LI Zhenhua,LIU Rong,ZHANG Xinxin,et al.Effects of Exogenous Abscisic Acid on Enhancing Salt Tolerance of Festuca arundinacea[J].Northern Horticulture,2022,(07):66-75.[doi:10.11937/bfyy.20214081]
外源脱落酸增强高羊茅耐盐性的作用
- Title:
- Effects of Exogenous Abscisic Acid on Enhancing Salt Tolerance of Festuca arundinacea
- Keywords:
- Festuca arundinacea; salt stress; ABA; mitigation effect
- 文献标志码:
- A
- 摘要:
- 以高羊茅“火凤凰2号”为试材，采用水培法，研究叶面喷施外源ABA对高羊茅耐盐性的影响，以期为盐碱地上草坪建植提供参考依据。结果表明：在盐胁迫下，外源脱落酸能够促进高羊茅形态结构的建成，对叶片相对含水量和叶绿素含量也有提高作用，同时可维持细胞膜的稳定性，降低电解质渗透率。此外，在不同的盐胁迫条件下，喷施50 μmol?L-1 ABA溶液对于上述指标影响相对其它浓度更好。因此，喷施50 μmol?L-1 ABA是缓解NaCl胁迫效应、提高高羊茅耐盐性的一种有效方法。
- Abstract:
- Taking Festuca arundinacea ‘Phoenix Ⅱ 2’ as the test material,the effect of foliar spraying of exogenous ABA on the salt tolerance of tall fescue was studied by hydroponics,in order to provide reference for turfgrass planting on saline-alkali land.The results showed that under salt stress,exogenous abscisic acid could promote the formation of the morphological structure of Festuca arundinacea,increase the relative water content and chlorophyll content of leaves,maintain the stability of the cell membrane and reduce the electrolyte leakage.In addition,under different salt stress conditions,spraying 50 μmol?L-1 ABA solution had better effects on the above indicators than other concentrations.Therefore,spraying 50 μmol?L-1 ABA was an effective method to alleviate the effect of NaCl stress and improve the salt tolerance of Festuca arundinacea.
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备注/Memo
第一作者简介：李振华（1996-），男，硕士研究生，研究方向为草坪学。E-mail：lizhh20@lzu.edu.cn.责任作者：柴琦（1971-），男，博士，教授，现主要从事草坪学等研究工作。E-mail：chaiqi@lzu.edu.cn.基金项目：南通市应用基础研究资助项目（MS12017019-2）。收稿日期：2021-10-06