| 不同铁形态对水稻根表铁膜及铁吸收的影响 |
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| 引用本文： | 傅友强,梁建平,于智卫,吴道铭,蔡昆争,沈宏.不同铁形态对水稻根表铁膜及铁吸收的影响[J].植物营养与肥料学报,2011,17(5):1050-1057. |
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| 作者姓名： | 傅友强 梁建平 于智卫 吴道铭 蔡昆争 沈宏 |
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| 作者单位： | 1. 华南农业大学资源环境学院,广东广州,510642
2. 华南农业大学农学院,广东广州,510642 |
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| 基金项目： | 国家自然科学基金项目(30771294,31071847); 国际科学基金(C/3042-2,3); 农业部生态农业重点实验室开放基金项目资助 |
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| 摘 要： | 通过溶液培养试验研究了FeCl2?4H2O和FeCl3?6H2O对水稻根表铁膜数量及铁吸收的影响。结果表明,FeCl2处理时水稻根表铁膜浓度是FeCl3处理的197%～233%。利用EDTA-BPDS对铁膜形态分析看出,根表铁膜中Fe3+占85%～92%,Fe2+占8%～15%。水稻天优998根表铁膜数量显著高于培杂泰丰,其铁吸收是培杂泰丰的115%～138%。两种铁形态处理明显提高水稻的根系活力,其中,FeCl2处理时水稻根系活力增加24%～69%,FeCl3为16%～54%。FeCl2处理时水稻根系SOD、POD和CAT活性分别增加11%～32%、15%～30%和30%～31%,但FeCl3处理没有明显影响。上述结果表明一定浓度铁处理明显增加水稻根表铁浓度和铁吸收;与FeCl3处理相比,FeCl2处理能提高根系抗氧化酶活性,增加水稻的铁吸收和根表铁膜数量。
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| 关 键 词： | 水稻 铁形态 根表铁膜 铁吸收 |
| 收稿时间： | 2010-10-09 |
Effect of different iron forms on iron plaque on root surface and iron uptake in rice seedlings |
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| FU You-qiang,LIANG Jian-ping,YU Zhi-wei,WU Dao-ming,CAI Kun-zheng,SHEN Hong.Effect of different iron forms on iron plaque on root surface and iron uptake in rice seedlings[J].Plant Nutrition and Fertilizer Science,2011,17(5):1050-1057. |
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| Authors: | FU You-qiang LIANG Jian-ping YU Zhi-wei WU Dao-ming CAI Kun-zheng SHEN Hong |
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| Institution: | FU You-qiang1,LIANG Jian-ping1,YU Zhi-wei1,WU Dao-ming1,CAI Kun-zheng2*,SHEN Hong1*(1 College of Resources and Environment,South China Agricultural University,Guangzhou 510642,China,2 College of Agronomy,China) |
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| Abstract: | Iron forms have great impacts on iron nutrition of rice seedlings,however,it remains unclear on how different iron forms influence iron uptake in rice seedlings.In this study,a hydroponic experiment was conducted to investigate the effects of FeCl2 and FeCl3 on iron uptake and iron plaque in rice seedlings.Results showed that the concentration of iron plaque on root surface under FeCl2 treatment was 197%-233% of that under FeCl3 treatment.Fe3+ and Fe2+ consisted of 85%-92% and 8%-15% of the total iron plaqu... |
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| Keywords: | rice iron forms iron plaque on root surface iron uptake |
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