| 摘要: |
| 本文用营养液培养方法研究了铁对玉米体内氮代谢的影响。结果表明，铁对玉米体内氮代谢有较大的影响。在尚未对植株生物量产生明显影响的条件下，供铁已显著提高了玉米新叶中全铁和全氮含量，并显著提高了玉米新叶的叶绿素含量。进一步的研究结果表明，缺铁抑制了蛋白质的合成，缺铁条件下，玉米新叶中蛋白质含量下降，而游离氨基酸大量累积，并导致了硝酸还原酶的活性下降。 |
| 关键词: 铁供应,氮代谢,玉米 |
| DOI： |
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| 基金项目:国家攀登计划资助，自然科学基金 |
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| Effect of Iron Supply on Nitrogen Metabolism of Corn |
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| Abstract: |
| The effect of iron on nitrogen metabolism was observed with corn plants (Huang 417) growing in nutrient solution under the controlled condition. The results showed that Fe supply had mainly effect on nitrogen metabolism of corn plants, which improved total Fe, total N and chlorophyll content in young leaves other than old leaves, and at this time, even no apparent influence on the biomass of plants. Further study indicated that Fe deficiency inhabited the protein synthesis in young leaves of corn plants, and then,led to the decrease of protein content, NRase activity and more accumulation of aminoacid. |
| Key words: iron supply,nitrogen metabolism,corn |
