Eric Manyasa
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View article: Validation of sorghum quality control (QC) markers across African breeding lines
Validation of sorghum quality control (QC) markers across African breeding lines Open
Sorghum [ Sorghum bicolor (L.) Moench] is a cereal crop of critical importance in the semi‐arid tropics, particularly in Africa where it is second only to maize ( Zea mays L.) by area of cultivation. The International Crops Research Instit…
View article: Exploring the sorghum race level diversity utilizing 272 sorghum accessions genomic resources
Exploring the sorghum race level diversity utilizing 272 sorghum accessions genomic resources Open
Due to evolutionary divergence, sorghum race populations exhibit significant genetic and morphological variation. A k-mer -based sorghum race sequence comparison identified the conserved k-mer s of all 272 accessions from sorghum and the r…
View article: An enabling environment for the national flour blending policy: An food systems analysis
An enabling environment for the national flour blending policy: An food systems analysis Open
A national flour blending policy is about to be implemented in Kenya. This requires maize flour (the country’s main staple) to be blended with at least 10 percent of either one or a composite of traditional crops, such as sorghum and mille…
View article: Genotypic Yield Stability of Wild and Landrace Sorghum Species Under Drought Stress and Striga Infestation
Genotypic Yield Stability of Wild and Landrace Sorghum Species Under Drought Stress and Striga Infestation Open
Recurring drought stress cycles and widespread striga (Striga hermonthica (Del.) Benth) infestations are two of the major constraints of sorghum production in sub-Saharan Africa (SSA) where they cause a crop loss of about 60 billion US dol…
View article: DeepVariant calling provides insights into race diversity and its implication for sorghum breeding
DeepVariant calling provides insights into race diversity and its implication for sorghum breeding Open
Due to evolutionary divergence, sorghum race populations exhibit vast genetic and morphological variations. A k-mer -based sorghum race sequence comparison identified the conserved k-mer s of all sorghum race accessions and the race-specif…
View article: Assessment of sorghum production constraints and farmer preferences for sorghum variety in Uganda: implications for nutritional quality breeding
Assessment of sorghum production constraints and farmer preferences for sorghum variety in Uganda: implications for nutritional quality breeding Open
Sorghum [Sorghum bicolor (L.) Moench] is the main food staple grain widely cultivated in sub-Sharan Africa including Uganda. There is a lack of current information on sorghum production constraints and varietal trait preferences in the maj…
View article: Genotypic Variation in Cultivated and Wild Sorghum Genotypes in Response to Striga hermonthica Infestation
Genotypic Variation in Cultivated and Wild Sorghum Genotypes in Response to Striga hermonthica Infestation Open
Striga hermonthica is the most important parasitic weed in sub-Saharan Africa and remains one of the most devastating biotic factors affecting sorghum production in the western regions of Kenya. Farmers have traditionally managed Striga us…
View article: Sorghum Pan-Genome Explores the Functional Utility for Genomic-Assisted Breeding to Accelerate the Genetic Gain
Sorghum Pan-Genome Explores the Functional Utility for Genomic-Assisted Breeding to Accelerate the Genetic Gain Open
Sorghum ( Sorghum bicolor L.) is a staple food crops in the arid and rainfed production ecologies. Sorghum plays a critical role in resilient farming and is projected as a smart crop to overcome the food and nutritional insecurity in the d…
View article: Sorghum pan-genome explores the functional utility to accelerate the genetic gain
Sorghum pan-genome explores the functional utility to accelerate the genetic gain Open
Sorghum ( Sorghum bicolor L.) is one of the most important food crops in the arid and rainfed production ecologies. It is a part of resilient farming and is projected as a smart crop to overcome the food and nutritional challenges in the d…
View article: Novel sources of drought tolerance from landraces and wild sorghum relatives
Novel sources of drought tolerance from landraces and wild sorghum relatives Open
Sorghum ( Sorghum bicolor [L.] Moench) is the fifth most important cereal crop worldwide and second after maize ( Zea mays L.) in Kenya. It is an important food security crop in arid and semi‐arid lands, where its production potential is h…
View article: Aggravated food insecurity in COVID-19 era: quality seed flow of adapted and nutrient-dense varieties is central to the recovery equation in the drylands
Aggravated food insecurity in COVID-19 era: quality seed flow of adapted and nutrient-dense varieties is central to the recovery equation in the drylands Open
The COVID-19 pandemic has disrupted every area of our daily activities and businesses. After the health crisis, the food crisis is the next battle to encounter, which will need to mobilize all energies to maintain social security and prote…
View article: Gene action of blast disease reaction and grain yield traits in finger millet
Gene action of blast disease reaction and grain yield traits in finger millet Open
Gene action of blast reaction, yield and yield associated traits in finger millet were studied using a 4x4 North Carolina Design II mating scheme. The four female and four male parents and their 16 crosses were evaluated at Alupe and Kakam…
View article: Heterosis and combining ability for grain and biomass yield in sorghum hybrids for the semi-arid lowlands of Eastern Kenya
Heterosis and combining ability for grain and biomass yield in sorghum hybrids for the semi-arid lowlands of Eastern Kenya Open
Sorghum [Sorghum bicolor (L.) Moench] is an important cereal crop used for food, feed, and industrial raw material. In Kenya, it’s a food and nutritional security crop in the semi-arid areas which are prone to maize crop failures. The stud…
View article: Combining ability for earliness and yield among south sudanese F1 sorghum genotypes
Combining ability for earliness and yield among south sudanese F1 sorghum genotypes Open
The development of staygreen genotypes through hybridization is an important food security strategy in the semi-arid tropics. This study used 36 sorghum synthetics obtained from a 6 x 6 full diallel mating design. The parents, F1 progenies…
View article: Sources of Resistance to Blast Disease (Pyriculariagrisea L.) in Finger Millet (EleusineCoracana) Germplasm
Sources of Resistance to Blast Disease (Pyriculariagrisea L.) in Finger Millet (EleusineCoracana) Germplasm Open
Blast has been a continuous threat to finger millet production in semi-arid tropics.The disease is economically important and widespread in finger millet major growing areas of western, Nyanza and Rift valley in Kenya.Host resistance is th…
View article: Exploiting Genetic Diversity for Blast Disease Resistance Sources in Finger Millet (<i>Eleusine coracana</i>)
Exploiting Genetic Diversity for Blast Disease Resistance Sources in Finger Millet (<i>Eleusine coracana</i>) Open
Finger millet blast, caused by Magnaporthe grisea, is the most important disease of finger millet in East Africa. Diseased plants are significantly less productive, and most cultivars grown by farmers are susceptible to the disease. Fungic…
View article: Evaluation of Genotype x Environment Interaction and Stability of Grain Yield and Related Yield Components in Pearl Millet (Pennisetum glaucum (L.) R.Br.)
Evaluation of Genotype x Environment Interaction and Stability of Grain Yield and Related Yield Components in Pearl Millet (Pennisetum glaucum (L.) R.Br.) Open
Thirty six pearl millet genotypes were evaluated in randomized complete block design with two
\nreplications during 2011/2012 at two locations to study the magnitude of genotype by environment
\ninteraction for yield and yield related trai…
View article: Geographical distribution, diversity and gap analysis of East African sorghum collection conserved at the ICRISAT genebank
Geographical distribution, diversity and gap analysis of East African sorghum collection conserved at the ICRISAT genebank Open
The aim of the investigation was to assess the geographical distribution, diversity and gaps in sorghum collection from East African countries conserved at the ICRISAT genebank.The collection represents a total of 12,750 accessions includi…
View article: Field screening finger millet germplasm for drought tolerance
Field screening finger millet germplasm for drought tolerance Open
Drought stress is the most important abiotic constraint limiting
\nfinger millet production. Limited research on tolerance to drought
\nin finger millet has been done in Africa. As a result, the only varieties
\nadapted to high-rainfall re…
View article: Conduct Preliminary (49-100 entries) and Advanced (16-25 entries) trials of sorghum lines with multiple traits (Striga, midge, drought tolerance) and end-uses (food, feed and malting)
Conduct Preliminary (49-100 entries) and Advanced (16-25 entries) trials of sorghum lines with multiple traits (Striga, midge, drought tolerance) and end-uses (food, feed and malting) Open
In Kenya the best performing sorghum lines IS 16545, Khalid, IS 25395, ASARECA 24-4-1 and ASARECA 15-2-1 had grain yields ranging from 2.593 to 3.33 t ha-1 and 76 to 81 days to flowering whereas in Tanzania, the best performing lines were …
View article: Evaluate selected hybrids (25-49) across agro-ecologies in Kenya, Ethiopia, Tanzania, Sudan and Uganda
Evaluate selected hybrids (25-49) across agro-ecologies in Kenya, Ethiopia, Tanzania, Sudan and Uganda Open
In Kenya and Tanzania hybrids IESH 22023, IESH 28005, IESH 22009, IESH 214016 and IESH 214016 had the best grain yields (4.370-6.889 t/ha) and overall agronomy and were selected for on-farm testing. These hybrids had 3.5-63.2 percent yield…
View article: Identify validate and scale out small scale gender friendly sorghum threshers
Identify validate and scale out small scale gender friendly sorghum threshers Open
The threshers were found to be about 60-70% efficient for sorghum and less than 50% effiecient for finger millet. There was no provision of a blower which meant farmers would still spend more money on winnowing. The fabricators took note o…
View article: The effectiveness and complementarity of field days and small seed packs (SSPs) in delivering Dryland Cereal technologies: A survey of field day participants and agro-vets in Singida and Iramba districts of central Tanzania, Working Paper Series No. 61
The effectiveness and complementarity of field days and small seed packs (SSPs) in delivering Dryland Cereal technologies: A survey of field day participants and agro-vets in Singida and Iramba districts of central Tanzania, Working Paper Series No. 61 Open
This paper is about the result of a survey done in the 2014-2015 cropping season of field day participants
\nand agro-vets who were facilitated to market SSPs and SFPs in Singida and Iramba districts of Tanzania. The
\nobjective of the sur…
View article: COMBINE SELECTION FOR EARLINESS AND YIELD IN PEDIGREE DEVELOPED SORGHUM (SORGHUM BICOLOR L. MOENCH) PROGENIES IN ERITREA
COMBINE SELECTION FOR EARLINESS AND YIELD IN PEDIGREE DEVELOPED SORGHUM (SORGHUM BICOLOR L. MOENCH) PROGENIES IN ERITREA Open
Thirteen progenies of sorghum (Sorghum bicolor L. Moench) crosses (Amal and ICSV 91078) that selected using pedigree breeding method, were evaluated along with their parental checks to obtain information on yield potential, earliness, gene…