Nitrous oxide emission and mitigation from wheat agriculture: association of physiological and anatomical characteristics of wheat genotypes

Environmental Science and Pollution Research International
Leena Borah, Kushal Kumar Baruah

Abstract

Agriculture is an important source of emission of the greenhouse gas nitrous oxide (N2O). The observed differences in N2O emission among different varieties of agricultural crops can be a key factor for developing N2O emission reduction strategies. N2O emissions were estimated from three varieties of wheat viz. Sonalika, DBW 39, and K 0307 during 2010-2011 in an attempt to identify plant physiological and anatomical factors contributing to differences in gas emissions within the varieties. Sonalika was identified as a low N2O emitting variety and DBW 39 as high emitting when grown in a uniform field condition. The experiment was repeated in 2011-2012 selecting low emitting Sonalika and high emitting variety DBW 39 for further confirmation of the results obtained during the first year of experimentation. Important plant factors namely rate of photosynthesis and transpiration in flag leaf, stomatal frequency of adaxial flag leaf surface, and size of the xylem vessels (mean vessel size of node, stem, and root) were studied, and their relationship with N2O flux was worked out. A good correlation between transpiration and N2O flux was observed in this study. Scanning electron microscopic investigation revealed strong association of ...Continue Reading

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Citations

Feb 24, 2016·Environmental Science and Pollution Research International·Samuel Asumadu-Sarkodie, Phebe Asantewaa Owusu
Mar 11, 2017·Environmental Science and Pollution Research International·Nirmali Bordoloi, Kushal Kumar Baruah
Apr 13, 2019·Environmental Science and Pollution Research International·Dipti Gorh, Kushal Kumar Baruah

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