| 龚玉莲龙燮强陈壖刘金桃黄汉凤刘琴.蕹菜典型品种中Cd、Pb、Cr、Ni 等重金属含量及其相关性[J].现代生物医学进展英文版,2012,12(12):2235-2238. |
| 蕹菜典型品种中Cd、Pb、Cr、Ni 等重金属含量及其相关性 |
| Interaction of Cd, Pb, Cr and Ni for Uptake and Accumulation in WaterSpinach Typical Cultivars with Different Cd Accumulation Abilities |
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| DOI： |
| 中文关键词: 蕹菜（Ipomoea aquatica Forsk.）镉积累典型品种 重金属 相关性 |
| 英文关键词: Water spinach （Ipomoea aquatica Forsk.）typical cultivars with different Cd accumulation abilities Heavy metals Interaction |
| 基金项目:国家自然科学基金面上项目( 20877104 ) |
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| 中文摘要: |
| 目的：蕹菜（Ipomoea aquatica Forsk.）Cd（镉）积累典型品种对Cd、Pb（铅）、Cr（铬）、Ni（镍）等多种重金属的吸收积累及相互关
系。方法：采用盆栽试验，分析4 个蕹菜Cd 积累典型品种在6 种土壤上的两茬茎叶及根Cd、Pb、Cr、Ni 含量及相关性。结果：①品
种和土壤对供试蕹菜典型品种Cd 含量的效应均达显著水平（P < 0.05），对Pb、Cr 和Ni 含量的效应因重金属、收获时期及部位而
不同，二者对Cd、Pb 含量具一定的交互效应。②两茬茎叶Cd 含量平均值均为T308 > GDB > QLB > QLQ，根Cd 平均含量高于茎
叶Cd 平均含量；除Cr 外，根Pb 和Ni 平均含量均高于茎叶。③Cd、Pb、Cr、Ni 含量呈现复杂的相关关系。茎叶Cd 含量与Pb 含量
正相关，且第一茬相关性极显著（P < 0.01）；Pb 含量与Ni 含量相关关系明显，第一茬茎叶、根Pb 含量与Ni 含量的正相关达到显
著（P< 0.05）或极显著水平（P < 0.01），但第二茬茎叶Pb 含量与Ni 含量却显著负相关（P < 0.05）；Pb 含量与Cr 含量的相关性仅第
一茬茎叶显著（P < 0.05）；Cr 含量与Ni 含量的相关性仅第二茬茎叶达极显著水平（P < 0.01）。结论：蕹菜典型品种对Cd、Pb、Cr、
Ni 的吸收积累存在协同和拮抗两种作用。 |
| 英文摘要: |
| Objective: To investigate the interaction of Cd, Pb, Cr and Ni for uptake and accumulation in water spinach（Ipomoea
aquatica Forsk.）typical cultivars with different Cd accumulation abilities. Methods: A pot experiment was conducted to study the concentrations
of Cd, Pb, Cr and Ni in shoots and roots of four water spinach typical cultivars under six soils, and the correlative interaction of
Cd, Pb, Cr and Ni concentrations. Results: ① The effects of cultivar and soil on Cd concentrations in the tested cultivars were always
significant (P < 0.05), and those on Pb, Cr and Ni concentrations were different among heavy metals, harvests and organs. The interaction
of cultivar and soil affected Cd and Pb concentrations significantly (P < 0.05). ② Average shoot Cd concentrations in first and second
harvests were T308 > GDB > QLB > QLQ. Average Cd concentrations in root were higher than those in shoot. Expect Cr, average Pb
and Ni concentrations in root were higher than those in shoot. ③ Complicated interaction were observed among Cd, Pb, Cr and Ni
concentrations. Cd concentrations were significantly and positively correlated with Pb concentrations in shoot of the first harvest (P <
0.01). Pb concentrations were significantly and positively correlated with Ni concentrations in root and shoot of the first harvest (P <
0.05), but significantly and negatively correlated in shoot of the second harvest (P < 0.05). Pb concentrations were significantly and
positively correlated with Cr concentrations in shoot of the first harvest (P < 0.05). Cr concentrations were significantly and positively
correlated with Ni concentrations in shoot of the second harvest (P < 0.01). Conclusion: The interaction of Cd, Pb, Cr and Ni for uptake
and accumulation in water spinach typical cultivars included antagonism and synergism. |
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