| HCO3^—对不同水稻品种Zn吸收运输的影响 |
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| 引用本文： | 徐晓燕,杨肖娥,杨玉爱.HCO3^—对不同水稻品种Zn吸收运输的影响[J].应用与环境生物学报,2001,7(6):532-535. |
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| 作者姓名： | 徐晓燕 杨肖娥 杨玉爱 |
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| 作者单位： | 1. 中国科技大学经济技术学院,
2. 浙江大学华家池校区土化系, |
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| 基金项目： | 国家自然科学基金(No:39570416)和安徽省自然基金资助项目 |
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| 摘 要： | 应用营养液培养的方法，研究了不同Zn浓度下，HCO3^-对缺Zn敏感和耐性水稻品种生长及Zn吸收运输的影响。结果表明，在低Zn浓度下，HCO3^-明显抑制敏感品种根的生长，但对耐性品种根生长有轻微的促进作用；HCO3^-降低缺Zn敏感品种对Zn的吸收及Zn从根向地上部的运输，而对耐性品种影响较小，HCO3^-抑制缺Zn敏感品种生长并诱导缺Zn的最初作用可能是抑制根的生长，进而影响Zn的吸收和运输。
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| 关 键 词： | 重碳酸氢根 缺Zn敏感品种 耐低Zn品种 水稻生长 Zn吸收运输 缺锌 |
| 修稿时间： | 2001年4月8日 |
EFFECTS OF HCO-3 ON ABSORPTION AND TRANSPORTATION OF Zn FOR DIFFERENT RICE CULTIVARS |
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| Abstract: | Effects of HCO - 3 on the growth and Zn absorption and transportation of different rice cultivars, the Zn-inefficient cultivar (IR26) and the Zn-efficient cultivar (IR8192-31-2), were investigated by solution culture. Application of HCO - 3strongly inhibited root growth of Zn-inefficient cultivar, especially at low Zn concentration, while root growth of the Zn-efficienct cultivar was slightly stimulated by HCO - 3. HCO - 3 inhibited both Zn absorption and transportation from roots to shoots for the Zn-inefficient cultivar .These results demonstrated that the inhibition of root growth by HCO - 3 was likely to be the initial step and then Zn deficiency was induced in lowland rice. Fig 1, Tab 3, Ref 9 |
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| Keywords: | HCO - 3 Zn-inefficient rice cultivar Zn-efficient rice cultivar rice growth Zn absorption and transportation |
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