LI Guang-yuan,WANG Feng-hua,JIANG Yan,et al.Effect of Foliage Spraying Fe2+ on Morphological and Physiological Index of Lettuce[J].Northern Horticulture,2014,38(24):31-34.
叶面喷施Fe2+对生菜形态和生理指标的影响
- Title:
- Effect of Foliage Spraying Fe2+ on Morphological and Physiological Index of Lettuce
- 文章编号:
- 1001-0009(2014)24-0031-04
- Keywords:
- lettuce; Fe2+treatment; chlorophyll; foliage spraying
- 分类号:
- S 636.2
- 文献标志码:
- B
- 摘要:
- 以生菜品种“大速生”为试材，采用基质栽培研究方法，研究了叶面喷施不同浓度的Fe2+对生菜幼苗形态和生理指标的影响。结果表明：喷施低于60 mg/L的Fe2+处理对生菜的株高无明显影响，但浓度为60 mg/L Fe2+时，就会抑制植株长高；Fe2+浓度低于45 mg/L时，生菜具有较多的叶片数，浓度为60 mg/L则起抑制作用；Fe2+处理对生菜的叶绿素a含量和叶绿素总含量的影响不明显，但是15 mg/L Fe2+处理对生菜叶绿素b含量有促进作用，在此处理下的叶绿素b含量显著高于其它各处理，约为对照的164%；60 mg/L Fe2+处理显著提高了生菜叶片的可溶性蛋白质含量；虽然叶面喷施Fe2+对叶片可溶性糖含量没有显著的影响，但显著降低了叶片脯氨酸含量和过氧化物酶的活性，且浓度越高，抑制作用越明显。
- Abstract:
- Taking ‘Dasusheng’ lettuce as test materials,the effects of spraying Fe2+?on lettuce seedlings were studied using matrix cultivation.The results showed that it had no effect on plant height when the concentration was lower than 60 mg/L,and it inhibited the growth as the concentration was up to 60 mg/L.Lettuce had more leaves when the concentration was lower than 45 mg/L,and it showed restriction effect under 60 mg/L.Fe2+had no significant influences on contents of chlorophyll a and total chlorophyll,but it increased the chlorophyll b content when the Fe2+concentration was 15 mg/L.The chlorophyll b content under the treatment of 15 mg/L Fe2+was about 164% of the control.The soluble protein content was the highest when praying with 60 mg/L Fe2+Fe2+did not influence the content of soluble sugar,however it decreased the content of proline (Pro) and the activity of peroxidase (POD),the higher concentration,the lower Pro content and POD activity,respectively.
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备注/Memo
第一作者简介：李光远（1971-），男，安徽灵壁人，实验师，研究方向为蔬菜生物学。E-mail：guangyuan.li@163.com.