Leaf age effects on the leaf conductance to water vapour diffusion of the adaxial and abaxial leaf surfaces were measured in the morning and in the afternoon on 17 different plantain and banana (Musa spp.) genotypes. The irradiance levels increased three-fold while leaf to air vapour pressure def...
Ekanayake, I.J.
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Ortiz, R.
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Vuylsteke, D.R.
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[Influence of leaf age, soil moisture, VPD and time of day on leaf conductance of various Musa genotypes in a Humid Forest Moist Savanna transition site]
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Influence of leaf age, soil moisture, VPD and time of day on leaf conductance of various Musa genotypes in a Humid Forest Moist Savanna transition site
A substantial impact on Africa agriculture can be made through research on crop improvement for the extensive inland valley agro-ecosystems (IVS) extending from the humid forest to the savanna zones in sub saharan Africa. Systematic surveys of farmers have shown that cassava is a favoured upland ...
Ekanayake, I.J.
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Dixon, A.
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Asiedu, Robert
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Izac, A.M.
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[Improved cassava for inland valley agroecosystems]
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Improved cassava for inland valley agroecosystems
Cultivated plantains and bananas (Musa spp.) are important staple crops in the humid forest and midaltitude ecologies of sub-Saharan Africa. Their water requirement is relatively high and they are very sensitive to dry soil conditions, which greatly limits their range of cultivation. While long-t...
Ekanayake, I.J.
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Ortiz, R.
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Vuylsteke, D.R.
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[Physiological factors in drought tolerance of various Musa genotype]
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Physiological factors in drought tolerance of various Musa genotype
The distribution of the cyanogenic potential in cassava germplasm has been found to be a continuum from very low values to high levels. Within the same genotype, the cyanogenic potential is affected by the planting season; it is low when planted at the beginning of the rainy season, and high when...
Bokanga, M.
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Ekanayake, I.J.
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Dixon, A.
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Porto, M.
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[Genotype environment interactions for cyanogenic potential in cassava]
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Genotype environment interactions for cyanogenic potential in cassava
An extensively distributed root system may reduce the probability of crop failure during periods of restricted water supply . A quantitative measure of root distribution in the soil profile, i .e . pulling resistance of roots (PR), was tested at two moderately droughted tropical field sites . A t...
Ekanayake, I.J.
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Midmore, D.J.
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[Genotypic variation for root pulling resistance in potato and its relationship with yield under water deficit stress]
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Genotypic variation for root pulling resistance in potato and its relationship with yield under water deficit stress
Leaf resistances of 14 cultivated potato genotypes ( Solanum spp.) and three tuber-bearing wild Solanum species were compared when plants were grown under water stress at two tropical sites. Factors investigated were diurnal changes in leaf resistance, the effect of plant age, transient drought v...
Ekanayake, I.J.
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Jong, J.P. de
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[Stomatal response of some cultivated and wild tuberbearing potatoes in warm tropics as influenced by water deficit stress]
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Stomatal response of some cultivated and wild tuberbearing potatoes in warm tropics as influenced by water deficit stress
Flower initiation in some plant species is associated with the physical and chemical soil characteristics such as the availability of certain mineral elements and soil moisture status. The objective of this study was to examine the effects of soil physicochemical traits on the differential flower...
Simwambana, M.S.C.
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Ekanayake, I.J.
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Ferguson, T.U.
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[Growth and flowering behavior of four cassava genotypes in two soil types and locations in southern Nigeria]
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Growth and flowering behavior of four cassava genotypes in two soil types and locations in southern Nigeria
Cyanide is toxic to most living beings. Cassava roots release cyanide in the human body if they are not properly processed before consumption. The environmental effects on the cyanogenic potential (0.1» and some cuIinary qualities of five divergent cassava clones were studied in two agro-ecologic...
Githunguri, C.
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Ekanayake, I.J.
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Imung, J.
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Chweya, J.
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[Environmental effects on the tuberous roots cyanogenic potential, sugar content and taste of divergent cassava clones]
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Environmental effects on the tuberous roots cyanogenic potential, sugar content and taste of divergent cassava clones
Okogbenin, E.
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Porto, M.
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Dixon, A.
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Ekanayake, I.J.
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[Expanding the genetic base of cassava in Africa: progress and prospects]
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Expanding the genetic base of cassava in Africa: progress and prospects