A5036939289- Agricultural pest management studies
- Genetics and Plant Breeding
- Genetic and Environmental Crop Studies
- Insect-Plant Interactions and Control
- Insect Resistance and Genetics
- Insect Pest Control Strategies
- Plant pathogens and resistance mechanisms
- Plant Genetic and Mutation Studies
- Crop Yield and Soil Fertility
- Genetic Mapping and Diversity in Plants and Animals
- Plant Micronutrient Interactions and Effects
- CRISPR and Genetic Engineering
- GABA and Rice Research
- Legume Nitrogen Fixing Symbiosis
Department of Research and Specialist Services
2018-2024
Scientific and Industrial Research and Development Centre
2024
University of the Free State
2020-2022
University of Zimbabwe
2018
Abstract Fall armyworm [ Spodoptera frugiperda (J.E. Smith); FAW] invasion has exacerbated maize ( Zea mays L.) crop yield losses in sub‐Saharan Africa (SSA), already threatened by other stresses, especially those that are climate‐change induced. The FAW is difficult to control, manage, or eradicate, because it polyphagous and trans‐boundary, multiplies fast, a short life cycle migrates easily, lacks the diapause growth phase. In this study, its impact was reviewed, as well past present...
Abstract Fostering a culture of continuous improvement through regular monitoring genetic trends in breeding pipelines is essential to improve efficiency and increase accountability. This the first global study estimate across International Maize Wheat Improvement Center (CIMMYT) tropical maize eastern southern Africa (ESA), South Asia, Latin America over past decade. Data from total 4152 advanced trials 34,813 entries, conducted at 1331 locations 28 countries globally, were used for this...
Fall armyworm [Spodoptera frugiperda (J./E. Smith); FAW] is negatively impacting sustainable maize production, particularly in smallholder farming systems sub-Saharan Africa. Two sets of germplasm (commercial cultivars and experimental hybrids, local exotic inbred lines) were evaluated under managed natural FAW infestation to identify tolerant material with superior grain yield performance. Significant genotypic effects on foliar damage, ear observed. Commercial significantly more affected...
Understanding the genetic basis of traits economic importance under drought stressed and well-watered conditions is important in enhancing gains dry beans ( Phaseolus vulgaris L.). This research aims to: (i) identify markers associated with agronomic physiological for tolerance (ii) drought-related putative candidate genes within mapped genomic regions. An andean middle-american diversity panel (AMDP) comprising 185 genotypes was screened field two successive seasons. Agronomic traits, viz...
Monitoring genetic gains within breeding programs is a critical component for continuous improvement. While several national in Africa have assessed gain using era studies, this study the first to use two decades of historical data estimate trends program. The objective was assess final stages Zimbabwe’s Department Research & Specialist Services maize pipeline between 2002 and 2021. Data from 107 intermediate 162 advanced variety trials, comprising 716 398 entries, respectively,...
Mutation breeding has been used successfully worldwide to generate crop varieties with various traits, including pest resistance. Before any mutation is initiated, radio-sensitivity tests need be conducted determine optimum doses for mutagenesis. In this study, were on three maize (Zea mays L.) genotypes six gamma irradiation doses. Highly significant effects of mutagenesis days seedling emergence, emergence percentage, and height observed. Regressing gamma-ray estimated the lethal dose 50...
Abstract Deploying maize varieties with fall armyworm ( Spodoptera frugiperda [J.E. Smith]; FAW) resistance, desirable product profiles (PPs) and climate resilience is fundamental for food economic security in sub‐Saharan Africa (SSA). This study reviewed identified challenges opportunities effective accelerated breeding of demand‐led hybrids FAW resistance adaptation to the diverse agro‐ecologies SSA. Lessons were drawn on improving efficiency through adequate genetic variation delivered...
Cowpea (Vigna unguiculata [L.] Walp) is highly nutritious and fits well in smallholder crop-livestock farming systems of sub-Saharan Africa. Newly developed cowpea varieties need to be assessed for grain yield performance stability across environments. Furthermore, a comprehensive understanding the test environments crucial rationalising resources breeding programmes. The objective this study was identify high yielding stable genotypes, determine ideal (representative discriminating) testing...
Fall armyworm (Spodoptera frugiperda (J.E. Smith); FAW)-resistant cultivars and breeding lines have been identified in sub-Saharan Africa. However, these genotypes not evaluated for their stability across environments with natural FAW infestation. The objectives of this study were to: (i) identify hybrids/open pollinated varieties combining high grain yield (GYD) infestation, (ii) select maize inbred GYD stable resistance, (iii) the most discriminating performance foliar damage (FFAWD) under...
Abstract Understanding the genetic basis of traits economic importance under drought stress (DS) and well-watered (NS) conditions is important in enhancing gains dry beans ( Phaseolus vulgaris L.). This research aims to: (i) identify markers associated with agronomic physiological for tolerance (ii) drought-related putative candidate genes within mapped genomic regions. An Andean Mesoamerican diversity panel (AMDP) comprising 185 genotypes was screened field two successive seasons. Agronomic...
Abstract Knowledge of the genetic basis navy bean ( Phaseolus vulgaris L.) performance under drought stress (DS) is important for planning appropriate breeding and selection strategies in DS environments. Twenty-eight F 2 progenies generated from an 8 x half-diallel mating design were evaluated to determine combining ability effects mode gene action grain yield (GYD) attributing traits non-stressed (NS) conditions. The experiments conducted two locations a 6 square lattice with replications...