| 低温对缺钼冬小麦幼苗生长的影响 II.对氮代谢的影响 |
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| 引用本文： | 李文学,王震宇,张福锁,韩晓日.低温对缺钼冬小麦幼苗生长的影响 II.对氮代谢的影响[J].植物营养与肥料学报,2001,7(1):88-92. |
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| 作者姓名： | 李文学 王震宇 张福锁 韩晓日 |
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| 作者单位： | 1.中国农业大学植物营养系 北京100094; |
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| 基金项目： | 国家重点基础研究专项经费资助（G1999011707）。 |
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| 摘 要： | 对三叶一心的缺钼冬小麦进行 24h低温处理 (-5～0℃) ,了解其对氮代谢诸方面的影响。结果显示 ,缺钼对植株全氮含量基本无影响 ,但能明显影响氮在植株各部位的分配。常温下 ,供钼显著降低植株地上部全氮含量 ,但根部全氮量明显增加 ;低温条件下 ,供钼与不施钼处理的冬小麦根部全氮量无大差别 ;无论温度如何 ,施钼与否 ,各处理地上部、根中可溶性蛋白含量均无显著差别。常温下 ,施钼显著提高地上部游离氨基酸含量 ,低温处理后 ,施钼和缺钼处理的植株地上部游离氨基酸含量均明显提高 ,且施钼处理显著高于缺钼处理。通过对硝酸还原酶活性的测定证实 ,常温下 ,钼对冬小麦体内硝酸还原酶活性无影响 ;在低温条件下 ,缺钼植株地上部、根中硝酸还原酶活性明显低于施钼植株 ,施钼植株硝酸还原酶活性能保持在较高水平。
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| 关 键 词： | 冬小麦 缺钼 低温 氮代谢 |
| 文章编号： | 1008-505X（2001）01-0088-05 |
| 修稿时间： | 1999年8月25日 |
Effect of molybdenum on
growth of winter wheat seedlings induced by low temperature
II. Effect on nitrogen metabolism |
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| LI Wwn xue,WANG Zhen yu,ZHANG Fu suo,HAN Xiao ri.Effect of molybdenum on
growth of winter wheat seedlings induced by low temperature
II. Effect on nitrogen metabolism[J].Plant Nutrition and Fertilizer Science,2001,7(1):88-92. |
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| Authors: | LI Wwn xue WANG Zhen yu ZHANG Fu suo HAN Xiao ri |
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| Institution: | 1.Dept of plant nutrition;CAU;Beijing 100094;China; |
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| Abstract: | Low temperature ( LT,-5～0℃) has been underway for 24h when winterwheat seedlings are 28 days old. The results as followed : Mo deficiency has no obvious effects on N content of whole plant but affects distributi on of it significantly. Under normal temperature (NT) conditions, N content in shoot of Mo applied decreases significantly, while that in root increases obviously,and N content in root has no distinct difference between Mo deficiency and Mo application under LT condition. Soluble protein contents in shoot and root have no relation with Mo and LT. Under NT conditions, free amino acid content of shoot is enhanced obviously by Mo；after induced by LT, that of both shoot and root increase significantly, especially shoot. Nitrate reductase activity of Mo applied keeps at a relative high level under LT conditions. |
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| Keywords: | winter wheat Mo deficient low temperature nitrogen metabolism NR |
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