Department of Botany: Recent submissions
Now showing items 181-200 of 229
-
valuation for resistance to the spotted stem borer, Chilo Partellus, in a maize (zea mays L.) population. Maize Production Technology for the Future: Challenges and Opportunities. Proceedings of the Eastern and Southern Africa Regional Maize Conference, 6; Addis Ababa (Ethiopia); 21-25 Sep 1998.
(Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico)., 1999)AGenetic variability and predicted responses to S2 and testcross selection methods were studied in an open-pollinated variety resistant to the spotted stem borer,(Chilo partellus Swinhoe). Evaluation after one cycle of ... -
Severity of Alternaria Leaf Spot and Seed Infection by Alternaria sesami (Kawamura) Mohanty and Behera, as Affected by Plant Age of Sesame (Sesamum indicum L.)
(Blackwell Publishing Ltd, 1999-07-01)Alternaria leaf spot incited by Alternaria sesami , was monitored to determine the effect of plant age on disease severity and seed infection by A. sesami in plots containing sesame accession SPS SIK 110 plants of five ... -
Infection of sesame seed by Alternaria sesami (Kawamura) Mohanty and Behera and severity of Alternaria leaf spot in Kenya
(Taylor & Francis Group, 2000-01-01)Infection levels of Alternaria sesami in sesame (Sesamum indicum L.) seeds collected from farmers in western districts of Kenya were detected using the oatmeal agar plate method. Infection levels varied from 9% in Kakamega ... -
Reaction of Some Coffea arabica Genotypes to Strains of Colletotrichum kahawae, the Cause of Coffee Berry Disease
(Blackwell Publishing Ltd, 2000-01-01)Pathogenicity tests were performed on 11 genotypes of Coffea arabica using single‐isolate suspensions of Colletotrichum Kahawae obtained from 90 monoconidial isolates. The objective of this study was to estimate the ... -
Yield and Yield Stability of Four Population Types of Grain Sorghum in a Semi‐Arid Area of Kenya
(Crop Breeding, Genetics & Cytology, 2000-03-01)Sorghum [Sorghum bicolor (L.) Moench] is widely grown in semi‐arid tropics where local farmers depend on the adaptability of their rainfed crops to unpredictable drought and other stress factors. To investigate the effects ... -
TOLERANCE LEVEL OF ALTERNARIA SESAMI AND THE EFFECT OF SEED INFECTION ON YIELD OF SESAME IN KENYA
(Cambridge University Press, 2007-07)Field plots of sesame (Sesamum indicum) with six different levels of seed infection with Alternaria sesami were monitored for Alternaria leaf spot severity at Kibwezi, eastern Kenya. The aim of the study was to determine ... -
Yield improvement of Kenyan sesame varieties
(University of Nairobi, 2001)In an effort to improve the yield of Kenyan sesame cultivars the seeds of three cultivars, SPS SIK6, SIK 096 and SPS SIK 50/1 were subjected to 300Gy, 400Gy and 600Gy of gamma rays. A first batch of seeds were subjected ... -
Resistance of Coffea arabica cv. Ruiru 11 tested with different isolates of Colletotrichum kahawae, the causal agent of coffee berry disease
(Springer Netherlands, 2001-08-01)Seven single conidia isolates of Colletotrichum kahawae varying in pathogenicity were used to inoculate hybrid progenies from 66 crosses ofCoffea arabica cv. Ruiru 11. The objective of this study was to investigate the ... -
Field transmission efficiency of Alternaria sesami in sesame from infected seed
(Elsevier, 2003-11-30)Four sesame accessions with varying levels of susceptibility to Alternaria sesami were selected from an advanced germplasm collection of the Sesame Improvement Project to determine transmission efficiency of A. sesami from ... -
Comparison of S2 and S2 X test cross evaluation for the selection in maize
(KARI, 2004)S2 and S2 1testcross hybrid evaluation for one cycle of selection for resistance to the spotted stem borer, (Chilo partellus Swinhoe) and grain yield were made in an open-pollinated maize (Zea mays L) population (ICZ3) One ... -
Inheritance of resistance to the spotted stem borer, chilo partellus, in a maize population.
(Kenya Agricultural Research Institute, Nairobi (Kenya), 2006)The spotted stem borer, Chilo partellus is an important insect pest of maize. It damages maize by feeding on the leaves and within the plant. Maize yield loss due to Chilo spp. Stem borer damage is estimated at 44 percent ... -
Relationship between leaf water status and varietal adaptation of
(East African Agricultural and Forestry Journal, 2008-09-15)Field and greenhouse experiments were conducted to examine differences in leaf water status between bean cultivars from low and high rainfall areas of Kenya, and hence investigate the relationship between this parameter ... -
Seed dormancy and appropriate germination protocol for Vernonia galamensis (Asteraceae).
(Kenya Forestry Research Institute, 2009)ernonia galamensis (Cass.) Less., (Asteraceae) is a new potential industrial oil crop that originated in eastern and south-eastern parts of Ethiopia and is endemic primarily to East African countries. On a dry mass basis, ... -
Performance of some quinoa (Chenopodium quinoa Willd.) genotypes in Kenya
(Taylor & Francis, 2010-01-01)Quinoa (Chenopdium quinoa Willd.) has been cultivated for thousands of years in South America for its nutritious grain and leaves. Demand for the crop has risen in the recent past. In order to satisfy the demand, there is ... -
Biofortified sorghum in Africa: using problem formulation to inform risk assessment
(Nat. Biotechnol., 2010)Most of the genetically modified (GM) crops approved to date (eg, corn, cotton and soybean improved for insect resistance or herbicide tolerance) do not have compatible wild relatives near their intended area of cultivation, ... -
Reproduction Inhibition Effects of Neem Products on the Larger Grain Borer (Prostephanus truncatus) (HORN) in Stored Maize Grains
(Egerton Journal of Science & Technology, 2012-12-07)The larger grain borer (LGB), Prostephanus truncatus (HORN), has become one of the most important insect pest of stored maize in tropical Africa where it was introduced in the early 1980s. It has the major effect of seriously ... -
Ethnobotanical study of medicinal plants used by Sabaots of Mt. Elgon Kenya.
(africanethnomedicines, 2010)Though the majority of people in Kenya and at Kopsiro Division in species to manage human ailments, the indigenous knowledge largely remains undocumented. Therefore, an ethnobotanical study was conducted on medicinal plant ... -
Sorghum and salinity: I. Response of growth, water relations, and ion accumulation to NaCl salinity
(Crop Science Society of America, 2004)Crops grown in salt affected soils may suffer from drought stress, ion toxicity, and mineral deficiency leading to reduced growth and productivity. The present study was conducted to determine how salinity affects growth, ... -
Effect of NPK Blended Fertilizer Rates on Growth and Yield Attributes of Finger Millet Varieties Grown in Acidic Soil of Western Kenya
(Archives of Current Research International, 2017)Finger millet (Eleusine coracana L) is the staple food among the population of Africa and Asia that supplies a major portion of calories and protein and has a wide range of adaptability to abiotic and biotic stresses and ...