Edhemuino Mary

University of Ibadan(M.Sc.)

Research Topic

Morphological and molecular characterization, interspecific hybridization of irradiated Vigna vexillata (L.) A. Rich. and Vigna unguiculata (L.) Walp.

Research Description

Major production limitations of cowpea in the West African region are flowering and post-flowering insect pests, more especially flower thrips (Megalurothips sjostedti), cowpea pod borer (Maruca) and pod-sucking bugs (Clavigralla spp.). These pests cause several reductions in grain yields, commonly in the range of 50–95% and complete grain loss is not uncommon. Resistance to these pests has been established mainly in wild non-cultivated Vigna species, such as V. vexillata. Interspecific crossing has been attempted between V. unguiculata and V. vexillata but failed due to cross incompatibility. Mutagenesis can be used to break this barrier thereby creating new genetic variability that will be cross compactible for cowpea improvement.


Nwachukwu Chidinma

University of Ibadan(M.Sc.)

Research Topic

Sex Determination of yam clones (Dioscorea rotundata) through application of single nucleotide polymorphic (SNP) DNA markers.

Research Description

Yam (Dioscorea spp.) is one of the principal root crops which highly contribute into Nigerian economy. It also highly contributes to food security in many countries particularly in West Africa (for over 300 million people) where the production is highly concentrated. Previous work conducted by IBRC in Japan has revealed the physical position of some markers relative to the flower and the sex. Therefore, the purpose of my research is to use molecular markers especially SNPs to predict at early stage the sex of some yam clones in Dioscorea rotundata species. This study will highly impact yam breeding community by providing with important information on sex determination of Dioscorea rotundata using marker assisted selection.


Ige Gbemisola

Pan African University Life and Earth Sciences Institute (PhD )

Research Topic

GENETIC ANALYSIS AND MOLECULAR MAPPING OF RESISTANCE GENES TO ASIAN SOYBEAN RUST IN SOYBEAN [Glycine max (L.) Merr.]

Research Description

Soybean (Glycine max (L.)) is a major source of vegetable oil and high quality protein in the World (Tukamuhabwa et al., 2012) which serves as food for man and feed for livestock. The combination of improved soil properties and the ability to break lifecycles of pests and diseases makes soybean an ideal crop in cereal rotation programmes (Waymark, 1997). Thus any constraints on or threats to soybean production have great potential for eroding the food and nutrition security of millions of people, especially in developing countries. Soybean rust caused by Phakopsora spp. fungi (Order: Uredinales; Family: Melampsoraceae) causes most damage, with potential yield losses of up to 90% in heavy infestations (Hartman et al., 1999). The use of resistant variety to rust is the most feasible solution because it is simple to manage and friendly to the environment. Knowledge of general combining ability (GCA) of parental lines is particularly helpful for predicting genetic gains in a breeding program (Falconer and Mackay, 1996). Also, Genetic information helps breeders to deploy appropriate methods for crop improvement


Eyinla Tolu

University of Ibadan(PhD)

Research Topic

Starch Digestibility and Glycemic Indices of Yam and Cassava Products

Research Description

With the existence of several varieties of Cassava and White Yam. There is a big question of their possible varied impact on Food consumption. More important is their influence on our diet which has been highlighted as a risk factor in the development of non-communicable diseases(NCDs) in Sub-Saharan Africa. Are there varieties that could manage individuals suffering from Diabetes or even prevent the disease from reaching pandemic levels.I look forward to providing answers through my research!


AFOLABI FOLASADE

Ladoke Akintola University of Technology(PhD)

Research Topic

Effect of Fertilizer Application on the Quality of Yam (Dioscorea rotundata spp)

Research Description

Nigeria is the highest producer of yam in the world. Yam has the potential of enhancing food security as well as wealth creation. However, its yield is threatened by declining soil fertility as it requires fertile soil to thrive. Fertilizer is one of the crucial input for improvement of agricultural productivity but yam farmers are skeptical of its usage because they opine that it exerts negative effects on the quality of the tuber. My research focus is to use different fertilizer to cultivate yam, determine its effects on yam food products, starch and other properties to bridge the demand and supply for yam.


Sanni Afolabi

University of Ibadan (PhD)

Research Topic

Genetic Diversity in Cowpea Mini core collection using Morphological and Molecular Markers

Research Description

I am carrying out a detail morphological, agronomic and Molecular characterisation of cowpea mini core collection of 373 accession comprising both Landraces and Breeder line cowpea accession.


Darkwa Kwabena

Pan African University, Ibadan, Nigeria (PhD)

Research Topic

Linkage analysis, association mapping and prediction of breeding values of quantitative traits in yam (Dioscorea spp.)

Research Description

The objectives of the study are to: (1) detect genetic variation in collections and a bi-parental mapping population (2) identify genomic regions and SNPs linked to natural variations for quantitative traits in IITA’s regional yam breeding collections through genome-wide association studies (GWAS) (3) identify QTL(s) for tuber yield, quality traits, anthracnose and yam mosaic virus in a bi-parental mapping population through linkage mapping (4) Determine breeding value in parents and progenies of a D. rotundata early generation breeding population (5) Dissect the nature of trait association in different population of yams.


Kamanda Isata

WACCI.university of Ghana.Legon.Accra.(PhD)

Research Topic

GENETIC IMPROVEMENT OF ROOT YIELD AND NUTRITIONAL QUALITY OF CASSAVA (Manihot esculenta Crantz) IN SIERRA LEONE

Research Description

Cassava storage root is a major staple. However, the tuber is poor in nutrients especially micronutrients. The study was conducted to improve the nutritional status of cassava with farmers’ preferred traits in Sierra Leone. The specific objectives were i) to assess adoption challenges, perception and preferences for provitamin A cassava among cassava value chain actors in Sierra Leone. ii) to estimate genetic diversity within provitamin A cassava germplasm using morphological, molecular tools and I-check device for establishing a core collection in Sierra Leone. iii) to determine performance and stability of total carotene content and dry matter of selected provitamin A cassava accessions across environments.vi) to characterize F1 progenies for total carotenoid, iron and zinc and protein content using biochemical tool. v) to estimate the combining ability of 12 cassava parents and their F1 progenies for mealiness, dry matter, number of roots and fresh root yield.


Muhammad Ali

University of Maiduguri (M.Sc.)

Research Topic

Effect of Phosphorus and intra-row spacing on performance of Groundnut (Arachis hypogaea L.) in Northern Guinea Savanna of Nigeria.

Research Description

Due to the economic importance of groundnut lower levels of Phosphorus in the Northern Guinea Savanna of Nigeria, the research was aimed at developing strategies that will improve yield and better quality of groundnut using improve varieties. Eg. SAMNUT 22.


Isa Muhammad Nurudeen

Ahmadu Bello University,Zaria (M.Sc.)

Research Topic

Characterization and evaluation of indigenous rhizobia of cowpea for biological nitrogen fixation and improved crop yield in the Nigerian savanna

Research Description

Bioprospection was conducted across Sudan, northen Guinea and southern Guinea savanna of Nigeria to trap indigenous rhizobia of cowpea and to evaluate the isolates for biological nitrogen fixations on various cowpea genotype to get elite strain for commercial cowpea inoculant production in Nigeria.

Contact Us

  • Address: IITA Headquarters, PMB 5320, Oyo Road, Ibadan 200001, Oyo State, Nigeria

  • Phone: (+234)806-435-3738

  • Email: iita-iarsaf@cgiar.org