Assessment of growth, physiological, and yield attributes of wheat cultivar HD 2967 under elevated ozone exposure adopting timely and delayed sowing conditions

Environmental Science and Pollution Research International
Annesha GhoshS B Agrawal

Abstract

The present study was conducted to assess the impact of elevated levels of O3 and shifting of crop calendar practice, singly, and in combination on Triticum aestivum cv. HD 2967 on its growth, gas exchange parameters, and yield attributes in open-top chambers (OTCs). Two sowing dates were considered: timely sown and late sown. Late sowing was delayed by 20 days from the timely sowing date. The result revealed that wheat plants under elevated O3 and timely sown conditions (ET) showed reductions in growth parameters, while such effects were synergistic when plants were exposed to elevated O3 under late sown conditions (EL). Photosynthetic rate, stomatal conductance, and water use efficiency reduced significantly under EL followed by ET and AL as compared with AT (ambient O3 + timely sown) whereas transpiration rate showed maximum increment under EL. Grain yield reduced by 45.3% in EL as compared with AT and 16.2% in ET as compared with AT. The growth parameters and yield attributes obtained from the present experiment revealed that (i) O3 is affecting the growth and productivity of the wheat and (ii) late sowing practice has not proved to be a feasible adaptation strategy for the wheat cultivation against O3-induced production lo...Continue Reading

References

Mar 13, 2012·Annual Review of Plant Biology·Elizabeth A AinsworthLisa D Emberson
Jul 23, 2013·Environmental Science and Pollution Research International·Richa Rai, Madhoolika Agrawal
Oct 12, 2013·Environmental Science and Pollution Research International·Aditya Abha SinghMadhoolika Agrawal
Nov 5, 2014·Proceedings of the National Academy of Sciences of the United States of America·Jennifer Burney, V Ramanathan
Aug 11, 2015·Journal of Environmental Sciences (China)·Zhilin ZhuFranz X Meixner
Nov 19, 2015·Proceedings of the National Academy of Sciences of the United States of America·Justin M McGrathElizabeth A Ainsworth
Jul 18, 2017·The Science of the Total Environment·Malin C BrobergHåkan Pleijel
Mar 5, 2018·Environmental Monitoring and Assessment·Aditya Abha SinghShashi Bhushan Agrawal
Jan 2, 2019·The Science of the Total Environment·Durgesh Singh YadavMadhoolika Agrawal

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