| 锌胁迫对不同耐低磷玉米生长及磷、锌养分吸收的影响 |
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| 引用本文： | 章爱群,徐东生,崔雪梅,赵丽艳.锌胁迫对不同耐低磷玉米生长及磷、锌养分吸收的影响[J].华北农学报,2009,24(5). |
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| 作者姓名： | 章爱群 徐东生 崔雪梅 赵丽艳 |
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| 作者单位： | 孝感学院,生命科学技术学院,湖北,孝感,432100 |
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| 基金项目： | 湖北省教育厅科学技术研究项目 |
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| 摘 要： | 用营养液培养方法研究了不同耐低磷玉米幼苗对缺锌胁迫的适应性差异.结果表明,低磷敏感基因型在缺锌时植株各部位锌含量和吸收量显著下降,且变幅均明显高于耐低磷基因型.缺锌处理影响玉米幼苗的磷含量,低磷敏感基因型地上部磷含量较对照显著上升,根系磷含量变幅不大;耐低磷基因型地上部磷含量变幅较小,根系磷含量则显著下降.低磷敏感基因型在缺锌时地上部磷利用率显著下降,根系磷利用率无明显变化,而耐低磷基因型的变化情况正好相反,根系磷利用率受影响的程度大于地上部.
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| 关 键 词： | 玉米 耐低磷 基因型 锌 |
Effects of Zn-deficiency on Plant Growth and Uptake of P and Zn in Different P-Genotype Maize |
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| ZHANG Ai-qun,XU Dong-sheng,CUI Xue-mei,ZHAO Li-yan.Effects of Zn-deficiency on Plant Growth and Uptake of P and Zn in Different P-Genotype Maize[J].Acta Agriculturae Boreali-Sinica,2009,24(5). |
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| Authors: | ZHANG Ai-qun XU Dong-sheng CUI Xue-mei ZHAO Li-yan |
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| Abstract: | Three low-P tolerant maize genotypes M11.M08 and M02,and three low-P sensitive maize genotypes M06,M07 and M12 were applied to detect the effects of different zinc levels on their growth and uptake of P and Zn at seedling stage. The results demonstrated that Zn deficiency severely hindered the growing of maize. Zn deficiency had a negative influence on plant height, number of leaves and dry weight. Not only did treatment of Zn deficiency severely de-creased the absorbing of P and Zn, but Zn stress had greater effect on low-P sensitive genotypes than low-P tolerant geno-types for content of Zn at seedling stage. Under Zn deficiency condition, the content of P in shoot of sensitive genotypes were significant increased, but those in root were less effected; on the other hand, the content of P was significant de-creased in root of tolerant genotypes. There were differences of P utilization efficiency in response to Zn deficiency among different genotypes. P utilization efficiency in shoot of sensitive genotypes was decreased but those in root of tolerant geno-types were increased. |
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| Keywords: | Maize Low-P tolerant Genotype Zn |
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