多花黑麦草对铝胁迫的生长生理响应

吴亚; 陈思; 张卫红; 刘大林; 范吉标; 徐志鹏; 沈瑜

doi:10.11913/PSJ.2095-0837.2018.50755

多花黑麦草对铝胁迫的生长生理响应

扬州大学动物科学与技术学院, 江苏扬州 225000

基金项目:

现代农业（奶牛）产业技术体系建设专项资金资助（CARS-36）；江苏现代农业产业技术体系建设专项资金资助[JATS（2018）314]。

详细信息

作者简介:
吴亚(1994-),女,硕士研究生,研究方向为牧草资源开发与利用(E-mail:907320514@qq.com)。

通讯作者:
刘大林,E-mail:liudl@yzu.edu.cn

中图分类号: Q945.78
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出版历程
- 收稿日期: 2018-03-29
- 网络出版日期: 2022-10-31
- 发布日期: 2018-10-27

Growth and physiological responses of Lolium multiflorum to aluminum stress

College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu 225000, China

Funds:

This work was supported by grants from the Construction of Modern Agricultural (dairy) Industry Technology System (CARS-36) and Construction of Modern Agricultural Technology System in Jiangsu[JATS(2018)314].

摘要

摘要: 以多花黑麦草（Lolium multiflorum Lam.）为材料，采用盆栽实验法，对其进行不同浓度铝（Al）的胁迫处理（0、100、200、300、400、500 mg/kg），并测定植株胁迫后的各项生长和生理指标。结果显示，Al胁迫会抑制多花黑麦草的生长和生物量的积累，Al³⁺含量越高，其抑制作用越强。其中，土壤Al³⁺含量为500 mg/kg时对植物株高和地上部的干重产生显著抑制作用；而当Al³⁺含量为100 mg/kg时对植物根长和根干重产生显著抑制作用。叶绿素a、叶绿素b和叶绿素总量均随Al³⁺含量的升高而降低，其中Al³⁺含量为500 mg/kg时，叶绿素a、叶绿素b分别比对照下降了56.81%和46.57%。地上部和根系中的可溶性糖、游离脯氨酸、MDA含量和SOD活性均随Al³⁺含量的升高而升高，且上述地上部4个指标均高于根系。
- 多花黑麦草 /
- 铝胁迫 /
- 生长特性 /
- 生理指标
Abstract: We used a pot experiment to determine physiological and growth indicators of Lolium multiflorum Lam. under Al³⁺ stress (0, 100, 200, 300, 400, 500 mg/kg). Results showed that aluminum stress inhibited the growth and biomass accumulation of ryegrass, with higher Al³⁺ content resulting in stronger inhibition. When Al³⁺ content in the soil was 500 mg/kg, plant height and shoot dry weight were significantly inhibited; however, when Al³⁺ content was 100 mg/kg, root length and root dry weight were significantly inhibited. Furthermore, chlorophyll-a, chlorophyll-b, and total chlorophyll in the leaves decreased with the increase in Al³⁺ concentration. When Al³⁺ content was 500 mg/kg, chlorophyll-a and chlorophyll-b decreased by 56.81% and 46.57%, respectively. However, soluble sugar content, free proline content, MDA content, and SOD activity in the above-ground shoot and below-ground root systems increased with the increase in Al³⁺ concentration; however, these four indicators were higher in the shoot than root system.
- Lolium multiflorum /
- Aluminum stress /
- Growth characteristics /
- Physiological indexes

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