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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/9496

Title: Effects of Arbuscular Mycorrhizal Inoculation and Phosphorus Application on Yield and Nutrient Uptake of Yam
Authors: Dare, M. O.
Abaidoo, R. C.
Fagbola, O.
Asiedu, R.
Keywords: Arbuscular Mycorrhizal inoculation
Nutrient acquisition
Yam-based systems
Issue Date: 2010
Publisher: Communications in Soil Science and Plant Analysis
Citation: Communications in Soil Science and Plant Analysis 41 :2729-2743, 2010
Abstract: To be sustainable, production in the traditional yam cropping system, [aced with declining soil fertiliry. could benefit from yam-arbuscular mycorrhiizial (AM) symbiosis, which can improve nutrient uptake, disease resistance, and drought tolerance in plants. However, only limited information exists about AM colonization of yatn. A pot experiment was conducted to collect information on the response of two genotypes (Dioscorea rotundata accession TDr 97/00903 and D. alata accession TDa 297) TO AM inoculation (witli and without) and phosphorus (P) (0, 0.05, 0.5, and 5 IIIg P kg:' soil). Factorial combinations of the treatments were arranged in a completely randomized design with [our replicates. The percentage of AM colonization was significantly lowered at 5 IIlg P kg-I soil rate in mycorrhizal plants of both genotypes. TDr 97/00903 showed more responsiveness TO AM inoculation than TDa 297. The greatest AM responsivencssfor tuber yield (52%) was obtained at 0.5 mg P kg-J soil rate lor TD,. 97/00903. Mycorrhizal inoculation significantly increased root dry weight and tuber Yield of TDr:97/00903 with the greatest values obtained at the 0.5 mg P kg:' soil rare. Atbuscular mycorrhizal inoculation did not lead to significant IP < 0.05) changes in root length and area, Phosphorus application significantly increased the shoot dry weight and root diameter ofTDa 297, Uptake of P was greatest at 0.5 mg P kg-I soil in both genotypes and was significantly influenced by AM inoculation. Nitrogen (N) and potassium IK) uptake were greatest in mycorrhizal plants at 0.05 mg P kg:' soil for TDr 97/00903 but at 0.5 mg P ss" soil of non mvcorrhiral plants of TDa 297. The increased tuber yield and nutrient uptake observed ill the mycorrhizal plants indicate the potential for the improvement of nutrient acquisition and tuber yield through AM symbiosis.
Description: An article published by Communications in Soil Science and Plant Analysis 41 :2729-2743, 2010
URI: http://hdl.handle.net/123456789/9496
Appears in Collections:College of Science

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