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A study was carried out on Kersting's groundnut, which was collected from fourteen communities in Northern Ghana, to evaluate the growth and yield potential of sixteen genotypes having three seed colours white, black and mottled. Some growth parameters were taken, and among these parameters, only leaf area index showed significant differences among colour types (P<0.05) and genotypes (P<0.05). In general, white-coloured and mottled genotype seeds performed better than black seeded genotypes. Pod number and nodule number per plant were not significantly different among the genotypes. However, 100-seed weight and seed yield showed variation among colour types and also genotypes. Yields ranging from 192 to 688 kg/ha were obtained. The relatively good performance exhibited by white and mottled seeded genotypes and variation in yield offer opportunities for varietal improvement of the crop and required research attention.
Agriculture and Biology Journal of North America
Morphological variation in Kersting’s groundnut (Kerstigiella geocarpa Harms) landraces from northern Ghana2010 •
2018 •
Kersting's groundnut ( Harms) is a neglected, endangered food and medicinal legume in Africa. Efforts to harness the benefits of the legume-rhizobia symbiosis have focused on few major legumes to the neglect of underutilized ones such as Kersting's groundnut. This study assessed plant growth, N-fixed and grain yield of five Kersting's groundnut landraces in response to inoculation with strain CB756 at two locations in the Northern Region of Ghana. The transferability of cowpea-derived Simple Sequence Repeat (SSR) markers to Kersting's groundnut was also assessed. The symbiotic results revealed significant variation in nodulation, shoot biomass, δN, percent N derived from fixation, amount of N-fixed and soil N uptake. The cross-taxa SSR primers revealed monomorphic bands with sizes within the expected range in all the Kersting's groundnut landraces. The results of the aligned nucleotide sequences revealed marked genetic variability among the landraces. Kersting...
Frontiers in Nutrition
Metabolite Fingerprinting of Kersting's Groundnut [Macrotyloma geocarpum (Harms) Maréchal Baudet] Seeds Using UPLC-qTOF-MS Reveals the Nutraceutical and Antioxidant Potentials of the Orphan LegumeThe identification and subsequent quantification of phenolic compounds in plants is the first step toward harnessing their associated nutritional and health benefits. Due to their diverse phenolic compound compositions, grain legumes are known for their high nutritional and health values. The aim of this study was to assess the inter-variations in chemical composition, phytochemical content, and antioxidant capacity of seed extracts from eight Kersting's groundnut [Macrotyloma geocarpum (Harms) Marechal & Baudet] landraces. The chemical profiles were evaluated using UPLC-qTOF-MS. Total phenolics and flavonoids content were determined by the Folin-Ciocalteu and aluminum chloride methods, respectively. The antioxidant capacities in the forms of DPPH and ABTS were evaluated using spectrophotometric methods. Principal component analysis was used to define similarities/differences between the landraces. Based on untargeted metabolomics analysis, 57 metabolites were identified, with p...
Frontiers in Sustainable Food Systems
Profiling Cultivars Development in Kersting's Groundnut [Macrotyloma geocarpum (Harms) Maréchal and Baudet] for Improved Yield, Higher Nutrient Content, and Adaptation to Current and Future Climates2021 •
Kersting's groundnut [Macrotyloma geocarpum (Harms.) Maréchal and Baudet], Fabaceae is an important source of protein and essential amino acids. As a grain legume species, it also contributes to improving soil fertility through symbiotic nitrogen fixation. However, the crop is characterized by a relatively low yield (≤500 kg/ha), and limited progress has been made so far, toward the development of high-yielding cultivars that can enhance and sustain its productivity. Recently, there was an increased interest in alleviating the burdens related to Kersting's groundnut (KG) cultivation through the development of improved varieties. Preliminary investigations assembled germplasms from various producing countries. In-depth ethnobotanical studies and insightful investigation on the reproductive biology of the species were undertaken alongside morphological, biochemical, and molecular characterizations. Those studies revealed a narrow genetic base for KG. In addition, the self-pol...
Pulses play important roles in providing proteins and essential amino-acids, and contribute to soils’ nutrients cycling in most smallholder farming systems in Sub-Saharan Africa (SSA). These crops can be promoted to meet food and nutrition security goals in low-income countries. Here, we investigated the status of Kersting’s groundnut (Macrotyloma geocarpum, Fabaceae), a neglected pulse in West Africa. We explored its diversity, the production systems, the production constraints and farmers’ preferences in Burkina Faso and Ghana. Focus groups and semi-structured interviews were conducted in 39 villages with 86 respondents grouped in five sociolinguistic groups. Our results indicated that Macrotyloma geocarpum was produced in three cultivation systems: in the first system, farmers grew Kersting’s groundnut in fields, mostly on mounds or on ridges; in the second system, farmers grew it as field border; and in the third system, no clear tillage practice was identified. The main constra...
2020 •
Understanding the mechanisms governing complex traits variation is a requirement for efficient crop improvement. In this study, the molecular characterization, marker-trait associations and the possibility for genomic selection in a collection of 281 Kersting’s groundnut accessions were carried out. The diversity panel was phenotyped using an Alpha lattice design with two replicates in two contrasting environments. Accessions were genotyped using genotyping by sequencing technology. Genome-wide association analyses were performed between single nucleotide polymorphism markers and yield-related traits across tested environments. SNP markers were used to calculate the observed (Ho) and expected heterozygosity (He), and the total gene diversity (Ht). Genetic differentiation among accessions across ecological regions of origin was analysed. Our results revealed 493 quality SNPs of which 113 had a minor allele frequency>0.05, a total gene diversity of 0.43 and average Ho and He values of 0.04 and 0.22, respectively. Four clusters, highly differentiated by seed coat colour (Fst = 0.79), were identified. The population structure analysis showed two subpopulations with high differentiation across ecological regions (Fst = 0.37). The GWAS revealed 10 significant marker-trait associations, of which six SNPs were consistent across environments. The genomic selection through cross-validation showed moderate to high prediction accuracies for leaflet length, seed dimension traits, 100 seed weight, days to 50% flowering and days to maturity. This demonstrates the existence of genetic variability within Kersting’s groundnut and shows the potential for the improvement of the species. The findings also provide a first insight into the phenotype-to-genotype relationships in Kersting’s groundnut, using SNP marker
South African Journal of Botany
Reproductive biology, phenology, pollen viability and germinability in Kersting's groundnut (Macrotyloma geocarpum (Harms) Mar echal & Baudet, Fabaceae2021 •
Knowledge gap on the reproductive biology of orphan crops is a major challenge to their cultivar development and genetic improvement. This study described the reproductive organs and phenology, assessed receptivity of stigma versus anther dehiscence, and examined pollen viability and germination in Kersting's groundnut. Experiments were conducted on nine morphotypes in a randomized complete block design with three replications in a screenhouse. Phenological observations were made on 1026 flower buds. Anther dehiscence was determined through microscopic observations while receptivity of the stigma was assessed using the hydrogen peroxide test. Pollen viability was assayed using histochemical staining. In vitro germination and pollen tube growth were assessed for up to 72h. Flowers were bisexual and incompletely protogynous, and spontaneous self-pollination was favoured by style bending. Flowering and fruiting were classified into six developmental stages each. Timing of all stages differed significantly (P<0.001) among morphotypes. The stigma was receptive 1-2 days before anther dehiscence and remained so until each flower wilted. Anthesis started 3 days from young bud appearance and lasted between 2À4 days depending on the morphotype. Pollen viability rates were very high (88À98%) and differed among morphotypes (P<0.001). Pollen germination rates were low (8À37%) and varied among morphotypes and anthesis stages (P<0.05). Pollen tube growth varied significantly among morphotypes, anthesis stages and incubation time. The morphotype ZHLA-2 exhibited the highest reproductive vigour and could be recommended as pollen donor for hybridization. The study provides information on the best time and stage for emasculation and is expected to help breeders optimise a hybridisation protocol.
Background: Pigeonpea is a multipurpose food legume that contributes to food security in Benin. However, its production declined and some landraces are being threatened of disappearance. Previous investigations on pigeonpea in Benin have been restricted to South and Central Benin. Therefore, pigeonpea diversity in northern is still unknown. This study aimed to have a better knowledge of pigeonpea genetic diversity, for its promotion and valorization.Methods: 500 producers of pigeonpea belonging to thirteen sociolinguistic groups were selected through 50 villages. Data were collected using methods and tools of participatory research appraisal. Folk nomenclatures, taxonomy of pigeonpea and seed system were investigated. The distribution and extent of pigeonpea landraces were evaluated using Four Square Analysis method. A comparative analysis of pigeonpea uses categories, production systems, pigeonpea production constraints, famers’ preference criteria and participative evaluation for ...
2020 •
Journal of Plant Breeding and Crop Science
Agro-morphological characterization of pigeonpea (Cajanus cajan L. Millspaugh) landraces grown in Benin: Implications for breeding and conservation2019 •
Symbiosis (Philadelphia, Pa.)
Assessing host range, symbiotic effectiveness, and photosynthetic rates induced by native soybean rhizobia isolated from Mozambican and South African soils2018 •
1998 •
2014 •
Frontiers in Sustainable Food Systems
Evaluation of Protein and Micronutrient Levels in Edible Cowpea (Vigna Unguiculata L. Walp.) Leaves and Seeds2002 •
Current Journal of Applied Science and Technology
Application of Phosphorus and Calcium to Improve Physiological Response of Groundnut (Arachis hypogaea L.)International Journal of Pest …
Farmers' knowledge, perceptions and management of the gall-forming wasp, Leptocybe invasa (Hymenoptera: Eulophidae), on Eucalyptus species in Uganda2007 •
Brazilian Journal of Biological Sciences
Phytoremediation potential of Amaranthus hybridus L. (Caryophyllales: Amaranthaceae) on soil amended with brewery effluentBMC Microbiology
Symbiotic functioning and bradyrhizobial biodiversity of cowpea (Vigna unguiculata L. Walp.) in Africa2010 •
CPUT Theses & Dissertations
… flavonoid concentration in cowpea, genotypes and the effect of plant density on growth, n2 fixation and rhizosphere phosphatases and grain yield of cowpea …2009 •
CPUT Theses & Dissertations
Seed flavonoid concentration in cowpea, genotypes and the effect of plant density on growth, n2 fixation and rhizosphere phosphatases and grain yield of …2012 •
2014 •
Recent Advances in Grain Crops Research [Working Title]
Neglected and Underutilized Legume Crops: Improvement and Future ProspectsAsian Journal of Advances in Agricultural Research
Productive Impact of Residual Nutrients (N and P) in Maize and Soybean Rotation2019 •
Journal of Science and Technology (Ghana)
Effect of Spacing on Growth and Yield of Five Bambara Groundnut (Vigna Subterranea (L) Verdc.) Landraces2012 •
Biology and Fertility of Soils
Symbiotic N nutrition, C assimilation, and plant water use efficiency in Bambara groundnut (Vigna subterranea L. Verdc) grown in farmers’ fields in South Africa, measured using 15N and 13C natural abundance2014 •
Agricultural Sciences
Assessment of Seed and Tuber Production Potential in Varieties of Sphenostylis stenocarpa (Africa Yam Bean)2019 •
2019 •
1999 •
2021 •