Impact of CO2 Enrichment and Variable Nitrogen Supplies on Composition and Partitioning of Essential Nutrients of Wheat |
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Authors: | Madan Pal LS Rao AC Srivastava V Jain UK Sengupta |
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Institution: | (1) Division of Plant Physiology, Indian Agricultural Research Institute, New Delhi, 110012, India;(2) Sher-e-Kashmir University of Agricultural Sciences and Technology, RS Pura, Jammu, India |
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Abstract: | This study was conducted to determine effects of nitrogen supply (75 and 150 kg(N) ha−1) and CO2 enrichment on partitioning of macro and micro nutrients in wheat (Triticum aestivum L. cv. HD-2285). Plants were grown from seedling emergence to maturity inside open top chambers under ambient CO2 (CA, 350 ± 50 μmol mol−1) and elevated CO2 (CE, 600 ± 50 μmol mol−1). Leaves, stems and roots of the same physiological age were analyzed for carbon, nitrogen, calcium, copper, iron, zinc and
manganese content at 40, 60 and 90 d after germination. C, Cu, Mn and Zn content was higher in the stem, leaves and roots
on dry mass basis under CE than CA. However, N and Fe contents decreased in CE grown plants. Ca content was unaffected due
to CE and variable N supplies.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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Keywords: | calcium carbon copper iron manganese nitrogen Triticum aestivum zinc |
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