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Studies to quantify genetic variation in cassava germplasm, available within the national breeding programmes in Africa, have been limited. Here, we report on the nature and extent of genetic variation that exists within 1401 cassava varieties from seven countries: Tanzania (270 genotypes); Ugand...


Kawuki, Robert S.Herselman, L.Labuschagne, M.T.Nzuki, I.Ralimanana, I.Bidiaka, M.Kanyange, M.C.Gashaka, G.Masumba, E.Mkamilo, G.S.Gethi, J.Wanjala, B.W.Zacarias, A.Madabula, F.Ferguson, M.[Genetic diversity of cassava (Manihot esculenta Crantz) landraces and cultivars from southern, eastern and central Africa]Genetic diversity of cassava (Manihot esculenta Crantz) landraces and cultivars from southern, eastern and central Africa

Cassava, a staple food in sub-Saharan Africa, does not provide adequate amounts of pro-vitamin A (VA) carotenoids and has been targeted for biofortification (i.e. selectively breeding cultivars of increased nutrient density with agroeconomically acceptable characteristics). However, the accessibi...


Thakkar, S.K.Maziya-Dixon, B.B.Dixon, A.Failla, M.L.[Betacarotene micellarization during in vitro digestion and uptake by caco2 cells is directly proportional to betacarotene content in different genotypes of cassava]Betacarotene micellarization during in vitro digestion and uptake by caco2 cells is directly proportional to betacarotene content in different genotypes of cassava
Ogbe, F.Thottappilly, G.Quin, F.[Implementation in Africa of serological diagnostic test for cassava mosaic geminiviruses]Implementation in Africa of serological diagnostic test for cassava mosaic geminiviruses

Biofortification of staple crops with provitamin A (PVA) carotenoids is an innovative strategy for controlling vitamin A (VA) deficiency in low-income countries (LIC). Plant breeding programs have been successful in developing biofortified varieties of cassava, maize, and orange-fleshed sweet pot...


Haskell, M.Tanumihardjo, S.A.Palmer, A.Melse-Boonstra, AlidaTalsma, Elise F.Burri, B.[Effect of regular consumption of provitamin a biofortified staple crops on vitamin a status in populations in low-income countries]Effect of regular consumption of provitamin a biofortified staple crops on vitamin a status in populations in low-income countries

An in vitro method for assessing cassava anthracnose disease (CAD) resistance was developed as a preliminary screen to a CAD‐resistant breeding programme. Potato dextrose agar (PDA) media was amended by extracts from the stem cortex of 10 cassava cultivars (30001; 30572, 30211, 88/02549, 88/00695...


Fokunang, C.N.Dixon, Alfred G.O.Ikotun, T.Akem, C.N.Tembe-Fokunang, E.A.[Rapid screening method of cassava cultivars for resistance to Collectotrichum gloeosporioides f.sp. manihotis]Rapid screening method of cassava cultivars for resistance to Collectotrichum gloeosporioides f.sp. manihotis

Nine cassava genotypes were evaluated for their growth responses and adaptability to soil moisture stress on the field and in the screen house in Nigeria. Genotypes were evaluated in three savanna agroecologies in a randomized complete block design with three replicates. Screen house evaluation w...


Aina, O.O.Dixon, Alfred G.O.Akinrinde, E.A.[Effect of soil moisture stress on growth and yield of cassava in Nigeria]Effect of soil moisture stress on growth and yield of cassava in Nigeria

Diagnostic PCR with two specific primer pairs (NEOSSU and 8DDC) were used to monitor the establishment and geographical distribution of Brazilian isolates of Neozygites tanajoae Delalibera, Hajek and Humber (Entomophthorales: Neozygitaceae) released in Benin for the biological control of the cass...


Agboton, B.Hanna, R.Tiedemann, A. von[Molecular detection of establishment and geographical distribution of Brazilian isolates of Neozygites tanajoae, a fungus pathogenic to cassava green mite, in Benin (West Africa)]Molecular detection of establishment and geographical distribution of Brazilian isolates of Neozygites tanajoae, a fungus pathogenic to cassava green mite, in Benin (West Africa)
Díaz Tatis, Paula A.Herrera Corzo, MarianaOchoa Cabezas, Juan CMedina Cipagauta, AdrianaPrias, Monica AVerdier, ValérieChavarriaga Aguirre, PaulLópez Carrascal, Camilo E.[The overexpression of RXam1, a cassava gene coding for an RLK, confers disease resistance to Xanthomonas axonopodis pv. Manihotis]The overexpression of RXam1, a cassava gene coding for an RLK, confers disease resistance to Xanthomonas axonopodis pv. Manihotis

This is the fourth publication of a series to determine the phytoseiid mites of sub-Saharan Africa. Twenty-six phytoseiid species of the subtribes Arrenoseiina Chant & McMurtry (5 species) and Proprioseiopsina Chant & McMurtry (9 species), and tribe Typhlodromipsini Chant & McMurtry (12 species),...


Moraes, G.J. deZannou, I.D.Ueckermann, E.A.Oliveira, A.Hanna, R.Yaninek, John S.[Species of the subtribes Arrenoseiina and Proprioseiopsina (Tribe Amblyseiini) and the tribe Typhloromipsini (Acari: Phytoseiidae) from sub-Saharan Africa]Species of the subtribes Arrenoseiina and Proprioseiopsina (Tribe Amblyseiini) and the tribe Typhloromipsini (Acari: Phytoseiidae) from sub-Saharan Africa

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