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Most cassava (Manihot esculenta Crantz) improvement programs depend on the range of variability available within the cultigen for breeding varieties adapted to target environments. Efforts by some programs to introduce additional variability from wild Manihot species into cassava have led to impr...


Asiedu, RobertHahn, S.K.Bai, K.V.Dixon, A.[Interspecific hybridization in the genus Manihot progress and prospects]Interspecific hybridization in the genus Manihot progress and prospects

Thirty isolates of Colletotrichum gloeosporioides f. sp. manihotis causal organism of cassava anthracnose disease (CAD), were collected from cankers on cassava stems in cassava-growing zones of Nigeria. Using a pathogenicity test, five virulent isolates (05FCN, 10FCN, 12FCN, 18FCN and 26FCN) were...


Fokunang, C.N.Ikotun, T.Dixon, A.[Mycelial growth, sporulation and spore germination of virulent Colletotrichum gloeosporiodes f. sp. manihotis isolates under selected growth conditions]Mycelial growth, sporulation and spore germination of virulent Colletotrichum gloeosporiodes f. sp. manihotis isolates under selected growth conditions

Stable as well as adaptable genotypes of high-yielding cassava cultivars, should be developed and made available to farmers, to ensure increases in cassava production in a target region or country in sub-Saharan Africa. As farmer-to-farmer contact is the primary means of diffusion of new crop var...


Dixon, A.Asiedu, RobertHahn, S.K.[Genotypic stability and adaptability: analytical methods and implications for cassava breeding for low input agriculture]Genotypic stability and adaptability: analytical methods and implications for cassava breeding for low input agriculture

Multilocational trials were conducted in several agroecological zones in West Africa to assess the magnitude of genotype x environment (G x E) interaction and to identify stable varieties which could be used in breeding programs in the region. The reaction of the varieties to major cassava diseas...


Otoo, J.Dixon, A.Asiedu, RobertOkeke, J.E.Maroya, N.Tougnon, K.Okoli, O.Tetteh, J.P.Hahn, S.K.[Genotype environment interaction studies with cassava]Genotype environment interaction studies with cassava

An agroecologically-based germplasm enhancement strategy to further broaden the genetic base of cassava in selected ecologies of Africa was initiated by CIAT and IITA in 1990. Crosses are being made at CIAT, in Colombia, using parents adapted to four different agroecologies of South America with ...


Porto, M.C.Asiedu, RobertDixon, A.Hahn, S.K.[An agroecologically oriented introduction of cassava germplasm from Latin America into Africa]An agroecologically oriented introduction of cassava germplasm from Latin America into Africa

Research on the resistance of cassava to fire is scarce because ordinarily researchers would not set their cassava farms on fire for such evaluation. Stems rendered useless by fire were commonly reported by farmers but no information on root yields and shoot regeneration. This study compared the ...


Asadu, C.L.A.Unagwu, B.O.Dixon, A.Okechukwu, R.Ilona, P.Asadu, A.N.[Cassava, plantain and moringa grown in an Alfisol and their resilience to bush fire in eastern Nigeria]Cassava, plantain and moringa grown in an Alfisol and their resilience to bush fire in eastern Nigeria
Sanni, L.O.Maziya-Dixon, B.B.Onabolu, A.O.Arowosafe, B.E.Okoruwa, A.E.Okechukwu, R.U.Dixon, A.ILona, P.Ezedinma, C.Ssemakula, G.N.Lemchi, J.Akoroda, M.O.Ogbe, F.Tarawali, G.Okoro, E.Geteloma, C.[Recette de manioc Pour la securite Alimentaire du menage]Recette de manioc Pour la securite Alimentaire du menage

Various factors influencing the adoption of weed control technologies in Abia State were studied. A multi-stage random sampling procedure was used to select 510 cassava farmers in 2006. Results showed that 56.5% of the respondents were females, that are largely (90.2%) in their productive years. ...


Udensi, U.Tarawali, G.Ilona, P.Okoye, B.C.Dixon, A.[Adoption of chemical weed control technology among cassava farmers in south eastern Nigeria]Adoption of chemical weed control technology among cassava farmers in south eastern Nigeria

Genotypic differences in the ability of immature leaf lobes and apical shoot meristems of cassava to form primary somatic embryos in P-CIM were observed (p ≤ 0.05). The mean number of apical meristems forming primary organized embryogenic structures when cultured in embryo induction medium supple...


Hankoua, B.Ng, S.Fawole, I.Puonti-Kaerlas, J.Pillay, M.Dixon, A.[Regeneration of a wide range of African cassava genotypes via shoot organogenesis from cotyledons of maturing somatic embryos and conformity of the fieldestablished regenerants]Regeneration of a wide range of African cassava genotypes via shoot organogenesis from cotyledons of maturing somatic embryos and conformity of the fieldestablished regenerants

Pathogenic variation of Botryodiplodia theobromae, the cause of cassava root rot disease in Nigeria, was evaluated with 84 isolates from three different ecological zones and four genetically diverse cassava genotypes using root slice inoculation assay. Significant variation was observed for the a...


Onyeka, T.Ekpo, E.Dixon, A.[Virulence and hostpathogen interaction of Botryodiplodia theobromae isolates of cassava root rot disease]Virulence and hostpathogen interaction of Botryodiplodia theobromae isolates of cassava root rot disease

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