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]
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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.
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Ng, S.Y.C.
,
Ng, N.Q.
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Shiwachi, H.
,
Kikuno, H.
,
[Interaction among cultural factors in microtuberization of white yam (Dioscorea rotundata)]
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Interaction among cultural factors in microtuberization of white yam (Dioscorea rotundata)
Kikuno, H.
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Matsumoto, R.
,
Shiwachi, H.
,
Asiedu, Robert
,
[Effect of sucrose treatment on root, shoot and tuber formation of vine cuttings of yams (Dioscorea spp.)]
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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.)]
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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]
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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]
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Effect of n-propyl dihydrojasmonate (PDJ) on in vitro growth of yam (Dioscorea spp.) explants
The genus Dioscorea is considered to be one of the most difficult groups for cyto-taxonomic studies because of the large number and small size of the chromosomes. The objective of the present study was to develop an efficient method of chromosome observation by identifying the optimum time for co...
Babil, P.K.
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Kikuno, H.
,
Shiwachi, H.
,
Toyohara, H.
,
Fujigaki, J.
,
Fujimaki, H.
,
Asiedu, Robert
,
[Optimum time for collection of root samples for chromosome observation in yams (Dioscorea spp.)]
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Optimum time for collection of root samples for chromosome observation in yams (Dioscorea spp.)