| 2个大豆基因型钾效率的比较研究 |
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| 引用本文： | 唐劲驰,曹敏建.2个大豆基因型钾效率的比较研究[J].华南农业大学学报,2005,26(1):7-10. |
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| 作者姓名： | 唐劲驰 曹敏建 |
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| 作者单位： | 华南农业大学,根系生物学中心,广东,广州,510642;沈阳农业大学,农学院,辽宁,沈阳,110161;沈阳农业大学,农学院,辽宁,沈阳,110161 |
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| 基金项目： | 国家973项目资助(G1999011700) |
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| 摘 要： | 将耐低钾基因型94065-2和不耐低钾基因型95137，以4个水平钾浓度的水培方法对其钾效率进行对照研究，结果表明：低钾条件下，94065-2在部分根系形态参数、根系活性及生物学产量方面均显著优于95137；从钾吸收效率(以吸钾量为标准)来看，两基因型问存在极显著差异，而钾利用效率方面差异则不显著，相对于不耐低钾基因型95137，耐低钾基因型94065-2对缺钾的抗性则主要表现在低钾条件下，有较强的钾吸收能力。
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| 关 键 词： | 大豆 低钾耐性 根系 钾效率 |
| 文章编号： | 1001-411X(2005)01-0007-04 |
Comparison of potassium efficiency of two soybean genotypes |
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| TANG Jin-chi.Comparison of potassium efficiency of two soybean genotypes[J].Journal of South China Agricultural University,2005,26(1):7-10. |
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| Authors: | TANG Jin-chi |
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| Institution: | TANG Jin-chi~ |
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| Abstract: | Potassium efficiency of soybean genotypes 94065-2 (tolerance of low potassium) and 95137 (sensitive to low potassium) was studied in solution culture with 4 different potassium concentrations. Some root morphological parameters, root activity and yield of 94065-2 were superior to those of 95137 under low K stress. There was significant difference in efficiency of potassium uptaken between the two soybean genotypes, but no remarkable difference in potassium utilization ratio. The high potassium efficiency of 94065-2 might be attributed to its stronger ability to absorb potassium. |
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| Keywords: | Glycine max tolerance of low potassium root K efficiency |
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