Iodine biofortification of wheat, rice and maize through fertilizer strategy

Cakmak, I. and Prom-u-thai, C and Guilherme, L.R.C. and A. Rashid, A. (2017) Iodine biofortification of wheat, rice and maize through fertilizer strategy. Plant and Soil, 418 (1-2). pp. 319-335.

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Aim Iodine (I) deficiency is distinct from other micronutrient deficiencies in human populations in having a high endemic prevalence both in well-developed and in developing countries. The very low concentration of iodine in agricultural soils and cereal-based foods is widely believed to be the main reason of iodine deficiency in humans, especially in developing countries. In the present study, the possibility of using iodine containing fertilizers for agronomic biofortification of cereal grains with iodine was studied. The aim was to establish the best application method (to the soil or as foliar spray), the best form of iodine (potassium iodate or potassium iodide) and the optimal dose of iodine. Additionally, experiments were conducted to study transport of iodine in plants and localization of iodine within the grains. Materials and methods Experiments were conducted both under greenhouse conditions and in the field on wheat (Triticum aestivum) grown in Turkey and Pakistan, on rice (Oryza sativa) grown in Brazil, Thailand and Turkey and on maize (Zea mays) grown in Turkey. The iodine concentration in the grain, localization of iodine in different grain fractions of wheat (i.e., endosperm, bran and embryo) and iodine concentration of both brown rice and polished rice was analyzed. In short-term experiments, the translocation of iodine from older into younger leaves was also studied. Inductively coupled plasma mass spectrometry (ICP-MS) was used for analysis of iodine in plant and soil samples.

Item Type: Article
Uncontrolled Keywords: Agronomic biofortification Iodine Maize Potassium iodate Potassium iodide Potassium nitrate Rice Surfactant Wheat
Author Affiliation: Faculty of Engineering and Natural Sciences, Sabanci University, 34956 Istanbul, Turke
Subjects: Crop Improvement
Divisions: Other Crops
Depositing User: Mr T L Gautham
Date Deposited: 31 May 2018 10:41
Last Modified: 31 May 2018 10:41

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