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ZJUS-B
Journal of Zhejiang University-SCIENCE B (Biomedicine & Biotechnology)  2014, Vol. 15 Issue (2): 181-193    DOI: 10.1631/jzus.B1300036
Articles     
Response of seed tocopherols in oilseed rape to nitrogen fertilizer sources and application rates
Nazim Hussain, Hui Li, Yu-xiao Jiang, Zahra Jabeen, Imran Haider Shamsi, Essa Ali, Li-xi Jiang
Key Laboratory of Crop Gene Resources of Zhejiang Province, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
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Abstract  Tocopherols (Tocs) are vital scavengers of reactive oxygen species (ROS) and important seed oil quality indicators. Nitrogen (N) is one of the most important fertilizers in promoting biomass and grain yield in crop production. However, the effect of different sources and application rates of N on seed Toc contents in oilseed rape is poorly understood. In this study, pot trials were conducted to evaluate the effect of two sources of N fertilizer (urea and ammonium nitrate). Each source was applied to five oilseed rape genotypes (Zheshuang 72, Jiu-Er-1358, Zheshuang 758, Shiralee, and Pakola) at three different application rates (0.41 g/pot (N1), 0.81 g/pot (N2), and 1.20 g/pot (N3)). Results indicated that urea increased 伪-, 纬-, and total Toc (T-Toc) more than did ammonium nitrate. N3 was proven as the most efficient application rate, which yielded high contents of 纬-Toc and T-Toc. Highly significant correlations were observed between Toc isomers, T-Toc, and 伪-/纬-Toc ratio. These results clearly demonstrate that N sources and application rates significantly affect seed Toc contents in oilseed rape.

Key words： Oilseed rape (Brassica napus L.)      Nitrogen rate      Urea      Ammonium nitrate      Data S1')" href="#">Tocopherol

The online version of this article contains supplementary materials Data S1      Table S1')" href="#">Table S1      Table S2

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Received: 31 January 2013      Published: 28 January 2014
CLC:  S311  
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Articles by authors
Nazim Hussain
Zahra Jabeen
Hui Li
Yu-xiao Jiang
Imran Haider Shamsi
Essa Ali
Li-xi Jiang
Cite this article:

Nazim Hussain, Hui Li, Yu-xiao Jiang, Zahra Jabeen, Imran Haider Shamsi, Essa Ali, Li-xi Jiang. Response of seed tocopherols in oilseed rape to nitrogen fertilizer sources and application rates. Journal of Zhejiang University-SCIENCE B (Biomedicine & Biotechnology), 2014, 15(2): 181-193.

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http://www.zjujournals.com/xueshu/zjus-b/10.1631/jzus.B1300036     OR     http://www.zjujournals.com/xueshu/zjus-b/Y2014/V15/I2/181

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