Iron toxicity symptoms in yams (Dioscorea spp.) grown in water culture

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 leave...

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Bibliographic Details
Published in:Tropical science 2006-09, Vol.46 (3), p.160-165
Main Authors: Shiwachi, H, Kikuno, H, Okonkwo, CC, Asiedu, R
Format: Article
Language:English
Subjects:
Dioscorea
iron toxicity
water culture
yams
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Summary: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 leaves, stems and roots, and root length compared to the control. The corresponding values for D. rotundata variety TDr 89/02565 were 34–59%. Tuber weight in D. rotundata variety TDr 89/02565 was increased by the iron treatments but the foliar symptoms of iron toxicity reported for other crops were not observed. Copyright © 2006 John Wiley & Sons, Ltd
ISSN:0041-3291
1556-9179
DOI:10.1002/ts.172