华北农学报 ›› 2010, Vol. 25 ›› Issue (6): 221-224. doi: 10.7668/hbnxb.2010.06.043

所属专题: 白菜 盐碱胁迫

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铵态氮影响小白菜硝酸盐积累及其机制研究

陈龙正, 梁亮, 徐海, 宋波, 苏小俊, 袁希汉   

  1. 江苏省农业科学院蔬菜研究所 江苏 南京 210014
  • 收稿日期:2010-10-09 出版日期:2010-12-28
  • 通讯作者: 袁希汉(1955-),男,江苏宝应人,研究员,主要从事蔬菜遗传育种研究。
  • 作者简介:陈龙正(1980-),男,山东日照人,助理研究员,博士,主要从事蔬菜遗传育种研究。
  • 基金资助:
    江苏省自主创新基金(CX(09)604);国家科技支撑计划(2006BAD13B06;2006BAD01A7)

Effects of NH4+-N on Nitrate Accumulation and Its Mechanism of Pak-choi

CHEN Long-zheng, LIANG Liang, XU Hai, SONG Bo, SU Xiao-jun, YUAN Xi-han   

  1. Vegetable Research Institute,Jiangsu Academy of Agriculture Sciences,Nanjing 210014,China
  • Received:2010-10-09 Published:2010-12-28

摘要: 采用溶液培养试验,研究了铵态氮对6个小白菜材料的硝酸盐积累特点和对硝酸还原酶活性(NRA)的影响。同时探讨了铵态氮对根系吸收NO3-的速率及对品质与产量的影响。结果表明,铵态氮能够显著降低小白菜体内硝酸盐累积,而且,本研究发现铵态氮不是通过加快硝态氮代谢降低硝酸盐累积,而是通过抑制根系对硝态氮的吸收降低硝酸盐累积。本研究还发现,适当的铵态氮和硝态氮比例能够提高小白菜产量和品质,而单一的铵态氮显著降低小白菜产量和品质。

关键词: 小白菜, 铵态氮, 硝酸盐, 硝酸还原酶, 产量, 品质

Abstract: The effects of NH4+一N on nitrogen accumulation and NRA in six genotype of pakchoi were studied by using solution culture.Meanwhile, the qualities, yield and the absorption rate of NO3-;in root under NH4+一N treatment were investigated.The results indicated that the nitrate accumulation was significantly decreased;moreover, the decrease of nitrate accumulation was caused by restraining of the absorption of NO3-;in root, while not accelerating the metabolism of NO3-一N.In addition, it was found that the qualities and the yield could be greatly improved by proper ratio of NH4+一N and NO3-一N, while, significantly decreased with NH4+-N as the single N provider.

Key words: Pak-choi, NH4+-N, Nitrate, Nitrate reductase, Yield, Quality

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引用本文

陈龙正, 梁亮, 徐海, 宋波, 苏小俊, 袁希汉. 铵态氮影响小白菜硝酸盐积累及其机制研究[J]. 华北农学报, 2010, 25(6): 221-224. doi: 10.7668/hbnxb.2010.06.043.

CHEN Long-zheng, LIANG Liang, XU Hai, SONG Bo, SU Xiao-jun, YUAN Xi-han. Effects of NH4+-N on Nitrate Accumulation and Its Mechanism of Pak-choi[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2010, 25(6): 221-224. doi: 10.7668/hbnxb.2010.06.043.

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