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Cassava, yam, and plantain are staple food crops essential to food security in the humid and Sub-humid tropics of Africa. However, these crops have long growth cycles, high perishability and slow multiplication rates of propagation materials, and they are subject to a number of biological stresse...


Asiedu, RobertNg, S.Vuylsteke, D.R.Terauchi, R.Hahn, S.[Analysis of the need for biotechnology research on cassava, yam, and plantain]Analysis of the need for biotechnology research on cassava, yam, and plantain

Root colonization by arbuscular mycorrhiza (AM) enhances nutrient acquisition by plants and could benefit the production of yam (Dioscorea spp.). The variation in AM colonization in yam genotypes was evaluated in two experiments at four locations (Ibadan, Onne, Abuja and Ubiaja) in different agro...


Dare, M.O.Abaidoo, R.C.Fagbola, O.Asiedu, Robert[Genetic variation and genotype x environment interaction in yams (Dioscorea spp.) for root colonization by arbuscular mycorrhiza]Genetic variation and genotype x environment interaction in yams (Dioscorea spp.) for root colonization by arbuscular mycorrhiza
Dixon, A.Asiedu, RobertHahn, S.[Cassava germplasm enhancement at the International Institute of Tropical Agriculture (IITA)]Cassava germplasm enhancement at the International Institute of Tropical Agriculture (IITA)

Use of genetic resistance is the most practical and economic way to manage major diseases of yams. In a search for sources of resistance, 40 water yam (Dioscorea alata L.) accessions from Benin, Ghana, Nigeria and Puerto Rico were screened under natural disease infection conditions in Ibadan, Nig...


Egesi, Chiedozie N.Odu, B.Ogunyemi, S.Asiedu, RobertHughes, J.[Evaluation of water yam (Dioscorea alata L.) germplasm for reaction to yam anthracnose and virus diseases and their effect on yield]Evaluation of water yam (Dioscorea alata L.) germplasm for reaction to yam anthracnose and virus diseases and their effect on yield

Yam cultivation in dry season was tested in the farmer’s field at inland valley in Niger state, Nigeria. Water yam (Dioscorea alata) variety TDa 95/00328 had the greater response to the gibberellin inhibitor prohexadione-calcium (PC). The sprouting period of PC treated tuber was 21 – 27 days at D...


Shiwachi, H.Kikuno, H.Fashola, R.Asiedu, Robert[Enhancing offseason yam production in Nigeria]Enhancing offseason yam production in Nigeria

Colletotrichum gloeosporioides causes anthracnose, the most severe foliar disease of field-grown water yam (Dioscorea alata). The inheritance of resistance to a moderately virulent (FGS) strain of the pathogen was investigated in crosses between tetraploid D. alata genotypes: TDa 95/00328 (resist...


Mignouna, H.D.Abang, Mathew M.Green, K.R.Asiedu, Robert[Inheritance of resistance in water yam (Disocorea alata) to anthracnose (Colletotrichum gloeosporioides)]Inheritance of resistance in water yam (Disocorea alata) to anthracnose (Colletotrichum gloeosporioides)

Sangodoyin, O.M.Alamu, E.O.Diallo, T.A.Kolawole, P.Abass, A.B.Maziya-Dixon, B.B.Parkes, E.Awoyale, W.Buraimoh, B.Ben, J.Tran, T.Jekayinfa, S.O.Olajide, J.O.Kulakow, P.Dixon, A.Asiedu, Robert[Development and evaluation of steamer for Attieke production: a cross cutting initiative of CGIAR Research Program for Roots , Tubers and Bananas]Development and evaluation of steamer for Attieke production: a cross cutting initiative of CGIAR Research Program for Roots , Tubers and Bananas

Maroya, N.Balogun, M.Aighewi, B.A.Lasisi, J.Asiedu, Robert[Manual for clean foundation seed yam production using aeroponics system]Manual for clean foundation seed yam production using aeroponics system

To induce sprouting two gibberellin inhibitors, uniconazole-P (UP) and prohexadione-calcium (PC), were applied to foliage of white Guinea yam (Dioscorea rotundata) and water yam (D. alata) 30 days before harvest or to tubers at harvest. The tuber sprouting period was shortened by about 35 days in...


Shiwachi, H.Ayankanmi, T.G.Asiedu, RobertOnjo, M.[Influence of exogenous gibberellins inhibitors on tuber sprouting in yam]Influence of exogenous gibberellins inhibitors on tuber sprouting in yam

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