| 籼稻不同基因型钾素吸收利用效率的调控 |
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| 引用本文： | 刘国栋,刘更另.籼稻不同基因型钾素吸收利用效率的调控[J].植物营养与肥料学报,1995,1(2):47-53. |
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| 作者姓名： | 刘国栋 刘更另 |
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| 作者单位： | 1.中国科学院遗传研究所 100101;中国农业科学院 100081 |
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| 摘 要： | 本试验研究了三叶期稻株不同钾素营养状态,IAA(indole-3-acetic.acid),REM(metal.mixture.including.rare.earth)和NaVO3对水稻基因型吸钾速率的调控作用。以1mol/L.K+处理15分钟后,NaVO3则极显著地抑制水稻对钾的吸收。REM和NaVO3的作用可以相互抵消。REM还可极显著地提高水稻的生物产量和钾素利用效率。说明水稻对钾的吸收可进行正向或反向调控。
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| 关 键 词： | 吸钾速率 钾素利用效率 吸钾速率的调控 |
REGULATION OF POTASSIUM INFLUX RATES AND UTILIZATION EFFICIENCY IN ORYZA INDICA GENOTYPES |
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| Liu Guodong,Liu Gengling.REGULATION OF POTASSIUM INFLUX RATES AND UTILIZATION EFFICIENCY IN ORYZA INDICA GENOTYPES[J].Plant Nutrition and Fertilizer Science,1995,1(2):47-53. |
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| Authors: | Liu Guodong Liu Gengling |
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| Institution: | 1.Institute of Genetics. CAS. 100101; Chinese Academy of Agricutural Sciences. 100081 |
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| Abstract: | Potassium(K) influx rates of 4 O. indica genotyes were regulated by cell potassium status, IAA, REM and NaVO3 at 3-Leaf stage. The K influx rate was markedly promoted by both IAA and REM (metal mixture including rare earth). However it was significantly decreased when treated preliminarly with 1 mmol L-1 K+ for 15min. Similarly, NaVO3 inhibited the K influx rate significantly or extremely significantly as well. The effects of REM and NaVO3 were counteractive. REM also increaesd biomass and K utilization efficiency. It indicated that K influx of rice could be regulated in two directions. |
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