Key factors influencing food security of smallholder farmers in Tanzania and the role of cassava as a strategic crop

Reincke, K.; Vilvert, Elisa; Faße, Anja; Graef, Frieder; Sieber, Stefan; Lana, Marcos

doi:10.1007/s12571-018-0814-3

Cited by 68 publications

(43 citation statements)

References 27 publications

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“…Millions of tropical households depend on cassava (Manihot esculenta Cranz) for food and economic security [1,2]. Farmers cultivate cassava for its starchy storage roots and utilize semi-woody stem cuttings as propagules to establish the next cropping cycle.…”

Section: Introductionmentioning

confidence: 99%

Transgenic overexpression of endogenous FLOWERING LOCUS T-like gene MeFT1 produces early flowering in cassava

et al. 2020

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Endogenous FLOWERING LOCUS T homolog MeFT1 was transgenically overexpressed under control of a strong constitutive promoter in cassava cultivar 60444 to determine its role in regulation of flowering and as a potential tool to accelerate cassava breeding. Early profuse flowering was recorded in-vitro in all ten transgenic plant lines recovered, causing eight lines to die within 21 days of culture. The two surviving transgenic plant lines flowered early and profusely commencing as soon as 14 days after establishment in soil in the greenhouse. Both transgenic lines sustained early flowering across the vegetative propagation cycle, with first flowering recorded 30-50 days after planting stakes compared to 90 days for non-transgenic controls. Transgenic plant lines completed five flowering cycles within 200 days in the greenhouse as opposed to twice flowering event in the controls. Constitutive overexpression of MeFT1 generated fully mature male and female flowers and produced a bushy phenotype due to significantly increased flowering-induced branching. Flower induction by MeFT1 overexpression was not graft-transmissible and negatively affected storage root development. Accelerated flowering in transgenic plants was associated with significantly increased mRNA levels of MeFT1 and the three floral meristem identity genes MeAP1, MeLFY and MeSOC1 in shoot apical tissues. These findings imply that MeFT1 encodes flower induction and triggers flowering by recruiting downstream floral meristem identity genes. OPEN ACCESS Citation: Odipio J, Getu B, Chauhan RD, Alicai T, Bart R, Nusinow DA, et al. (2020) Transgenic overexpression of endogenous FLOWERING LOCUS T-like gene MeFT1 produces early flowering in cassava. PLoS ONE 15(1): e0227199.

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Section: Introductionmentioning

confidence: 99%

Transgenic overexpression of endogenous FLOWERING LOCUS T-like gene MeFT1 produces early flowering in cassava

et al. 2020

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“…Many studies have shown that cassava can contribute to enhancement of food security status of farming households (Muhammad-Lawal, Omotesho, & Oyedemi, 2013;Widyanti et al, 2014, Ibok, Idiong, Brown, Okon, & Okon, 2014Saediman, Limi, Rosmawaty, Arimbawa, & Indarsyih, 2016;Reincke et al, 2018). However, studies that particularly focus on food security of poor cassava-growing households are lacking.…”

Section: Introductionmentioning

confidence: 99%

Food Security Status of Households in a Cassava-Growing Village in Southeast Sulawesi, Indonesia

Saediman¹,

Aisa²,

Zani³

et al. 2019

jae

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The study assessed the food security status of poor households and contribution of cassava in their diets. Sixty-four cassava growers were selected from a Southeast Sulawesi cassava growing village using simple random sampling method. The United States Adult Food Security Survey Module was adopted in assessing the food security status of selected households. Data were analyzed qualitatively and using descriptive statistics. Results showed that a great majority (81.3%) of households were food secure. Average consumption of cassava based foods of 4.1 days a week compared to only 2.9 days for rice clearly confirmed that cassava was a dominant source of food and thus had contributed positively to the high food security status of households in the area. In view of its suitability with the farming and local food system as well as its importance in strengthening food security, efforts should be exerted to promote production, processing, marketing and consumption of cassava as staple food. 202affirmative. The questionnaire items were modified to a 30-day reference period rather than 12 month reference period (Coleman-Jensen et al., 2018).

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“…Smallholder farmers provide over 70% of the food consumed in Sub-Saharan Africa. Hence, this category plays a decisive role in terms of facilitating food security on the local, national, and global levels [11,12]. For example, in Tanzania, agriculture accounts for 25% of gross domestic product and more than 80% of the workforce are employed in the sector [13].…”

Section: Introductionmentioning

confidence: 99%

Experimenting with RRI tools to Drive Sustainable Agri-Food Research: The SASS Case Study from Sub-Saharan Africa

et al. 2020

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The need to develop experimental tools for a responsible research and innovation (RRI) framework is relevant for managing research agendas and policy making that seriously take into account the complex conditions of innovation development (linked to multidisciplinarity and interaction processes) between the researchers and their fieldwork activities. The adoption of an RRI framework is even more important for multidisciplinary and complex issues, such as the agri-food system. In this context, the SASS (Sustainable Agri-food Systems for Sustainable Development (SASS) project represents a good example for verifying the application of the RRI strategy in a varied research group committed to the development of sustainable agri-food systems in Sub-Saharan Africa. The project, which involves more than 50 researchers from different fields of knowledge and theoretical backgrounds, showed the importance of the processes of reflection, re-driving, and convergence in the definition of research objectives and strategies. This process started by experimenting with new dedicated RRI tools in order to allow interactions between the researchers, including exchanging their experience in data collection and theoretical reflection development. With respect to this analysis, it was interesting to analyze how the RRI tools and strategies have been activated between researchers and different stakeholders, generating reflections capable of re-adapting the results towards shared and accessible innovation for the extended society. Following the discussion based on the description of the SASS-RRI agenda tools and following an internal verification given from an RRI-based web survey, this contribution provides new insights, in terms of tools and strategies, to promote and refine RRI approaches. This work underlines how RRI methods have promoted internal and external interactions to connect the research objectives towards a model of open innovation.

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Key factors influencing food security of smallholder farmers in Tanzania and the role of cassava as a strategic crop

Cited by 68 publications

References 27 publications

Transgenic overexpression of endogenous FLOWERING LOCUS T-like gene MeFT1 produces early flowering in cassava

Transgenic overexpression of endogenous FLOWERING LOCUS T-like gene MeFT1 produces early flowering in cassava

Food Security Status of Households in a Cassava-Growing Village in Southeast Sulawesi, Indonesia

Experimenting with RRI tools to Drive Sustainable Agri-Food Research: The SASS Case Study from Sub-Saharan Africa

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