Cadmium uptake and distribution in African indigenous leafy vegetable species
- Authors
- Chicaiza de la Cruz, Omar David
- Format
- MasterThesis
- Status
- publishedVersion
- Description
Despite all disadvantages previously mentioned, AIV continue to be an important chance AIV could offer (Uusiku et al., 2010), the ability to thrive under adverse conditions (e.g.,heat, drought, diseases, pests, poor soils) (Achigan-Dako et al., 2014), the availability attimes of scarcity of other vegetables (e.g., exotic, commercially importance), the requirement of less inputs (e.g., chemical fertilizers and pesticides) and resources (Dweba and Mearns, 2011), the affordability in local markets (Eyzaguirre and Chweya, 1999) as well as the income generation for communities (Chweya and Mnzava, 1997). In this way, both support and cooperation of research institutions and organizations play a key role in the generation, transfer and implementation of knowledge regarding the possibilities that AIV offer for food security and development (Achigan-Dako et al., 2014). For example, ?HORTINLEA? (Horticultural Innovations and Learning for Improved Nutrition and Livelihood in East Africa) is a multidisciplinary research project that ddresses the issue about food security in East Africa. So, African and German research institutions and universities such as ?Humboldt Universit?t zu Berlin? work together with the objective of achieving the improvement of the production, quality and consumption of indigenous vegetable species. As part of HORTINLEA, the subproject ?Assessment of Crop-Specific Carbon and Mineral Element Fluxes for Sustainable Soil Fertility Management in Horticultural Productions Systems (SP3)? aims to provide knowledge on the current status of soil fertility management and to identify possible constraints for vegetable production in the peri-urban area of Nairobi due to mineral nutrients, soil organic matter (SOM) contents and heavy metals (HM) (HORTINLEA, 2014). Into SP3 is inserted the present thesis whose principal objective is the characterization of Cd accumulation in plant organs of various AIV species, and the assessment whether species differences are related to Cd availability in rhizosphere, Cd uptake into roots and/or Cd translocation to the shoot. The following questions will be addressed in this work: 1) Differ AIV in their response to increasing levels of soil Cd contamination with regard to Cd concentrations in roots and edible organs (leafs, stems)? 2) Differ N2-fixing and NO -supplied Cowpea plants with regard to Cd concentrations in roots and edible organs (leafs, stems)? 3) Are differences in plant Cd concentrations among AIV species and/or between N2-fixing and NO3-supplied Cowpeas related to pH and Cd availability in rhizosphere soil? 4) Are Cd concentrations in edible organs reduced by cooking?
- Publication Year
- 2016
- Language
- eng
- Topic
- HORTICULTURA
NUTRICI?N VEGETAL
AGRICULTURA
ALIMENTACI?N HUMANA
TRANSFORMACI?N DE ALIMENTOS
CALIDAD DE ALIMENTOS
INTOXICACI?N POR METALES PESADOS
CADMIO
- Repository
- Repositorio SENESCYT
- Rights
- openAccess
- License