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Articles published by CIP staff on potatoes, sweet potatoes and andean tuber and root crops
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Nutrition promotion messages: The effect of information on consumer sensory expectations, experiences and emotions of vitamin A-biofortified sweet potato

Nutrition promotion messages: The effect of information on consumer sensory expectations, experiences and emotions of vitamin A-biofortified sweet potato | Articles Published by CIP Staff | Scoop.it
Lagerkvist, C.J.; Okello, J.; Muoki, P.; Heck, S.; Prain, G. 2016. Nutrition promotion messages: The effect of information on consumer sensory expectations, experiences and emotions of vitamin A-biofortified sweet potato. Food Quality and Preference. (UK). ISSN 0950-3293. Published online 27 Apr 2016: 25 p.
Vitamin A deficiency (VAD) is a major public health problem in many developing countries globally. It is estimated that 250 million children under the age of five years suffer from clinical VAD. The effects of VAD include eye damage, weakened immunity and general increases in the incidence and severity of infectious diseases and mortality associated with e.g. birth-related complications, measles and diarrhoea among children. Biofortification is an essential strategy to alleviate VAD by incorporation of micronutrients into food staples through conventional breeding processes. However, vitamin A biofortification involves changes in other product attributes such as colour and taste that may be undesirable to some consumers. This study investigated how information about vitamin A biofortification influences the expected and actual sensory evaluation and the emotions evoked through actual tasting. For this, 501 randomly selected caregivers of children aged less than five years or pregnant women in western Kenya participated in a field information experiment combined with sensory testing of vitamin A-biofortified orange-fleshed sweet potato (OFSP). Surprisingly, the results showed that detailed information about nutritional benefits decreased consumer acceptance. Information about attribute drawbacks had discriminatory effects only in relation to expected taste and experienced texture. The findings indicated that the appropriateness of the nutritional aspect of OFSP was related to the information treatment and to household food insecurity status, but not to income or age of participants. An EmoSemio profile indicated a positive effect of nutrition information on emotions that did not correspond to the sensory assessment. These results raise important questions relating to how nutrition information should be provided to generate consumer acceptance and adoption of OFSP.
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Genotype × environment interaction and selection for drought adaptation in sweetpotato (Ipomoea batatas [L.] Lam.) in Mozambique

Genotype × environment interaction and selection for drought adaptation in sweetpotato (Ipomoea batatas [L.] Lam.) in Mozambique | Articles Published by CIP Staff | Scoop.it
Andrade, M.I.; Naico, A.; Ricardo, J.; Eyzaguirre, R.; Makunde, G.S.; Ortiz, R.; Gruneberg, W.J. 2016. Genotype x environment interaction and selection for drought adaptation in sweetpotato (Ipomoea batatas [L.] Lam.) in Mozambique. Euphytica. (Netherlands). ISSN 0014-2336. Published online 09 Apr 2016: 20 p.
The aim of this research was to determine G 9 E patterns particularly G 9 S for storage root yield and dry matter content establish the magnitude of G 9 E interaction in sweetpotato under irrigation and drought, and assess the usefulness of a drought intensity index to identify suitable clones with storage root and vine yields for drought-prone environments in Mozambique. This research was also the first to study the value of sweetpotato landraces from Mozambique under drought.
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Breeding Strategies to Enhance Drought Tolerance in Crops

Breeding Strategies to Enhance Drought Tolerance in Crops | Articles Published by CIP Staff | Scoop.it
Rauf, S.; Al-Khayri, J.M.; Zaharieva, M.; Monneveux, P.; Khalil, F. 2016. Breeding strategies to enhance drought tolerance in crops. In: Al-Khayri, J.M.; Jain, S.M.; Johnson, D.V. (eds). Advances in plant breeding strategies: Agronomic, abiotic and biotic stress traits. Cham (Switzerland). Springer International Publishing. ISBN 978-3-319-22517-3. pp. 397-445.
This chapter discusses screening and breeding methods with emphasis on bridging the gap between genotype and phenotype. Some examples of success in the development of drought tolerant germplasm are presented.
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Effect of maize intercrop plant densities on yield and β-carotene contents of orange-fleshed sweetpotatoes

Effect of maize intercrop plant densities on yield and β-carotene contents of orange-fleshed sweetpotatoes | Articles Published by CIP Staff | Scoop.it

Asiimwe, A.; Tabu, I.M.; Lemaga, B.; Tumwegamire, S. 2016. Effect of maize intercrop plant densities on yield and -carotene contents of orange-fleshed sweetpotatoes. African Crop Science Journal. (Uganda). ISSN 1021-9730. 24(1):75-87.

Despite efforts to demonstrate the value of orange-fleshed sweetpotato (OFSP) (Ipomoea batatas L.) and quality protein maize (Zea mays L.) in combating vitamin A and protein malnutrition, small land holdings by rural poor farmers still limit the crops’ overall production in Africa. As such, intercropping and optimum plant density in cropping systems will help farmers to improve productivity of the crop, and hence, improve household food and nutrition security. This study determined the effect of maize plant population, in a sweetpotato-maize intercrop, on yields and ß-carotene content of two popular OFSP cultivars, Ejumula and NASPOT 9 O (Kabode). Each variety was intercropped with maize variety Longe 5, at three plant densities (i.e. 41,666, 55,555 and 88,888 plants ha), at Ngetta Zonal Agricultural Research and Development Institute in Uganda. While 55,555 plants of each OFSP cultivar were used for both sole and intercrops, the sole maize plot was 44,444 plants ha. Maize and sweetpotato were harvested at 120 and 135 days after planting, respectively. ß-carotene content and yield in sweetpotato roots were significantly (P<0.05) reduced by high maize density. Irrespective of maize density, NASPOT 9 O produced more root yields than Ejumula. Land Equivalent Ratios of >1.2 were obtained at maize intercrop densities of 41,666 and 55,555 plants ha.

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Plant water relations and canopy temperature depression for assessing water stress tolerance of potato

Plant water relations and canopy temperature depression for assessing water stress tolerance of potato | Articles Published by CIP Staff | Scoop.it
Mahmud, A.A.; Hossain, M.M.; Karim, M.A.; Mian, M.A.K.; Zakaria, M.; Kadian, M.S. 2016. Plant water relations and canopy temperature depression for assessing water stress tolerance of potato. Indian Journal of Plant Physiology. (India). ISSN 0019-5502. 21(1):56-63 
An experiment was conducted with five potato genotypes at Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur during 2010–2011 under control and water stress conditions to determine the effect of water stress on plant water relations and canopy temperature depression of potato.
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Potato Origin and Production

Potato Origin and Production | Articles Published by CIP Staff | Scoop.it
Haan, S. de.; Rodriguez, F. (CIP). 2016. Potato origin and production. In: Singh, J. Kaur, L. (eds). Advances in potato chemistry and technology.Book Chapter London (UK). Elsevier Inc. ISBN 978-0-12-800002-1. pp. 1-32. https://books.google.com.pe/books?id=GO9eBwAAQBAJ&pg=PA1&source=gbs_toc_r&cad=3#v=onepage&q&f=false
The extent of the potato gene pool, with its abundant landrace diversity and numerous wild relatives, offers a wide range of options for prospecting, prebreeding, and niche market development. Landraces are still widely produced by smallholder farmers in the center of origin and are a key component of complex production systems that cover multiple agroecologies and production objectives.
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Evaluación del gen que codifica la enzima βHPMEH para la inhibición de la marchitez bacteriana causada por Ralstonia solanacearum

Evaluación del gen que codifica la enzima βHPMEH para la inhibición de la marchitez bacteriana causada por Ralstonia solanacearum | Articles Published by CIP Staff | Scoop.it
International Potato Center (CIP)'s insight:

Fernandez, E.; Gutarra, L.; Kreuze, J. 2015. Evaluacion del gen que codifica la enzima <beta>HPMEH para la inhibicion de la marchitez bacteriana causada por Ralstonia solanacearum. Revista Peruana de Biologia. (Peru). ISSN 1561-0837. 22(2):193-198.

Con el objetivo de evaluar el gen <beta>hpmeh, se diseñaron dos vectores que expresen este gen bajo el control de dos diferentes promotores, los cuales fueron verificados por análisis de restricción, secuenciamiento y posteriormente mediante técnicas de agroinfiltración, se observó su expresión y su efecto frente a R. solanacearum en hojas de papa de la variedad Desiree. Los resultados de la expresión transitoria, muestran que el gen <beta>hpmeh retrasó la aparición de síntomas de la marchitez bacteriana y sería un candidato potencial para transformación genética de la planta entera.

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Effects of Sodium Metabisulphite and Blanching Pretreatments on the Quality Characteristics of Yam Bean (Pachyrhizus erosus) Flour

Effects of Sodium Metabisulphite and Blanching Pretreatments on the Quality Characteristics of Yam Bean (Pachyrhizus erosus) Flour | Articles Published by CIP Staff | Scoop.it
International Potato Center (CIP)'s insight:

Buckman, E.S.; Plahar, W.A.; Oduro, I.N.; Carey, E.E. 2015. Effects of sodium metabisulphite and blanching pretreatments on the quality characteristics of yam bean (Pachyrhizus erosus) flour. British Journal of Applied Science and Technology. ISSN 2231-0843. 6(2):138-144.

A standard procedure for yam bean flour production has been suggested to include peeling and sodium metabisulphite pretreatment.

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Pests and diseases affecting potato landraces and bred varieties grown in Peru under indigenous farming system

International Potato Center (CIP)'s insight:

W. Pérez Barrera, M. Valverde Miraval, M. Barreto Bravo, J. Andrade-Piedra, G. A. Forbes. 2015.

Pests and diseases affecting potato landraces and bred varieties grown in Peru under indigenous farming system.  Revista Latinoamericana de la Papa 19(2):29-41. The major pests and diseases were identified and quantified on thirteen potato landraces and three bred varieties cultivated in Peru. Late blight (Phytophthora infestans) was the primary biotic constraint affecting plants before flowering with an average severity of 24%. No other pathogens caused severe foliar disease, but black scurf (Rhizoctonia solani) was relatively common on tubers of some genotypes with incidence ranging from 4.30 to 33.33%. The viruses most generally considered important in potato seed degeneration, PVY and PLRV, were extremely rare, with 1.11 and 0.12 % incidence, respectively. Other viruses considered mild, such as PVX and PVS, were more common, with incidence of 28.23 and 22.29 %, respectively. Potato flea beetle (Epitrix spp.), potato leaf beetle (Diabrotica spp.) and Andean potato weevil (Premnotrypes spp.) were common, with incidence of 28.14, 18.75 and 13.61%, respectively. Potato landraces known as Ishkupuru, Lengua de vaca, Chaulina, Chaulina Tajacaja and Negro cayash were identified as potentially resistant to P. infestans.

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INIA 317 – Altiplano, variedad de papa con buena adaptación en la región altiplánica del Perú

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J. Arcos, J.; Gastelo, M.V. Holguín

INIA 317: Altiplano, variedad de papa con buena adaptación en la región altiplánica del Perú.

Revista Latinoamericana de la Papa 19(2):68-75. 2015.

La papa constituye uno de los cultivos alimenticios más importantes en la agricultura familiar de la región andina del Perú. En las condiciones agroecológicas de esta región, uno de los factores más importantes que limita los niveles de producción y productividad de la papa es el clima adverso. Con el objetivo de lograr genotipos de papa; que además, de tener buena capacidad de rendimiento, respondan mejor a los nuevos estreses abióticos y bióticos provocados por el cambio climático, el Centro Internacional de la Papa realizó cruzamientos entre los cultivares nativos pertenecientes a Solanum tuberosum subsp. andigena. La evaluación de los genotipos se realizó a partir del año 2000 en las diferentes localidades de la región andina. Desde del año 2005, la Estación Experimental Illpa-Puno del Instituto Nacional de Innovación Agraria (INIA) y el Centro Internacional de la Papa (CIP) dentro de las actividades del Proyecto ALTAGRO, evaluaron un grupo de estos clones en diversas comunidades de la Región Altiplánica del Perú, a través de la metodología de selección participativa, con el objetivo de obtener una variedad de papa con alta capacidad productiva, adaptada a las condiciones climáticas de la Región Altiplánica y con aptitud para procesamiento en tunta. Como resultado de este trabajo de investigación se ha logrado seleccionar un genotipo de papa adaptada a la Región Altiplánica del Perú, con alto potencial de rendimiento y alto contenido de materia seca. Este genotipo de papa inicialmente identificado como el clon 399085.30 (B1C5041.30), actualmente es denominado variedad INIA 317 – ALTIPLANO.

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Catálogo de variedades de papa nativa de Chugay, La Libertad - Peru/ Catalog of ancestral potato varieties from Chugay, La Libertad - Peru - International Potato Center

Catálogo de variedades de papa nativa de Chugay, La Libertad - Peru/ Catalog of ancestral potato varieties from Chugay, La Libertad - Peru - International Potato Center | Articles Published by CIP Staff | Scoop.it
International Potato Center (CIP)'s insight:

Centro Internacional de la Papa (CIP) Asociacion Pataz Instituto Nacional de Innovacion Agraria (INIA). 2015. Catalogo de variedades de papa nativa de Chugay, La Libertad - Peru/ Catalog of ancestral potato varieties from Chugay, La Libertad - Peru. Lima (Peru). Centro Internacional de la Papa (CIP). ISBN 978-92-9060-467-9. 199 p. http://dx.doi.org/10.4160/9789290604679.

 

The new Catalog of Ancestral Potato Varieties from Chugay highlights the varietal diversity that farmers conserve on-farm. The bilingual catalog is a first of its kind with detailed information for 129 landraces, including nutritional value and resistance traits. Since the International Year of the Potato (2008) multiple high-quality catalogues have been published for localities in central and southern Peru. Yet, this new catalog is the first for a single district in North Peru. It sets a new benchmark for future inventories and clearly recognizes the role of farmers. The catalog bears witness to a vast ancestral culture and, at the same time, makes a valuable contribution to scientific knowledge. The publication can be used as a baseline inventory to monitor the conservation status of landraces, as a guide for studying new attributes or a source of potential landraces to be promoted for the income generation.

El nuevo Catálogo de Variedades Ancestrales de Papa de Chugay pone de relieve la diversidad varietal que los agricultores de este distrito conservan en el campo. Este catálogo bilingüe es el primero de su clase con información detallada de 129 cultivares, incluyendo valores nutricionales y propiedades de resistencia. Desde el Año Internacional de la Papa (2008) se han publicado múltiples catálogos de alta calidad de localidades del centro y sur del Perú. Sin embargo, este nuevo catálogo es el primero de un solo distrito del norte del país. Establece un nuevo punto de referencia para futuros inventarios y reconoce claramente el papel que cumplen los agricultores. El catálogo da testimonio de una vasta cultura ancestral y, al mismo tiempo, ofrece una contribución invalorable al conocimiento científico. Esta publicación se puede usar como un inventario de referencia para monitorear el estado de conservación de los cultivares, como una guía para estudiar nuevos atributos o como fuente de cultivares potenciales que se pueden promover para la generación de ingresos.

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Understanding collective action and women's empowerment in potato farmer groups in Ntcheu and Dedza in Malawi

Understanding collective action and women's empowerment in potato farmer groups in Ntcheu and Dedza in Malawi | Articles Published by CIP Staff | Scoop.it
International Potato Center (CIP)'s insight:

Mudege, N.N.; Nyekanyeka, T. ; Kapalasa, E.; Chevo, T.; Demo, P. 2015. Understanding collective action and women's empowerment in potato farmer groups in Ntcheu and Dedza in Malawi.  Journal of Rural Studies. (UK). ISSN 0743-0167. 42:91-101. http://dx.doi.org/10.1016/j.jrurstud.2015.09.002.

This paper explores the potential for potato farmer groups to empower women in Malawi. It does this by
examining how social and gender norms in communities, including the distribution of power, resources
and responsibilities, may have an impact on the ability of farmer groups to empower female group
participants.

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Is Discrimination of 13C in Potato Leaflets and Tubers an Appropriate Trait to Describe Genotype Responses to Restrictive and Well-Watered Conditions?

Is Discrimination of 13C in Potato Leaflets and Tubers an Appropriate Trait to Describe Genotype Responses to Restrictive and Well-Watered Conditions? | Articles Published by CIP Staff | Scoop.it
International Potato Center (CIP)'s insight:

Ramirez, D.A.; Rolando, J.L.; Yactayo, W. ; Monneveux, P.; Quiroz, R. 2015. Is Discrimination of 13C in potato leaflets and tubers an appropriate trait to describe genotype responses to restrictive and well-watered conditions?. Journal of Agronomy and Crop Science. (Korea). ISSN 0931-2250. 201(6): 410-418.

The article objectives were: (i) to compare physiological performance and biomass accumulation among genotypes along the growing period and (ii) to test the reliability of Δleaflet and Δtuber to determine key mechanisms responsible of the varietal differences in biomass accumulation and tuber yield under different water availability levels.

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Yield and Physiological Response of Potatoes Indicate Different Strategies to Cope with Drought Stress and Nitrogen Fertilization

Yield and Physiological Response of Potatoes Indicate Different Strategies to Cope with Drought Stress and Nitrogen Fertilization | Articles Published by CIP Staff | Scoop.it
Saravia, D.; Farfan-Vignolo, E.R.; Gutierrez, R.; Mendiburu, F. de.; Schafleitner, R.; Bonierbale, M.; Khan, M.A. 2016. Yield and physiological response of potatoes indicate different strategies to cope with drought stress and nitrogen fertilization. American Journal of Potato Research. (USA).
This study aimed to assess the response to water deficit and two levels of nitrogen (0 and 200 kg N.ha-1) on agronomic and physiological traits of three potato clones (UNICA, Achirana-INTA, and CIP397077.16) chosen for their short vegetative period (90 – 110 days) and relative drought tolerance
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Planning an integrated agriculture and health program and designing its evaluation: Experience from Western Kenya

Planning an integrated agriculture and health program and designing its evaluation: Experience from Western Kenya | Articles Published by CIP Staff | Scoop.it
Cole, D.C.; Levin, C.; Loechl, C.; Thiele, G.; Grant, F.; Webb Girard, A.; Sindi, K.; Low, J. 2016. Planning an integrated agriculture and health program and designing its evaluation: Experience from Western Kenya. Evaluation and Program Planning. (UK). ISSN 0149-7189. 56:11-22.
The purposes of this paper are: to outline the multiple steps involved in planning the multi-sectoral program, including crucial linkage mechanisms across sectors; to describe our approach to monitoring and evaluation of its implementation; and to reflect on our experience of implementing the program and its evaluation
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‘NASPOT 12 O’ and ‘NASPOT 13 O’ Sweetpotato

‘NASPOT 12 O’ and ‘NASPOT 13 O’ Sweetpotato | Articles Published by CIP Staff | Scoop.it
Mwanga, R.O.M.; Kyalo, G.; Ssemakula, G.N.; Niringiye, C.; Yada, B.; Otema, M.A.; Namakula, J.; Alajo, A.; Kigozi, B.; Makumbi, R.N.M.; Ball, A.M.; Gruneberg, W.J.; Low, J.; Yencho, G.C. 2016. 'NASPOT 12 O' and 'NASPOT 13 O' sweetpotato. HortScience. (USA). ISSN 0018-5345. 51(3):291-295.
Two sweetpotato [Ipomoea batatas L. (Lam.)] cultivars, NASPOT 12 O (Namu-longe sweetpotato 12 orange-fleshed) and NASPOT 13 O (Namulonge sweetpotato 13 orange-fleshed) were approved for release by the Ugandan Plant Variety Release Committee (UPVRC) in Nov. 2013 (Ssemakula et al.,2013) The two cultivars herein described and released in 2013, have high average storage root yields, 43.1 t·ha−1 (‘NASPOT 12 O’) and 27.8 t·ha−1 (‘NASPOT 13 O’) on station, and 14.9 t·ha−1 (‘NASPOT 12 O’) and 9.7 t·ha−1 (‘NASPOT 13 O’) on farm compared with the national on-farm average for Uganda of 4.5 t·ha−1. The cultivars have acceptable root shape, high dry matter content (DMC) (>30%) with good-to-excellent consumer qualities. The cultivars also have moderate levels of field resistance to sweetpotato virus disease (SPVD) and alternaria bataticola blight. The two cultivars were bred targeting development of vitamin A–rich (biofortified) orange-fleshed sweetpotato (OFSP). OFSP have been shown to be both effective for increasing maternal and child vitamin A intake and status (Hotz et al., 2012; Ruel and Alderman, 2013). The potential of the two OFSP cultivars to contribute to food and nutrition security in Uganda and the developing world is high (Low et al., 2007; Ruel, 2001), especially where high dry matter and starchy sweetpotatoes are preferred. The cultivars can be used directly if adapted in similar agroecologies in sub-Saharan Africa and globally and/or used as parents in breeding programs to develop locally adapted cultivars that meet high dry matter consumer preferences.
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Rpi-blb2 gene from Solanum bulbocastanum confers extreme resistance to late blight disease in potato - Online First - Springer

Rpi-blb2 gene from Solanum bulbocastanum confers extreme resistance to late blight disease in potato - Online First - Springer | Articles Published by CIP Staff | Scoop.it
Orbegozo, J.; Roman, M.L.; Rivera, C.; Gamboa, S.; Tovar, J.C.; Forbes, G.A.; Lindqvist-Kreuze, H.; Kreuze, J.F.; Ghislain, M. 2016. Rpi-blb2 gene from Solanum bulbocastanum confers extreme resistance to late blight disease in potato. Plant Cell, Tissue and Organ Culture. (Netherlands). ISSN 0167-6857. Published online 10 Jan 2016:13 p.
The Rpi-blb2 gene (R gene) from the Mexican wild potato species, Solanum bulbocastanum, was introduced into the potato variety Desiree by agro-infection in order to confer resistance to late blight which is still the most important disease of the potato worldwide.
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The Adoption of Cv. Igorota in the Philippines and Vietnam - Online First - Springer

The Adoption of Cv. Igorota in the Philippines and Vietnam - Online First - Springer | Articles Published by CIP Staff | Scoop.it
Chien, D.H.; Ganga, Z.N.; Simongo, D.K.; Kiswa, C.G.; Gonzales, I.C.; Perez, J.; Tung, P.X.; Hau, N.T.; Artola, K.; Valkonen, J.P.T.; Li, C.; Zaag, P. vander. 2016. The adoption of Cv. Igorota in the Philippines and Vietnam. American Journal of Potato Research. (USA). ISSN 1099-209X. Published online 01 mar 2016:6 p.
Igorota (also known as PO3) is a high yielding potato cultivar with durable resistance to LB (Phytophthora infestans (Mont.) De Bary), resistance to PVY and PLRV, tolerant to heavy rain and good adaptation to growing conditions in the tropical highlands. Igorota is a result of intercrossing poorly adapted but highly LB resistant Solanum tuberosum ssp. Andigena clones obtained from the International Potato Center (CIP), Lima, Peru in 1986. Igorota is a seedling, selected at La Trindad, Benguet, the Philippines in 1988.
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A novel sweet potato potyvirus ORF is expressed via polymerase slippage and suppresses RNA silencing

A novel sweet potato potyvirus ORF is expressed via polymerase slippage and suppresses RNA silencing | Articles Published by CIP Staff | Scoop.it
International Potato Center (CIP)'s insight:

Untiveros, M.; Olspert, A.; Artola, K.; Firth, A.E.; Kreuze, J.F.; Valkonen, J.P.T. 2016. A novel sweet potato potyvirus ORF is expressed via polymerase slippage and suppresses RNA silencing.Molecular Plant Pathology. (UK). ISSN 1464-6722.  http://dx.doi.org/10.1111/mpp.12366.

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The acceptability of dietary tools to improve maternal and child nutrition in Western Kenya

The acceptability of dietary tools to improve maternal and child nutrition in Western Kenya | Articles Published by CIP Staff | Scoop.it
International Potato Center (CIP)'s insight:

Krama, N.; Melgen, S.; Kedera, E.; Kortso Collison, D.; Colton, J.; Blount, W.; Grant, F.; Girard, W. 2016. The acceptability of dietary tools to improve maternal and child nutrition in Western Kenya. Public Health Nutrition (UK)  ISSN 1368-9800  http://dx.doi.org/10.1017/S1368980015003213

Objective Dietary practices in Kenya often fail to provide adequate nutrition during the first 1000 days of life, from conception to 2 years of age. We developed and qualitatively assessed the acceptability of easy-to-use dietary tools consisting of a marked bowl, slotted spoon and illustrated counselling card to support appropriate dietary practices during pregnancy, exclusive breast-feeding and complementary feeding of children aged 6–24 months.

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Constraints and Breeding Priorities for Increased Sweetpotato Utilization in Ghana

Constraints and Breeding Priorities for Increased Sweetpotato Utilization in Ghana | Articles Published by CIP Staff | Scoop.it
International Potato Center (CIP)'s insight:

Baafi, E.; Manu-Aduening, J.; Carey, E.E.; Ofori, K.; Blay, E.T.; Gracen, V.E. 2015. Constraints and breeding priorities for increased sweetpotato utilization in Ghana. Sustainable Agriculture Research. (Canada). ISSN 1927-050X. 4(4):1-16.

 The study employed Focus Group Discussion (FGD) followed by administration of Semi-structured Questionnaire (SSQ). Data collected were analysed using Genstat and Statistical Package for Social Sciences. Seventy-nine people consisting of 63% males and 37% females, and 178 people consisting of 52% female and 48% males were involved in the FGD and SSQ, respectively. Majority (94%) of farmers’ ranked sweetpotato from 1 to 5 among 24 cultivated crops. Only about 28% of consumers ate sweetpotato at least six days per week. The survey revealed that consumers in Ghana desired non-sweet, high dry matter sweetpotato cultivars.

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Sweet Potato Ontology

Sweet Potato Ontology
International Potato Center (CIP)'s insight:

Hualla, V.R.; Simon, R.; Mwanga, R.; Juarez Soto, H.S.; Rossel Montesinos, G. 2015. The sweetpotato ontology. Metadata and Ubiquitous Access to Culture. Sao Paulo (Brazil). 1-4 Sep 2015. DCMI International Conference on Dublin Core and Metadata Applications Proceedings. ISSN 1939-1366. DC-2015 - The Sao Paulo Proceedings:206-208.

 The sweetpotato ontology is part of a community effort to establish a set standard nomenclature to describe crop development and agronomic traits to facilitate analyzing and sharing of phenotypic and genotypic information. The development and adoption of data standards is vital to the interoperability of sweetpotato data. Phenotype ontologies are controlled, hierarchically-related phenotypic descriptions that enable large-scale computation among individuals, populations, and even multiple species. The International Potato Center (CIP) is currently pursuing the development of standards for plant phenotyping data in collaboration with other interested groups. The advantage of ontology is that both humans and software applications can understand a data domain. This will allow the application of numerical or data mining techniques that may help to uncover previously unknown correlations. Building on previous draft versions, here we focus on traits important to breeding.

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Potato and sweetpotato in Africa: transforming the value chains for food and nutrition security.

Potato and sweetpotato in Africa: transforming the value chains for food and nutrition security. | Articles Published by CIP Staff | Scoop.it
International Potato Center (CIP)'s insight:

Low, J.; Nyongesa, M.; Quinn, S.; Parker, M. (eds). 2015. Potato and sweetpotato in Africa. Transforming the value chains for food and nutrition security. Boston (USA). CABI International. ISBN 978-1-78064-420-2. 632 p.

This book is based on papers presented at the Ninth Triennial African Potato Association Conference, Naivasha, Kenya, 30 June-4 July 2013.The book focuses on the policies for germplasm exchange, food security and trade in Africa, seed systems, breeding and disease management and postharvest management, processing technologies and marketing systems of potato and sweet potato. The nutritional value and changing behaviours of potato and sweet potato crops are also discussed.

 
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Local Knowledge of Native Potato (Solanum spp) for Long-term Monitoring on three Andean Communities of Apurimac, Peru

Local Knowledge of Native Potato (Solanum spp) for Long-term Monitoring on three Andean Communities of Apurimac, Peru | Articles Published by CIP Staff | Scoop.it
International Potato Center (CIP)'s insight:

Valdivia-Díaz, M.; Polrich, S.; Torre Cuadros, M.A. la; Haan, S. de (2015). Local knowledge of native potato (Solanum spp) for long-term monitoring on three Andean communities of Apurimac, Peru.  Procedia Environmental Sciences. 29:64-65.

Multiple drivers related to changes in climate and socio-cultural structure in the Peruvian Highland are of increasing importance for the loss of the biological diversity of potato landraces and related collective knowledge in their center of diversity. For example in the district of Haquira, which is located in the province of Cotabambas, Apurimac, many young farmers abandon agriculture to work in the mines or migrate to search for more income attractive options in larger towns. The precise impact of these tendencies on agrobiodiversity has not been assessed and it remains difficult to establish timelines that reflect changes as no reference data exist that is useful for comparison. A cost efficient and easy applicable method to assess local crop diversity based on traditional names and establish a baseline for red-listing of landraces is the five cell analysis (FCA). In a case study, three communities in Haquira – Pauchi, Queuñapampa and Huancacalla Chico have been surveyed to determine the actual state of potato landrace, collective knowledge, potential threats of agrobiodiversity and to establish a long term monitoring system. It was registered by focus groups familiar (n=61). The results provide us information systematization of landraces of potatoes to prepare a master list that can be contrasted with genetic information. Based on farmer's perception in all the communities it was identified 42 landraces with 71 synonyms; 13 threatened landraces, 8 conservation dependant landraces and 3 no risk landraces. The methodologies used to contributing to data base for monitoring of landraces of potatoes should be applicable to other landscapes on similar conditions.

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In Vitro Bioaccessibility and Bioavailability of Iron from Potatoes with Varying Vitamin C, Carotenoid, and Phenolic Concentrations

In Vitro Bioaccessibility and Bioavailability of Iron from Potatoes with Varying Vitamin C, Carotenoid, and Phenolic Concentrations | Articles Published by CIP Staff | Scoop.it
International Potato Center (CIP)'s insight:

Andre, C.M.; Evers, D.; Ziebel, J.; Guignard, C.; Hausman, J.F.; Bonierbale, M.; Felde, T. zum; Burgos, G. 2015. In vitro bioaccessibility and bioavailability of iron from potatoes with varying Vitamin C, carotenoid, and phenolic concentrations. Journal of Agricultural and Food Chemistry. (USA). ISSN 0021-8561. 63(41):9012-9021.

The purpose of this study was to compare the in vitro iron availability from diverse iron biofortified International Potato Center (CIP) potato clones grown in the Peruvian Andes and, thereby, to provide key information to breeders seeking to increase bioavailable iron from potato.

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