School of Biological and Physical Science: Recent submissions
Now showing items 561-580 of 933
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The Kakamega Forest medicinal plant resources and their utilization by the adjacent Luhya community.
(Medwell Online, 2009)Kakamega Forest in Kenya is a rich natural setting endowed with abundant flora and fauna used by the local communities who once lived within the forest and those who now border it. There has been scarcity of information ... -
The distribution of C3 and C4 photosynthetic species of the Centrospermeae along an altitudinal gradient in Western Kenya.
(ANSInet, Asian Network for Scientific Information, 2009)Two hundred and seventy eight species of the Centrospermeae were collected at different sites in Western Kenya representing gradients of altitude and aridity. Climate data were obtained from meteorological research stations. ... -
Female gametophyte in two Kenyan species of Inversodicraea (Podostemaceae).
(Academic Journals, 2009)The ontogeny and organization of the female gametophyte in I. bifurcata and Inversodicraea keniensis sp. nov. in Kenya were studied. The ontogeny of the female gametophyte was classified under the Apinagia type. The primary ... -
Carbon dioxide compensation points of some dicots of the Centrospermeae species and their ecological implications for agroforestry.
(ANSInet, Asian Network for Scientific Information, 2009)The present studies on carbon dioxide compensation point (Γ) considered species from tropical semi-arid, snowline and saline ecosystems. The aim of the study was to establish the ecological range of the CO2 compensation ... -
Annotated checklist of the vascular plants of Kakamega Forest, Western Province, Kenya
(Nature Kenya/East African Natural History Society, 2012-12)An annotated checklist of the Kakamega Forest in Kakamega District is presented. The checklist includes the plants found mainly in Buyangu National Reserve, and the Nature Reserves of Isecheno and Yala. It also includes ... -
Evaluation of ecologies and severity of Striga weed on rice in sub-Saharan Africa
(Science Hub, LLC, 2011)Striga spp. is renowned for causing great losses in cereal production in sub-Saharan Africa. Crop competitiveness with parasitic weeds such as Striga is an important criterion for selection in an initiative to produce ... -
Pedological perspective of gully erosion sites within Kendu escarpment-Sondu Miriu Region, West Kenya
(2011)Gully erosion is a common feature in western Kenya, rendering large expanses of otherwise arable land uncultivable and uninhabitable. Gully erosion in the area was classified into two types: the Awach-type and the Sondu-type. ... -
Field evaluation of selected NERICA rice cultivars in Western Kenya
(Academic Journals, 2011-01-04)Food shortage is a major problem in sub-Saharan Africa as population increases. NERICA (New Rice for Africa), the high yielding rice cultivars with short growth cycle were developed to solve the food crisis. The progeny ... -
Spatial heterogeneity in ecosystem structure and productivity in a moist Kenyan savanna
(Springer Netherlands, 2011-05-01)Topographic variations and disturbances are key sources of spatial heterogeneity in the ecosystem and may influence its functioning, productivity, and carbon (C) storage. In water controlled ecosystems, structural and ... -
Striga infestation in Kenya: status, distribution and management options
(Canadian Center of Science and Education, 2013)Striga spp. is considered to be the greatest biological constraint to food production in sub-Saharan Africa, a more serious problem than insects, birds and plant diseases. They are among the most specialized root-parasitic ... -
The sustainability of new urban developments in Dubai
(Thomas Telford Ltd, 2013-04)Dubai, the second largest city of the United Arab Emirates, is a fast-growing hub with increasing need for infrastructure, housing and public facilities. Dubai is trying to market itself as an attractive holiday destination, ... -
Carbon dioxide exchange and biomass productivity of the herbaceous layer of a managed tropical humid savanna ecosystem in western Kenya
(Oxford University Press, 2013-08-01)Humid savannas, as a result of high precipitation amounts, are highly productive. They are also hotspots for land use change and potential sources of carbon dioxide (CO2) due to the large soil carbon (C) stocks. Understanding ... -
The rate of outcrossing in grain amaranths
(Blackwell Publishing Ltd, 1991-09-01)Studies of intra specific and inter specific out crossing rates were carried out for grain amaranths using two populations of A. hypochondriacus (populations 1008 and 1024) and two populations of A. cruentus (populations ... -
Root-Fusion Characteristic of Eucalyptus Trees Block Gully Development
(Scientific Research Publishing, 2013-08-28)Soil erosion by water resulting in gully formation is a common occurrence in western Kenya. Establishment of local and sustainable countermeasures to prevent gully development/expansion in western Kenya is an urgent issue. ... -
Soil fertility dynamics in Bambara groundnuts (Vigna Subterranea) and Nerica rice (Oryza Sativa) intercrop system in small holder farms in Western Kenya.
(Dynamic Network for Research Works, 2014)Agricultural production in Kenya has stagnated since 1980s resulting in malnutrition in over 89% of Kenya’s population. Food insecurity has been identified as the prime cause of malnutrition. Low agricultural productivity ... -
Growth characteristics of Bambara groundnuts (Vigna subterranea) and Nerica rice (Oryza sativa) under intercrop system.
(IDOSI Publications, 2009)Intercropping offers advantage if well planned including improved soil fertility and yields. Bambara groundnuts have been shown to yield in low fertility soils and have been described as a complete food. Nerica rice has ... -
Roots spatial distribution and growth in bambara groundnuts (Vigna subterranea) and NERICA rice (Oryza sativa) intercrop system
(Asian Research Publishing Network (ARPN)., 2010)Intercropping offers advantages if well planned including improved soil fertility and yields. Bambara groundnuts have been shown to yield in low fertility soils and have been described as a complete food. NERICA rice has ... -
Responses of ecosystem carbon dioxide fluxes to soil moisture fluctuations in a moist Kenyan savanna
(Cambridge University Press, 2010-11-01)act: Measurements were conducted within a fence-exclosure between February 2008 and July 2009 to investigate the influence of soil moisture on ecosystem CO2 fluxes in a Themeda irifl/idra-dominated grassland of a humid ... -
Patterns of CO2 exchange and productivity of the herbaceous vegetation and trees in a humid savanna in western Kenya
(Springer Science+ Business Media Dordrecht, 2015)Factors governing the dynamics between woody and herbaceous vegetation in the savanna are of ecological interest since they determine ecosystem productivity and stability. Field measurements were conducted in a humid savanna ... -
Identification of QTL for Striga hermonthica Resistance Using Backcross Population Derived from a Cross between Oryza sativa (cv. Nipponbare) and O. rufipogon
(Canadian Center of Science and Education, 2015-02-01)The obligate root hemiparasite, Striga hermonthica (Del.) Benth., native to sub-Saharan Africa causes serious economic constraint to cereal production. Studies on Striga spp. interactions with rice are desirable as it is ...