Browsing Articles: Department of Biological Sciences by Author "Gichimu, Bernard M."
Now showing items 1-17 of 17
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Agro-morphological characterization of horned melon (Cucumis metuliferus) accessions from selected agro-ecological zones in Kenya
Owino, Marline H.; Gichimu, Bernard M.; Muturi, Phyllis W. (Australian Journal of crop science, 2020-09)Morphological characterization of genotypes is fundamental in providing information on their genetic status to guide on their conservation and improvement. The objective of this study was to determine agro-morphological ... -
Agro-Morphological Characterization of Kenyan Slender Leaf (Crotalaria brevidens and C. ochroleuca) Accessions
Mwakha, Fridah A.; Gichimu, Bernard M.; Neondo, ohnstone O.; Kamau, Peter K.; Odari, Eddy O.; Muli, Joshua K.; Budambula, Nancy (Hindawi, 2020-04)Slender leaf (Crotalaria spp) is among the indigenous and underutilized vegetables in Kenya whose production is limited to the Western and Coastal regions of the country. For a long time, this crop has been neglected in ... -
Assessment of Four Commercial Watermelon Cultivars and one Local Landrace for Their Response to Naturally Occurring Diseases Pests and Non-Pathogenic Disorders in Sub-Humid Tropical Conditions
Gichimu, Bernard M.; Owuor, B.O; Dida, M. M. (Asian Research Publishing Network (ARPN), 2008-09)Four commercial watermelon cultivars available in Kenya and one local landrace were evaluated for their susceptibility/resistance to naturally occurring diseases, pests and non-pathogenic disorders. The accessions included ... -
Biochemical Composition Within Coffea arabica cv. Ruiru 11 and Its Relationship With Cup Quality
Gichimu, Bernard M.; Gichuru, E. K.; Mamati, George E.; Nyende, A.B. (Canadian Center of Science and Education, 2014-01-14)Biochemical composition appears to be influenced by both genetic factors and plant growth conditions. The main objective of this study was to evaluate the biochemical composition of selected Ruiru 11 sibs and its relationship ... -
Comparing the yield components of three most popular commercial watermelon cultivars in Kenya with one newly introduced cultivar and one landrace
Gichimu, Bernard M.; Owuor, B.O; Dida, M. M. (Academic Journals, 2009-06)High yield is a major goal for watermelon (Citrullus lanatus) breeders. The objective of this study was to compare the yield components of some watermelon accessions available in Kenya and to identify high yielding ... -
Drought and heat tolerance in coffee: a review
Gichimu, Bernard M.; Cheserek, J.J. (2012-12)Climatic variability is the main factor responsible for the fluctuations in the coffee yield in the world. The relationships between the climatic parameters and the agricultural production are quite complex, because ... -
Early Assessment of Growth and Yield Characters of five newly developed lines of Arabica Coffee in two environments and spacings in Kenya
Gichimu, Bernard M.; Omondi, C. (2010)Knowledge of the effects of environment and genotype by environment (GxE) interaction is important to breeders in making decisions regarding the release of new cultivars. Five Coffea arabica lines coded CR8, CR22, CR23, ... -
Early performance of five newly developed lines of Arabica Coffee under varying environment and spacing in Kenya
Gichimu, Bernard M.; Omondi, C. (2010)Knowledge of the effects of environment and genotype by environment (GxE) interaction is important to breeders in making decisions regarding the release of new cultivars. Five Coffea arabica lines coded CR8, CR22, CR23, ... -
Effect of Different Watering Regimes on Agromorphology of Selected Coffee Genotypes
Gichimu, Bernard M.; Cheserek, J. J; Mushimiyamana, D.; King’oro, M. W. (SCIENCEDOMAIN international, 2014-01-27)Aims: The aim of this study was to determine the effect of different watering regimes on selected coffee genotypes and to evaluate drought tolerance among selected coffee genotypes. The study also aimed at determining ... -
Evaluation of beverage quality and green bean physical characteristics of selected Arabica coffee genotypes in Kenya
Gichimu, Bernard M.; Kathurima, CW.; Kenji, GM.; Muhoho, SM.; Boulanger, R. (Academic Journals, 2009-10)Physical characteristics of green coffee bean have been reported to affect beverage quality to some extent. The objective of this study was to assess the beverage quality and green bean physical characteristics of forty ... -
Field Screening of Selected Coffea arabica L. Genotypes Against Coffee Leaf Rust
Gichimu, Bernard M. (2012-06)Coffee Leaf Rust (CLR) is a fungal disease caused by Hemileia vastatrix Berk et Br. and is one of the major diseases of coffee. It causes premature leaf fall, yield loss and even death of the tree in severe cases. Coffee ... -
Genetic diversity among commercial coffee varieties, advanced selections and museum collections in Kenya using molecular markers
Gichimu, Bernard M.; Kathurima, CW.; Kenji, GM.; Muhoho, SM.; Boulanger, R.; Gichuru, E. K. (Academic Journals, 2012-02)Molecular markers have effectively been applied to study genetic diversity and as markers of particular traits. This study assessed the diversity of twenty four (24) coffee genotypes using 10 Random Amplified Polymorphic ... -
Growth and nutrient uptake among three wetland plant species occurring in Lake Victoria basin in Kenya.
Gichimu, Bernard M.; Musyimi, D. M.; Netondo, G. W.; Owuor, B.O (2010)Nutrient enrichment is one of the most serious threats to wetland ecosystems. Information is lacking, particularly concerning the response of wetland plants species in Kenya in regard to nutrient enrichment of wetlands. ... -
Morphological characterization of Kenyan native wood ear mushroom [Auricularia auricula (L. ex Hook.) Underw.] and the effect of supplemented millet and sorghum grains in spawn production
Gichimu, Bernard M.; Palapala, V.A; Arama, P.F; Wagai, S.O. (2011)Utilization of mushrooms collected from the wild requires adequate description of useful phenetic features and domestication protocols. This study investigated morphological characters and spawn production procedures of ... -
Morphological Characterization of Some Wild and Cultivated Watermelon (Citrullus Sp.) Accessions in Kenya
Gichimu, Bernard M.; Owuor, B.O; Mwai, Gideon N.; Dida, Mathews M. (2009-03)Genetic diversity and relatedness were assessed among three most common commercial watermelon cultivars in Kenya; one newly introduced commercial cultivar from the U.S., one Kenyan landrace and one wild (Citrullus colocynthis) ... -
Occurrence of Ck-1 gene conferring resistance to Coffee Berry Disease in Coffea arabica cv. Ruiru 11 and its parental genotypes
Gichimu, Bernard M.; Gichuru, E. K.; Mamati, George E.; Nyende, A.B. (Scienceweb Publishing, 2014-03)Resistance to Coffee Berry Disease (CBD) in Coffea arabica cv. Ruiru 11 is known to be controlled by among others, the T (Ck-1) gene from Robusta coffee (Coffea canephora Pierre). The cultivar reportedly presents significant ... -
Variation and Association of Cup Quality Attributes and Resistance to Coffee Berry Disease in Coffea Arabica L. Composite Cultivar, Ruiru 11
Gichimu, Bernard M.; Gichuru, E. K.; Mamati, George E.; Nyende, A.B. (2013-12)Majority of reported work on coffee breeding primarily concerns agronomic improvement that directly impinges on coffee quality. However, it is crucial that coffee breeding programmes for disease resistance also include ...