中国水稻科学 ›› 2012, Vol. 26 ›› Issue (3): 320-324.DOI: 10.3969/j.issn.10017216.2012.03.010

• 研究报告 • 上一篇    下一篇

增氧对水稻根系生长与氮代谢的影响

徐春梅,王丹英,陈松,陈丽萍,章秀福*   

  1. 中国水稻研究所 水稻生物学国家重点实验室, 浙江 杭州 310006;
  • 收稿日期:2011-08-08 修回日期:2012-01-13 出版日期:2012-05-10 发布日期:2012-05-10
  • 通讯作者: 章秀福*
  • 基金资助:

    浙江省自然科学基金资助项目(Y3100270); 国家科技支撑计划资助项目(2011BAD16B14)。

Effect of Aeration on Root Growth and Nitrogen Metabolism in Rice

XU  Chunmei,  WANG  Danying, CHEN Song, CHEN  Liping, ZHANG  Xiufu*   

  1. State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China;
  • Received:2011-08-08 Revised:2012-01-13 Online:2012-05-10 Published:2012-05-10
  • Contact: ZHANG Xiufu*

摘要: 以国稻6号(杂交籼稻)和秀水09(粳稻)为材料,在水培条件下研究通气增氧对水稻苗期根系生长和氮代谢的影响。结果表明,增氧处理水稻根系干物质积累量、根长、根体积、根系活力以及吸收面积较对照均有不同程度增加。水稻根系硝态氮(NO3N)含量、游离氨基酸和可溶性糖含量均增加。谷氨酸合成酶(GS)、谷草转氨酶(GOT)和谷丙转氨酶(GPT)活性均增强。在本试验条件下,增氧能显著提高粳稻秀水09苗期根系氮代谢相关酶生理活性;但增氧对杂交籼稻国稻6号根系氮代谢相关酶生理活性影响不显著,说明通气增氧对水稻根系氮代谢生理活性的影响可能与水稻基因型有关。

关键词: 水稻, 增氧, 根系, 氮代谢

Abstract: In order to clarify the effects  of aeration on   root nitrogen metabolism in rice seedling, root growth, the activities of glutamine synthetase (GS), glutamic acidpyruvic acid transaminase (GPT), glutamic acid oxaloacetate transaminase (GOT), the contents of nitrate (NO3N), free amino acids and sugar content in root were investigated under continous aeration treatment in hydroponics with indica  hybrid rice combination Guodao 6 and japonica Xiushui 09 as material. The results showed that rice seedlings grown in oxygenation solutions had higher root dry matter, longer root length, stronger root activity and larger root absorption area, compared with the control. In addition, the contents of nitrate, soluble sugar, root vigor, the activities of GS, GOT and GPT of aerationtreated rice plants were higher than those of the control. The activities of enzymes involved in root nitrogen metabolism of “Xiushui 09” were enhanced by oxygenation. However, oxygenation had no significant influence on root nitrogen metabolism of Guodao 6, which suggested  that oxygenation effect on rice root nitrogen metabolism might be genotypespecific.

Key words: rice , aeration, root physiology, nitrogen metabolism

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