Browsing Journal Articles by Author "Gudu, Samuel"
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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) -
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 ... -
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 ... -
Effect of ridging and intercropping on sorghum productivity in arid and semi arid lands of eastern Kenya
Gudu, Samuel; Musyimi, David; Ouma, Enock (African crop science society, 2022-02-28)Soil moisture deficit is a key constraint to sorghum (Sorghum bicolor) productivity in arid and semi arid lands globally. The objective of this study was to determine the effect of ridging and sorghum bean intercropping ... -
Effects of lime, phosphorus and rhizobia on Sesbania sesban performance in a Western Kenyan acid soil
Kisinyo, Peter; Othieno, Caleb; Gudu, Samuel; Okalebo, J. R.; Opala, P. A.; Maghanga, J. K.; Agalo, Jerry; Ng'etich, W. K.; Kisinyo, Joyce; Osiyo, R. J.; Nekesa, A. O.; Makatiani, E. T.; Odee, D. W.; Ogola, B. O. (2015-07-21)Aluminium (Al) toxicity, phosphorus (P) deficiency and low rhizobia populations limit Sesbania (Sesbania sesban) performance in tropical acid soils. The study determined the i) indigenous rhizobia populations that nodulate ... -
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) ... -
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 Effects for Maize P Efficiency Traits in Acid and Non-acid Soils of Western Kenya
Ouma, Evans Ochieng; Gudu, Samuel (American Journal of Experimental Agriculture, 2015)Soil acidity is a major constraint to maize (Zea mays L.) productivity in tropical soils due to toxic levels of aluminium (Al) and phosphorus (P) deficiency. The objectives of this study were ... -
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 ... -
Immediate and residual effects of lime and phosphorus fertilizer on soil acidity and maize production in western Kenya
Kisinyo, Peter; Othieno, Caleb; Gudu, Samuel; Okalebo, J. R; Opala, P. A.; Ng'etich, W. K.; Nyambati, R.O.; Ouma, Evans Ochieng; Agalo, Jerry; Kebeney, S.J; Too, E.J; Kisinyo, Joyce; Opile, W.R. (2015-08-21)Soil acidity and phosphorus (P) deficiency are some of the major causes of low maize yields in Kenya. This study determined the immediate and residual effects of lime and P fertilizer on soil pH, exchangeable aluminium ... -
Micro-Dosing of Lime, Phosphorus and Nitrogen Fertilizers Effect on Maize Performance on an Acid Soil in Kenya
Kisinyo, Peter; Gudu, Samuel; Palapala, Valerie; Opala, P. A.; Othieno, Caleb; Ouma, Evans Ochieng (Sustainable Agriculture Research, 2015-03-17)High cost of inorganic fertilizers and lime has precluded their use by smallholder farmers to remedy the problem of soil acidity and infertility in Kenya. To address the problem, we tested a precision technique referred ... -
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, ... -
New genomic regions associated with aluminum tolerance in a Kenyan corn population
Gudu, Samuel; Ouma, Evans Ochieng; Guimarães, RGN; Matonyei, T; Tinoco, CFS; Ligeyo, D; Mendes, FF; Magalhães, JV; Guimarães, CT (2018) -
Nutrient composition of Sorghum-Based Rations and their effect on growth of Improved Indigenous Chicken in Western Kenya
Kiptui, Brenda Jemutai; Mewa, Eunice Akello; Rachuonyo, Harold Anindo; Were, Beatrice Ang’iyo; Gudu, Samuel (East African Journal of Agriculture and Biotechnology, 2024)Improved indigenous chicken contribute to the nutrition of farmers in rural communities. The use of maize as an energy source in chicken diets is becoming unacceptable due to competition from humans, resulting in high ... -
Performance of Leucaena leucocephala, Seedlings in Two Agro-climatic Regions of Kenya
Gudu, Samuel; Palapala, Valerie; Kodiango, R. (Journal of Agriculture and Ecology Research International, 2016-02-17)A study was conducted to determine the response of Leucaena seedlings planted in two variant agro-climatic regions, Chepkoilel Campus and Maseno in Kenya. The experiment was a 2-factor (provenance – site) split plot ... -
Phosphorus Sorption and Lime Requirements of Maize Growing Acid Soils of Kenya
Kisinyo, Peter; Othieno, Caleb; Gudu, Samuel; Okalebo, J. R.; Opala, P. A.; Maghanga, J. K.; Ng'etich, W. K.; Agalo, Joyce; Opile, R.W.; Kisinyo, Joyce; Ogola, B. O. (2015-08-21)In Kenya, maize (Zea mays L.) is mainly grown on acid soils in high rainfall areas. These soils are known for low available phosphorus (P), partly due to its sorption by aluminium (Al) and iron oxides. The study ... -
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 ...