Effect of ozone stress on the absorption, distribution, and utilization of nitrogen in rice under different planting densities

B. Peng; P. Li; S. Lai; Y. Wang; L. Yang

doi:10.1556/0806.46.2018.052

Cereal Research Communications

Volume/Issue:: Volume 47: Issue 1

Effect of ozone stress on the absorption, distribution, and utilization of nitrogen in rice under different planting densities

Authors:

B. Peng

B. Peng Yancheng Institute of Technology, Yancheng 224051, China
Yangzhou University, Yangzhou 225009, China

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P. Li

P. Li Yangzhou University, Yangzhou 225009, China

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S. Lai

S. Lai Yangzhou University, Yangzhou 225009, China

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Y. Wang

Y. Wang Yangzhou University, Yangzhou 225009, China

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L. Yang

L. Yang Yangzhou University, Yangzhou 225009, China

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Pages:: 182–190

Online Publication Date:: Mar 2019

Publication Date:: 01 Mar 2019

Article Category:: Research Article

DOI:: https://doi.org/10.1556/0806.46.2018.052

Keywords:: rice; ozone; planting density; nitrogen

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High ozone (O₃) can cause great damage to plants. However, the effect of high O₃ on nitrogen (N) absorption, distribution, and utilization in rice at different growth stages under different planting densities is poorly understood. In the present study, a conventional cultivar (Yangdao 6) and a hybrid cultivar (II You 084) with different planting densities were exposed to an elevated amount of O₃ (E-O₃; 50% higher than that of the control, C-O₃) under a freeair gas concentration enrichment (FACE) system. N absorption, distribution, and utilization of the green leaves, stems, and shoots at tillering, jointing heading, and maturity were investigated. Results showed that E-O₃ significantly increased the N content in the shoots of Yangdao 6 by 7.5%, 12.7%, and 19.6%, respectively, at jointing, heading, and maturity. Also, the N content in the shoots of II You 084 increased by 5.4%, 6.5%, and 8.4% at the corresponding growth stage upon E-O₃ application. E-O₃ significantly decreased N accumulation of II You 084 by 8.3%, 4.9%, 4.7%, and 19.2%, respectively, at tillering, jointing, heading, and maturity. Further, E-O₃ had a decreasing effect on the N distribution in green leaves (p ≤ 0.05) of both cultivars, but exerted an increasing effect on that in the stems of both cultivars (p ≤ 0.05). In addition, E-O₃ significantly decreased the N use efficiency (NUE) for biomass of the two cultivars in all growth stages. These results revealed that E-O₃ could increase the N content in rice plants but decrease the N accumulation and utilization in both cultivars. The effects of E-O₃ on N absorption, distribution, and utilization were not affected by planting density.

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Cereal Research Communications A Quarterly of the Cereal Research Non-Profit Ltd. Company

Print ISSN:: 0133-3720

Online ISSN:: 1788-9170

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Cereal Research Communications
Language	English
Size	A4
Year of Foundation	1973
Volumes per Year	1
Issues per Year	4
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0133-3720 (Print)
ISSN	1788-9170 (Online)