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Scarcity and/or high cost of healthy seed yams are the greatest constraints in yam production in Nigeria and probably across the West African Yam belt. Scientists at the National Root Crops Research Umudike developed the yam minisett technique of seed yam production in 1982 but nearly three decad...


Ikeorgu, J.G.Mazza, M.A.Okonkwo, C.Kikuno, H.[Advances in seed yam propagation methods in Nigeria]Advances in seed yam propagation methods in Nigeria

This study was designed to evaluate the effects of some root - promoting substances on rooting andmini tuber formation using vine cuttings obtained from two genotypes (TDr 335 and TDr 93 - 49) of whiteyam (D. rotundata). The ashes were obtained from rice straw, bamboo, Gliricidia sepium, dry leav...


Agele, S.O.Ayankanmi, T.G.Kikuno, H.[Effects of synthetic hormone substitutes and genotypes on rooting and mini tuber production of vines cuttings obtained from white yam (Dioscorea rotundata, Poir)]Effects of synthetic hormone substitutes and genotypes on rooting and mini tuber production of vines cuttings obtained from white yam (Dioscorea rotundata, Poir)

Growth of varieties of Dioscorea alata and D. rotundata were stunted when they were grown in nutrient solutions containing 5 to 60 mg l−1 Fe. In D. alata variety TDa 95/00361, plants grown in 60 mg l−1 Fe solution exhibited reductions of 29–65% in plant height, leaf length and width, number of le...


Shiwachi, H.Kikuno, H.Okonkwo, C.C.Asiedu, Robert[Iron toxicity symptoms in yams (Dioscorea spp.) grown in water culture]Iron toxicity symptoms in yams (Dioscorea spp.) grown in water culture

Single node cuttings from pathogen-tested in vitro plantlets of white guinea yam (D. rotundata), cultivar TDr 93–23, were cultured in tuberization and half- and full-strength Murashige and Skoog media with 5% or 8% sucrose, with or without agar, in light or darkness and at 25 or 18°C. Microtuberi...


Balogun, M.Fawole, I.Ng, S.Y.C.Ng, N.Q.Shiwachi, H.Kikuno, H.[Interaction among cultural factors in microtuberization of white yam (Dioscorea rotundata)]Interaction among cultural factors in microtuberization of white yam (Dioscorea rotundata)
Kikuno, H.Matsumoto, R.Shiwachi, H.Asiedu, Robert[Effect of sucrose treatment on root, shoot and tuber formation of vine cuttings of yams (Dioscorea spp.)]Effect of sucrose treatment on root, shoot and tuber formation of vine cuttings of yams (Dioscorea spp.)
Kikuno, H.Matsumoto, R.Shiwachi, H.Toyohara, H.Asiedu, Robert[Comparative effects of explants sources and age of plant on rooting, shooting and tuber formation of vine cuttings of yams (Dioscorea spp.)]Comparative effects of explants sources and age of plant on rooting, shooting and tuber formation of vine cuttings of yams (Dioscorea spp.)

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

Kikuno, H.Oladimeji, Z.Ebuehi, A.Shiwachi, H.Onjo, M.Asiedu, Robert[Effect of n-propyl dihydrojasmonate (PDJ) on in vitro growth of yam (Dioscorea spp.) explants]Effect of n-propyl dihydrojasmonate (PDJ) on in vitro growth of yam (Dioscorea spp.) explants
Akoroda, M.O.Amegbeto, K.Asiedu, RobertAttey, A.N.Baah, F.Bakam, I.Bandyopadhyay, RanajitBoivin, M.Boons, P.Cornet, D.Coyne, D.L.David, S.Dixon, A.Dumet, D.Ezedinma, C.Gockowski, J.Goergen, Georg E.Gyamfi, I.Hanna, R.Halos-Kim, L.Hauser, S.Hughes, J.Kikuno, H.Kolesnikova-Allen, M.Legg, C.Legg, J.P.Lema, A.Lemchi, J.Lokko, Y.Makinde, K.Mahungu, N.M.Maroya, N.G.Maziya-Dixon, B.B.Mkumbira, J.Mva Mva, J.Mwangi, M.Nguimgo, B.Nielsen, O.Nkamleu, G.B.Nolte, C.Norgrove, L.Ogbe, F.Okafor, C.Okechukwu, R.Okoro, E.Patino, M.Sanni, L.O.Shiwachi, H.Ssemakula, G.N.Tarawali, G.Tenkouno, A.Tindo, M.Toko, M.Weise, S.F.Wendt, J.Yapo Assamoi, A.[Program E: Enhancing livelihoods in the humid and subhumid zones of West and Central Africa through profitable and sustainable intensification of diverse agricultural systems]Program E: Enhancing livelihoods in the humid and subhumid zones of West and Central Africa through profitable and sustainable intensification of diverse agricultural systems

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