was produced from pineapple juice supplemented with sugar to produce different degrees of Brix (13, 20 and 30) and was fermented with Saccharomyces cereviciae, Acetobacter pasteurianus, and Gluconobacter oxydans. Levels of acetic acid were measured in the vinegar produced. High production (5.8%) of acetic acid was observed with pineapple juice concentrated to 130 Brix with the combination of Saccharomyces cerevisiae, A. pasteurianus and G. oxydans. The pineapple vinegar produced was used for preservation of carrot and mango. The pH of carrot pickle and mango chutney was monitored for three months. The pH of preserved carrot and mango was below 4 and no significant changes in pH were observed during three months storage at 29-320C. Chemical analysis of vitamin A and vitamin C showed high losses of Vitamin A in carrot and increased vitamin A in mango, but losses of about 74% and 85% of vitamin C were observed in carrot and mango after processing. Consumer sensory testing of pineapple vinegar, carrot pickle and mango chutney showed no significance different on overall consumer acceptability of products during storage. Pineapple vinegar can be used to rescue mango and carrots that would otherwise be lost, producing highly acceptable food products in Tanzania. / Master of Science in Life Sciences Pineapple mango carrot vinegar sensory evaluation consumer acceptability Vitamin A Vitamin C
106	TBD Economic Impact of Fruit Flies in Mango Production in Senegal: Ex-Post Analysis of mango losses in Ziguinchor (Casamance) Diatta, Pierre Maurice 14 September 2016 (has links) The mango tree is one the important sources of income in the rural economy of Senegal. However, mango producers in Ziguinchor are facing fruit fly infestations leading to important losses in income. The aim of this study is to measure the impact of the losses encountered by mango farmers in Ziguinchor over three years 2012, 2013, and 2014 and conduct an econometric study to examine household characteristics associated with high level of losses. At the household level, the total yearly losses on average from fruit fly infestations represent 17.09 % of the average total household income in Ziguinchor (Casamance). The losses associated with variability of production are much smaller than losses from decreases of average yield. Furthermore, the results show that the number of hectares, level production, and use of Keitt varieties are three factors statistically significant, with a significant positive influence on losses from infestation. The use of fruit fly control technologies does not appear to significantly reduce losses. / Master of Science / Mango production is an important activity in Senegal such as in the south part of the country, in Ziguinchor (Casamance). And this activity hurled Senegal to the second largest exporter among West African countries in European market place. However, mango production is threatening by fruit fly pests and are responsible for a considerable loss in production. The aim of this paper is to evaluate the losses faced by mango producers in the south of Senegal by calculating the average losses and losses from a variation of the mango production for three years. Furthermore, characterize the different variable that are principally responsible for producer losses. A survey has been run in Ziguinchor. The results that farmer losses can reach up to 17.09% of annual total income per year. The different variables that impact the most losses are the number of plants, the production and the Keitt variety mango. Keywords: Mango production, Fruit fly infestation, Mean yield decrease loss, Producer risk loss Mango production Fruit fly infestation Mean yield decrease loss Producer risk loss
107	Environmentally friendly approach to postharvest quality maintenance of mango (Mangifera indica L.) cv. ‘Tommy Atkins’&‘Kent’ Van Deventer, Francois Johannes 14 February 2012 (has links) The mango (Mangifera indica L.) is an appealing subtropical fresh fruit with a pleasant flavor and taste, high nutritional value, beneficial medicinal properties and various processing options. However, as is the case with most subtropical fruit, it is a sensitive commodity, prone to losses postharvestly. The South African mango industry is highly dependent on a hot water and cold prochloraz dip treatment, to control postharvest anthracnose and soft brown rot on fruit destined for export. However, negatve public perceptions of synthetic fungicides and its use on fresh produce for disease control has been increasing in major export markets such as the European Union. This growing concern from a public point of view is forcing industry to consider more environmentally acceptable methods to maintain quality of mangoes during extended export periods. ‘Tommy Atkins’ and ‘Kent’ mangoes either uninoculated or artificially inoculated with Colletotrichum gloesporioiedes, Botryosphaeria parva or sterile agar, were used to evaluate softer, greener alternatives, in this study. Fruit were subjected to either a hot, Bacillus amyloliquefaciens (PPCB004) containing dip treatment for two minutes or a 24 hour 1-methylcyclopropene (1-MCP) gas treatment at 16 ºC or no treatment. Fruit were then stored at 10 ºC under either 5% O2 and 5% CO2 (CA-1) or 3% O2 and 8% CO2 (CA-2) controlled atmospheres (CA) for 18 days and allowed to ripen for five days at 25 ºC. Similarly, uninoculated or artificially inoculated fruit subjected to B. amyloliquefaciens, 1-MCP or a combination of the two treatments was stored at 10 ºC for 18 days under conventional storage. ‘Tommy Atkins’ fruit were packed into bags made from four different film types, untreated or after being subjected to a cold B. amyloliquefaciens dip treatment and stored for 23 days at 10 ºC. Overall, ‘Kent’ fruit were more susceptible to anthracnose and SBR after artificial inoculation. In vivo inoculated ‘Tommy Atkins’ fruit, storage under CA-1 gave the best control of soft brown rot whilst CA-2 storage gave the best control of anthracnose. For quality retention no definite conclusion could be made for both cultivars after CA storage or the combination of 1-MCP pre-treatment and CA storage. The combination of 1-MCP pre-treatment and B. amyloliquefaciens maintained the quality of ‘Kent’ mangoes under conventional storage the best. Anthracnose severity on both cultivars was reduced with 1-MCP treated fruit combined with the biocontrol pre-treatment. Modified atmosphere packaging in this study was found to be ineffective in maintaining quality of mangoes. Copyright / Dissertation (MSc(Agric))--University of Pretoria, 2011. / Microbiology and Plant Pathology / unrestricted Colletotrichum gloeosporioides South african mango industry 1-mcp Botryosphaeria Controlled atmosphere Modified atmosphere packaging Bacillus amyloliquefaciens Biocontrol Colletotrichum gloeosporioides South african mango industry 1-mcp Botryosphaeria Controlled atmosphere Modified atmosphere packaging Bacillus amyloliquefaciens Biocontrol Colletotrichum gloeosporioides South african mango industry 1-mcp Botryosphaeria Controlled atmosphere Modified atmosphere packaging Bacillus amyloliquefaciens Biocontrol Colletotrichum gloeosporioides South african mango industry 1-mcp Botryosphaeria Controlled atmosphere Modified atmosphere packaging Bacillus amyloliquefaciens Biocontrol Controlled atmosphere 1-mcp Botryosphaeria South african mango industry Colletotrichum gloeosporioides Modified atmosphere packaging Biocontrol Bacillus amylolique faciens Botryosphaeria parva Tommy atkins mangoes Kent mangoes Bacillus amylolique faciens Biocontrol Colletotrichum gloeosporioides Modified atmosphere packaging South african mango industry Botryosphaeria Controlled atmosphere 1-mcp UCTD
108	A methodical approach for non-destructive estimation of plant pigments by means of remission spectroscopy applied in fruit and vegetable analyses Pflanz, Michael 27 October 2014 (has links) Anbaubegleitende spektral-optische Analysen direkt an der Pflanze haben zunehmend Bedeutung für die gartenbauliche Produktion. Veränderungen individueller Pflanzeninhaltsstoffe können mit Hilfe optischer Sensoren unmittelbar und beliebig oft erfasst werden, wodurch Pflanzenreaktionen auf veränderte Umgebungs- und Kulturbedingungen instrumentell messbar sind. Im Konzept eines Präzisionsgartenbau könnten diese zusätzlichen Informationen adaptiven Kulturmaßnahmen dienen und zur effizienten Nutzung von Ressourcen in der Produktion von Obst und Gemüse beitragen. Die wellenlängenspezifische Lichtabsorption pflanzlicher Gewebe ermöglicht zerstörungsfreie Reflexions- oder Transmissionsmessungen und die Adressierung von Pigmentgruppen im ultravioletten und sichtbaren Bereich des elektromagnetischen Spektrums. Auf Grund veränderlicher Gehalte während des Wachstum und der Entwicklung pflanzlicher Gewebe, sind Pigmente zudem wichtige Indikatoren für den physiologischen Zustand von Obst und Gemüse. Präzise zerstörungsfreie Spektralanalysen werden allerdings durch komplexe optische Eigenschaften biologischen Materials, besonders im Hinblick auf die Reifeentwicklung von Obst und Gemüse erschwert. Zur Lösung dieser Problematik wurde ein neuer iterativer Ansatz (iMLR) entwickelt, der überlagerte in-situ und in-vivo Spektren individueller Pigmente aus einem Summenmessspektrum separiert. Dieser Algorithmus wurde in eine eigenständige Applikation überführt. Eine Datenbank enthält spektrale Signaturen von Chlorophyll a und b, Lycopin, β-Carotin, α-Carotin, Lutein und Violaxanthin. Obwohl die spektrale Analyse einzelner Pigmente durch optische Störgrößen in komplex aufgebauten biologischen Geweben und Pigmentgemischen erschwert ist, konnte ein neuer Ansatz erarbeitet und validiert werden. Diese Methode minimiert spektrale Überlagerung von in-situ und in-vivo aufgezeichneten Messsummensignalen und analysiert Pigmentgehalte in Farbstoffgemische zuverlässig. / Spectral measurements on plants have already been introduced in practice through extensive research and through the recent increase in the availability of low-cost devices. It can be expected that optical sensor systems may contribute to an economic and sustainable use of natural resources as a part of the concept for precision horticulture. In terms of phytomonitoring approaches, such technologies which address variable amounts of individual chromophoric plant components become more important. Their wavelength-selective light absorption makes pigments speciﬁcally responsive to reﬂection or transmission recordings in the ultraviolet and visible range of the electromagnetic spectrum. Additionally, pigments serve as indicators for physiological stages of leaf and fruit. Consequently, the instrumental recording of variable pigment contents has high potential with regards to dynamic plant-adapted processes during the production of fruit and vegetables. Solving the known issues of non-destructive spectroscopy, a new approach was ﬁgured out in the present work to obtain a more precise analysis of individual pigment contents, which vary during the cultivation of horticultural crops. The tool is based on an iterative algorithm (iMLR), that separates coinciding in-situ and in-vitro spectra from sum signals of individual pigments. Finally, the algorithm was integrated into a stand-alone application containing a library of chlorophyll a and b, as well as signatures of lycopene, β-carotene, α-carotene, lutein and violaxanthin. It can be pointed out that individual pigment compositions are suitable indicators of the physiological stage of horticultural products. However, the spectral analysis of single pigment levels is challenging due to complex interactions of coinciding absorption and diﬀuse light scattering in natural pigment mixtures or in fruit extracts. From this, an improved method for the reliable decomposition of spectral signals was developed. Tomate zerstörungsfrei Mango Spektroskopie Spektralanalyse iMLR Pigmente Kirsche Fruchtreife VIS UV Präzisionsgartenbau Lichtstreuung tomato mango spectroscopy spectral analysis Scattering iMLR pigments cherry Fruit maturity Non-invasive VIS UV precision horticulture 630 Landwirtschaft, Veterinärmedizin 39 Landwirtschaft, Garten ddc:630
109	A cooperative model for enhancing market participation by small holder mango farmers in Vhembe District of Limpopo Province, South Africa Takalani, Thakhani Khennedy 16 July 2015 (has links) PHDRDV / Institute for Rural Development Small holder mango farmer Market constraints Stakeholder-driven Intervention framework Cooperative model 338.6420968257 Farms, small -- South Africa -- Limpopo Mango -- South Africa -- Limpopo
110	Genetics of Southeast Asian populations and interspecific hybrids of Fusarium spp. Mohamed Nor, Nik Mohd Izham January 1900 (has links) Doctor of Philosophy / Department of Plant Pathology / John F. Leslie / Members of the genus Fusarium are widely distributed in many geographic regions of the world. This genus includes plant pathogens of many important cereal crops, e.g., wheat, maize, rice and sorghum, and of other native and economically important plants. From culture collections at Kansas State University and Universiti Sains Malaysia, strains from Southeast Asia, primarily from Malaysia and Thailand, associated with mango malformation disease, bakanae disease of rice, and stalk rot of sorghum were analyzed in sexual crosses and molecular diagnostics, e.g., Amplified Fragment Length Polymorphisms (AFLPs). Fusarium proliferatum was recovered from all three crops, with each crop also yielding some species unique to the crop, e.g. F. fujikuroi from rice, F. thapsinum from sorghum, and F. mangiferae from mango. These results are consistent with hypotheses that F. proliferatum has a wide host range while other species have much more limited host preferences. The absence from our samples of species associated with these diseases in other parts of the world suggests policies should be developed to reduce the chances of introduction of novel pathogens into Southeast Asia. Fusarium fujikuroi and F. proliferatum are closely related. They usually can be separated by sexual cross-fertility and DNA sequence analysis. However, some strains can cross irregularly and with poor fertility to produce viable interspecific hybrids. From a laboratory cross between F. fujikuroi FGSC8932 and F. proliferatum FGSC7615, 533 progeny were collected. These progeny were characterized for their AFLP genotype, mating type, gibberellic acid production, and pathogenicity on rice, onions, and apples. A recombination-based map from this interspecific cross was constructed. QTLs associated with gibberellic acid production, rice pathogenicity, and onion pathogenicity were identified. Gene segregation amongst the progeny of the F. fujikuroi × F. proliferatum cross was distorted towards F. proliferatum. Both novel and transgressive pathogenicity phenotypes were detected. Overall, this research demonstrates the potential threats that can result from an interspecific cross. These threats include pathogens with novel toxin profiles, new pathogenicity phenotypes, and more virulent strains. The variation observed among the progeny may enable isolation and characterization of genetic factors that have a role in pathogenicity, toxin production, and host specificity. Rice bakanae Mango malformation Sorghum Fusarium proliferatum Segregation distortion Pathogenicity Agriculture, General (0473) Genetics (0369) Plant Pathology (0480)

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