Browsing Journal Articles by Author "Onkware, Augustino"
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Adoption of Drought Tolerant Sorghum in Western Kenya
Ouma, Evans Ochieng; Kisinyo, Peter; Gudu, Samuel; Mugalavai, Violet; Nyangweso, Peter; Onkware, Augustino (Moi University Press, 2012)Food and nutritional insecurity are responsible for poverty and low livelihoods of about 33% of people living in western part of Kenya. This is against MDG1. The production of sorghum which is a staple food crop is below ... -
Aluminum tolerance mechanisms in Kenyan maize germplasm are independent from the citrate transporter ZmMATE1
Matonye, Thomas K.; Gudu, Samuel; Kisinyo, Peter; Matonye, Thomas K.; Barros, Beatriz A.; Ouma, Evans Ochieng; Cheprot, Reuben K.; Apolinário, Leandro C.; Ligeyo, Dickson O.; Costa, Marcella B. R.; Were, Beatrice Ang’iyo; Onkware, Augustino; Noda, Roberto W.; Magalhaes, Jurandir V.; Guimaraes, Claudia T. (Scientific Reports, 2020) -
Assessment of temporal primary production in tropical inland swamp wetlands of Uasin Gishu county, Kenya
Onkware, Augustino; Mulei, Josephine M.; Otieno, Donald F. (2018-07-03)Wetlands are highly productive ecosystems offering valuable ecosystem and socio-economic services. Worldwide they are threatened by encroachment due to increasing human population. Limited research has been done on the ... -
Assessment of temporal primary production in tropical inland swamp wetlands of Uasin Gishu County, Kenya
Josephine M. Mulei; Onkware, Augustino; Donald F. Otieno (J. Wetlands Biodiversity, 2018-07-03)Wetlands are highly productive ecosystems offering valuable ecosystem and socio-economic services. Worldwide they are threatened by encroachment due to increasing human population. Limited research has been done on the ... -
Cell membrane integrity, callose accumulation, and root growth in aluminum-stressed sorghum seedlings
Emily Jepkosgei Too; Beatrice Ang’iyo Were; Onkware, Augustino; Anders S. Carlsson; Mulatu Geleta; Gudu, Samuel; T. Bryngelsson (2015-08-21)Aluminum stress usually reduces plant root growth due to the accumulation of Al in specific zones of the root apex. The objectives of this study were to determine the localization of Al in the root apex of Sorghum bicolor ... -
Cell membrane integrity, callose accumulation, and root growth in aluminum-stressed sorghum seedlings
Gudu, Samuel; Onkware, Augustino; Emily Jepkosgei Too; Beatrice Ang’iyo Were; Anders S. Carlsson; Mulatu Geleta; T. Bryngelsson (2015-08-19)Aluminum stress usually reduces plant root growth due to the accumulation of Al in specific zones of the root apex. The objectives of this study were to determine the localization of Al in the root apex of Sorghum bicolor ... -
Characterization of The Nutritional Properties of Sorghum Composite Flours Using Different Food to Food Fortification Approaches
Mugalavai, Violet; Onkware, Augustino; Oyalo, Josiah (European Journal of Agriculture and Food Sciences, 2020-11)Intervention using blended composite flours can reduce malnutrition in sub Saharan Africa. Prevalence of protein-energy malnutrition among the vulnerable children has necessitated research on cost effective food ... -
Combining ability of some sorghum lines for dry lands and sub-humid environments of East Africa
Rathore Abhishek; Beatrice Ang’iyo Were; Mary Mgonja; Deshpande Santosh; Mneney Emmarold; Onkware, Augustino; Gudu, Samuel; Ringo Justin (2015-08-19)Sorghum (Sorghum bicolor L. Moench) is a major food crop grown in dry lands and sub-humid areas of East Africa. A study was conducted between 2010 to 2012 in dry lands (Miwaleni, Kiboko) and sub- humid (Ukiriguru) ... -
Development of maize single cross hybrids for tolerance to low phosphorus
Gudu, Samuel; Kisinyo, Peter; Ouma, Evans Ochieng; Ligeyo, Dickson; Matonyei, Thomas; Were, Beatrice Ang’iyo; Agalo, Joyce; Too, Emily; Onkware, Augustino; Okalebo, John; Othieno, Caleb (2015-08-21)Low available phosphorus (P) is one of the major hindrances to maize (Zea mays L.) productivity in acid soils. The objectives of this study were to: (1) develop P-efficient maize inbred lines, (2) develop single cross ... -
Effects of physico-chemical parameters on abundance and biomass of phytoplankton in chebara reservoir-Kenya
Onkware, Augustino; Manyala, Julius O.; Ojunga, Salome (2017-04)River impoundment creates reservoirs of varying sizes that supply water for multiple uses including electric power generation, domestic, agriculture or industry. However, damming of rivers creates an aquatic habitat of ... -
Enhancing Maize Grain Yield in Acid Soils of Western Kenya Using Aluminium Tolerant Germplasm
Ouma, Evans Ochieng; Ligeyo, Dickson; Matonyei, Thomas; Agalo, Joyce; Were, Beatrice Ang’iyo; Too, Emily; Onkware, Augustino; Gudu, Samuel; Kisinyo, Peter; Nyangweso, Philip (2015-07-21)Abstract: Maize (Zea mays L.) is one of the world’s most important cereals and is a staple food for many people in developing countries. However, in acid soils (pH < 5.5), its productivity is limited by aluminium (Al) ... -
An Ethnobotanical Study of Swamp Wetland Vegetation in Uasin Gishu County, Kenya
Josephine Mumbe Mulei; Donald F. Otieno; Onkware, Augustino (2015-08-21)Ethnobotanical knowledge associated with wetland plants in Uasin Gishu County, Kenya, was assessed and docu- mented. Data on the uses of plants, their local names, and parts used were collected through semi-structured ... -
Food Security Status During The Covid-19 Pandemic Among Vulnerable Groups In Keiyo South, Elgeyo Marakwet County, Kenya
Onkware, Augustino; Mugalavai, Violet; Ouma, Robinson; Ouma, Peter (International Journal of Scientific and Research Publications,, 2021)Health guidelines to manage the COVID-19 pandemic could have led to unintended changes in states and processes that affect food systems, food security, and nutrition. The study conducted in Elgeyo Marakwet County, Kenya ... -
Genetic Diversity in Cultivated Sesame (Sesamum indicum L.) and Related Wild Species in East Africa
Gudu, Samuel; Otto George Dangasuk; Beatrice Ang’iyo Were; Benson Ouma Nyongesa; Onkware, Augustino (2015-08-21)Genetic diversity of traditional sesame landraces and related wild species in East Africa remains largely unexplored. Knowing what fraction of the available genetic diversity is actually used by the farmers is of central ... -
Genetic relationship between sesame (Sesamum indicum L.) and related wild species based on chromosome counts and isozyme markers
Onkware, Augustino; Beatrice Ang’iyo Were; Gudu, Samuel; Benson Ouma Nyongesa; Otto George Dangasuk (2015-08-19)Sesame is an orphan crop with little research attention in Kenya. Genetic relationship between cultivated sesame and related wild species in Kenya is not well known. The objective of this study was to determine genetic ... -
Impact of a Kraft Pulp and Paper Mill Effluent on Phytoplankton and Macroinvertebrates in River Nzoia, Kenya
Kingiri Senelwa; Frank O. Masese; Julius O. Manyala; Lazare Etiégni; Onkware, Augustino; Philip O. Raburu; Salome Ojunga; Elijah S. Omutange; B. K. Balozi (2015-08-21)Phytoplankton and macroinvertebrate assemblages were used to assess the impact of a kraft pulp and paper mill effluent in Kenya, on River Nzoia downstream of the discharge point in relation to changes in water quality ... -
Molecular markers associated with aluminium tolerance in Sorghum bicolor
Too, Emily Jepkosgei; Anders S. Carlsson; Were, Beatrice Ang’iyo; Gudu, Samuel; Onkware, Augustino; Mulatu, Geleta (Hereditas, 2018)Background: Sorghum (Sorghum bicolor, L. Moench) production in many agro-ecologies is constrained by a variety of stresses, including high levels of aluminium (Al) commonly found in acid soils. Therefore, for such soils, ... -
Mycorrhizal Development and Phosphorus Concentration in selected Kenyan Sorghum Cultivars
Rasowo, Brenda; Muthuri, Jacinta; Ndiema, Philip; Onkware, Augustino (2015-08-19)This study was carried out on sorghum genotypes that exhibited significant difference in growth and production on P-deficient soils. The objective was to find out if the genotypes developed different levels of mycorrhizal ... -
Phylogenetic relationship among Kenyan sorghum germplasms based on aluminium tolerance
Emily Jepkosgei Too; Gudu, Samuel; Cheprot, Reuben K.; Matonyei, Thomas; Were, Beatrice Ang’iyo; Onkware, Augustino; Dangasuk O. George; Ouma, Evans; Liu, J; Kochian, L. V. (2015-08-21)Eighty nine (89) sorghum lines sourced from various parts of Kenya were used to determine phylogenetic relationships based on 10 DNA fragments at AltSB loci with SbMATE, ORF9 and MITE primers. Nine lines of varying ... -
Physiological characterization of kenyan sorghum lines for tolerance to aluminium
Matonyei, Thomas; Cheprot, Reuben K.; Maritim K. K.; Beatrice Ang’iyo Were; Dangasuk O. George; Onkware, Augustino; Gudu, Samuel (2015-08-21)Eighty nine Kenyan sorghum lines were screened for tolerance to aluminium toxicity in nutrient solution. Relative net root growth; root tip aluminium content and variation in organic acid exudation were used to determine ...