Fifteen cassava (Manihot esculentaCrantz) genotypes were grown at two field sites of Nigeria from 1994 to 1996 (Ibadan: 28±5°C, altitude 210 masl and Jos: 18±5°C, altitude of 1260 masl) to evaluate the use of chlorophyll fluorescence in screening for cold tolerance in cassava. At 12 months after ...
Togun, A.O.
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Akparobi, S.O.
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Ekanayake, I.J.
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[Field studies on chlorophyll a fluorescence for low temperature tolerance testing of cassava (Manihot esculenta Crantz)]
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Field studies on chlorophyll a fluorescence for low temperature tolerance testing of cassava (Manihot esculenta Crantz)
Phosphorus fertilizer was applied at two rates to four soyabean varieties of different duration to maturity at four sites. The P rate had no significant (p > 0.05) interaction with site or variety. TGx1670-1F, one of the two late varieties, had the highest levels of total P (11 kg/ha) and apparen...
Ogoke, I.J.
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Togun, A.O.
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Carsky, R.J.
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Dashiell, Kenton E.
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[Phosphorus recovery from triple superphosphate by soyabean in the Guinea savanna of Nigeria]
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Phosphorus recovery from triple superphosphate by soyabean in the Guinea savanna of Nigeria
Twelve cassava genotypes were evaluated in the field in two cropping seasons at two locations in Nigeria for their reaction to cassava mosaic disease (CMD), cassava bacterial blight (CBB) and cassava green mite (CGM), using visual injury scores as the index for resistance. Lowest indices for CMD ...
Akparobi, S.O.
,
Togun, A.O.
,
Ekanayake, I.J.
,
[Assessment of cassava genotypes for resistance to cassava mosaic disease, cassava bacterial blight and cassava green mite at a lowland and mid-altitude site in Nigeria]
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Assessment of cassava genotypes for resistance to cassava mosaic disease, cassava bacterial blight and cassava green mite at a lowland and mid-altitude site in Nigeria
Hermetic cold storage without previous drying (wet–cold storage) was experimented for the preservation of yam pollen grains. Pollens collected from white yam D. rotundata and a wild relative, D. praehensilis, were stored at -80, -20, 5, and 150C in sealed packs for 2 years. Pollen samples were dr...