Remobilization and utilization of phosphorus in wheat cultivars under induced phosphorus deficiency |
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| Authors: | Muhammad Abbas Javaid Ahmed Shah Muhammad Irfan Muhammad Yousuf Memon |
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| Institution: | Soil and Environmental Sciences Division, Nuclear Institute of Agriculture (NIA), Tando Jam, Sindh, Pakistan |
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| Abstract: | A solution culture study was conducted to compare the phosphorus (P) remobilization efficiency of four wheat cultivars under induced P deficiency. Wheat cultivars, i.e. Sarsabz, NIA-Sunder, NIA-Amber and NIA-Saarang were initially grown on adequate P nutrition for 30 days and then exposed to P-free nutrient solution for next 15 days to study P remobilization. Completely randomized design (CRD) with ten replicates per cultivar was employed. Cultivars varied for biomass production, P concentration, P uptake, and P utilization efficiency at both harvests. Overall, more than 75% of absorbed P was mobilized from older leaves to younger leaves as well as roots of all cultivars during P-omission period. However, cultivars could not produce significant variations (P < 0.05) in P remobilization, which implied that P remobilization was only a stress response to P deficiency in wheat cultivars and it could not be related to P utilization efficiency of these cultivars. |
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| Keywords: | hydroponics phosphorus p-use efficiency re-translocation wheat |
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