publication
Assessment of genetic diversity among African cassava Manihot esculenta Grantz accessions resistant to the cassava mosaic virus disease using SSR markers
International Institute of Tropical Agriculture (IITA)
Abstract
A study was conducted to determine the extent of genetic diversity among African cassava (Manihot esculenta Crantz) accessions resistant to the cassava mosaic virus disease (CMD), using simple sequence repeat (SSR) markers. The accessions included a breeding stock (clone 58308), five improved lines, 62 CMD resistant and…
publication
Associations between Common Variants in Iron-Related Genes with Haematological Traits in Populations of African Ancestry
International Institute of Tropical Agriculture (IITA)
Abstract
Background Large genome-wide association (GWA) studies of European ancestry individuals have identified multiple genetic variants influencing iron status. Studies on the generalizability of these associations to African ancestry populations have been limited. These studies are important given interethnic differences in iron status and the…
publication
Breeding for Enhanced ?-Carotene Content in Cassava: Constraints and Accomplishments
International Institute of Tropical Agriculture (IITA)
Abstract
This review presents an overview of the importance, constraints, and prospects on different aspects of cassava (Manihot esculenta crantz) breeding for enhanced micronutrient level, including carotenoids (precursors for provitamin-A) and especially beta-carotene. Early cassava-breeding efforts concentrated on crop yield, dry matter, and disease resistance, which are farmer-preferred…
publication
Contributions of in-vitro biology to cassava improvement
International Institute of Tropical Agriculture (IITA)
Abstract
Cassava (Manihot esculenta Crantz) is a tough and productive survival crop of smallholder farmers in the tropics. It is often grown where other crops fail. Research can make important contribution to food security and economic development in cassava-growing areas. This can be enhanced through in-vitro propagation methods for this crop, due to its slow vegetative propagation. For useful biotechnology innovations to…
publication
Genetic diversity of Enterolobium cyclocarpum in Colombian seasonally dry tropical forest: implications for conservation and restoration
Bioversity International (Bioversity International)
https://hdl.handle.net/10568/78436
Publication year
2017
Authors
Thomas, E.
Gil Tobon, C.
Gutiérrez Artunduaga, Janneth Patricia
Alcázar Caicedo, Carolina
Moscoso Higuita, L.G.
Becerra López Lavelle, Luis…
publication
Gigwa v2—Extended and improved genotype investigator
Bioversity International (Bioversity International)
https://hdl.handle.net/10568/103462
Abstract
The study of genetic variations is the basis of many research domains in biology. From genome structure to population dynamics, many applications involve the use of genetic variants. The advent of next-generation sequencing technologies led to such a flood of data that the daily work of scientists is often more focused on data management than data analysis. This mass…
publication
Phosphorus benefits from grain-legume crops to subsequent maize grown on acid soils of southern Cameroon
International Institute of Tropical Agriculture (IITA)
Abstract
We conducted field experiments over 2 years on two acid soils of southern Cameroon to test whether efficient uptake and use of phosphorus (P) from less available sources by grain legume genotypes could benefit subsequent rotational maize. We grew two crops each year. For the first crop we grew 4 genotypes of soybean and of cowpea, plus maize. For the second crop we…
publication
Agronomy
International Institute of Tropical Agriculture (IITA)
Abstract
The results of regional trials for promising cassava var. under uniform improved technology are given. Trials were conducted in Media Luna, Chigorodo, Carimagua, Rio Negro, San Martin, CIAT- Palmira, CIAT-Quilichao, and Caicedonia. In 7 of the 8 sites, var. M COL 1684, CM 342-55, and CM 489-1 outyielded the best local clones. Var. M COL 1468, M COL 1684, and M COL 22 tested over 45, 40, and 40 cycles, resp. have produced weighted av. yields of 29.1, 30.8, and 22…
publication
Effect of crop rotation and nitrogen fertilization on yield and nitrogen efficiency in maize in the northern Guinea savanna of Nigeria
International Institute of Tropical Agriculture (IITA)
Abstract
Two crop rotation cycles were evaluated to determine the effect of cropping systems and N
fertilization on the yield and efficiency of N in maize. Maize was grown on plots which had previously
supported monocrops of two genotypes each of soybean (TGx 1448-2E and SAMSOY-2) and cowpea
(IT 96D-724 and SAMPEA-7),…
publication
CHALLENGES AND LESSONS WHEN USING FARMER KNOWLEDGE IN AGRICULTURAL RESEARCH AND DEVELOPMENT PROJECTS IN AFRICA
International Institute of Tropical Agriculture (IITA)
Abstract
Farmer participatory research (FPR) approaches are now considered mainstream and are especially applicable for developing appropriate technology options in complex, diverse and risk-prone regions, where local adaptations are crucial. Although the advantages of using farmer knowledge to guide scientific research are numerous and well documented, the challenges…
publication
Benefits and potential use of arbuscular mycorrhizal fungi (AMF) in banana and plantain (Musa spp.) systems in Africa
International Institute of Tropical Agriculture (IITA)
Publication year
2010
Full Citation
J.* Jefwa et al., 'Benefits and potential use of arbuscular mycorrhizal fungi (AMF) in banana and plantain (Musa spp.) systems in Africa', Acta Horticulturae(879), pp.479-486, 2010
Publication Type
Scientific Publication…
publication
Evaluation of application timing in fertilizer micro-dosing technology on millet production in Niger, West Africa
International Institute of Tropical Agriculture (IITA)
Abstract
Micro-dosing technology has been developed by the International Crops Research Institute for the Semi-Arid Tropics (ICRISAT) and its partners to help subsistence farmers in the Sahel improve inorganic fertilizer application. However, the ICRISAT's recommendations regarding fertilizer application through this technology are only applicable at sowing and…
publication
Effect of planting technique and amendment type on pearl millet yield, nutrient uptake, and water use on degraded land in Niger
International Crops Research Institute for the Semi-Arid Tropics (ICRISAT)
Abstract
Due to increased population pressure and limited availability of fertile land, farmers on desert fringes increasingly rely on marginal land for agricultural production, which they have learned to rehabilitate with different technologies for soils and water conservation. One such method is the indigenous zai technique used in…
publication
Rust
International Crops Research Institute for the Semi-Arid Tropics (ICRISAT)
Abstract
Rust is an economically important disease in most peanut producing countries of the world and causes substantial yield losses, particularly if the crop is also attacked by the leaf spot pathogens Cercospora arachidicola and Cercosporidium personatum
Publication year
2014
Authors
J.R. Stavely
Marcial A. Pastor Corrales…
publication
Priority regions for research on dryland cereals and legumes
International Crops Research Institute for the Semi-Arid Tropics (ICRISAT)
Abstract
Dryland cereals and legumes are important crops in farming systems across the world. Yet they are frequently neglected among the priorities for international agricultural research and development, often due to lack of information on their magnitude and extent. Given what we know about the global distribution of dryland cereals and legumes, what regions should be high priority for research…
