Study on the Effects of Four Exogenous Plant Growth Regulators on the Alleviation of Salt and Waterlogging Stress on Reed Canarygrass

doi:10.11733/j.issn.1007-0435.2026.09.011

Acta Agrestia Sinica ›› 2026, Vol. 34 ›› Issue (9): 3260-3275.DOI: 10.11733/j.issn.1007-0435.2026.09.011

Study on the Effects of Four Exogenous Plant Growth Regulators on the Alleviation of Salt and Waterlogging Stress on Reed Canarygrass

WANG Zhao-ting^1,2, ZHAO Xiao-yan³, DAO Yi-xin¹, LIU Bo-yang¹, MOU Hai-peng¹, ZHAO Jun-ming¹, JI Xiao-fei², LI Da-xu², YAN Li-jun², LI Zi-qian², ZHOU Jing-wen⁴, MA Xiao¹, ZHANG Jian-bo²

1. Sichuan Agricultural University, Chengdu, Sichuan Province 610000, China;
2. Sichuan Academy of Grassland Sciences, Chengdu,Sichuan Province 611731, China;
3. Aba Prefecture Forestry and Grassland Bureau, Maerkang, Sichuan Province 624000, China;
4. Butuo County Forestry and Grassland Bureau, Butuo, Sichuan Province 616300, China

Received:2025-12-24 Revised:2026-03-26 Published:2026-09-11

四种外源植物生长调节剂对虉草盐涝胁迫的缓解作用研究

王昭婷^1,2, 赵晓燕³, 刀懿心¹, 刘柏杨¹, 牟海鹏¹, 赵俊茗¹, 季晓菲², 李达旭², 闫利军², 李子谦², 周靖文⁴, 马啸¹, 张建波²

1. 四川农业大学, 四川成都 610000;
2. 四川省草原科学研究院, 四川成都 611731;
3. 阿坝州林业和草原局, 四川马尔康 624000;
4. 布拖县林业和草原局, 四川布拖 616300

通讯作者: 马啸, E-mail: maroar@126.com;张建波, E-mail: 303206208@qq.com
作者简介:王昭婷(2001-),女,汉族,河北保定人,硕士研究生,主要从事饲草种质创新与育种研究,E-mail:3335776538@qq.com
基金资助:
四川饲草创新团队建设项目（SCCXTD-2026-16）；农业农村部作物种质资源阿坝野外科学观测研究站（MARA-ORS178-GR104）；四川省基本科研业务费（2025JDKY0033-1）；国家牧草产业技术体系阿坝综合试验站（CARS-34）；农作物及畜禽育种攻关计划项目（2026YFYZ0004）；国家重点研发计划项目（2024YFD1301200）；四川省肉牛创新团队建设项目（SCCXTD-2026-13）资助

Abstract

Abstract: In order to explore the alleviation effect of exogenous plant growth regulators （ PGRs ） on the growth of reed canarygrass （Phalaris arundinacea L.）under salt， waterlogging and salt-waterlogging combined stress， reed canarygrass at tillering stage was used as material， and different concentrations of ethephon （ETH）， indole-3-acetic acid （IAA）， spermidine （Spd） and γ-aminobutyric acid （GABA） were applied under three stresses， and the related physiological indexes were determined. The results showed that all three stresses significantly inhibited the growth of reed canarygrass， and the application of PGRs could effectively alleviate the stress damage. Among them， the application of 80 mg·L^-1 ETH under salt stress had the best mitigation effect， the Pro content was significantly increased by 20.36% and the MDA content was decreased by 34.52% compared with the stress group. Under flooding stress， 60 mg·L^-1 ETH was the best， and the activities of SOD and CAT were significantly increased by 105.83% and 40.07%， respectively. Under combined stress， 10 mmol·L^-1 GABA had the best effect， chlorophyll content increased by 30.30%， MDA decreased by 43.75%， and CAT increased by 23.31%（P<0.05）. In summary， the application of PGRs can alleviate stress damage by enhancing osmotic adjustment and antioxidant capacity and reducing membrane lipid peroxidation， and the type and concentration of optimal regulators vary depending on the type of stress.

Key words: Plant growth regulators （PGRs）, Phalaris arundinacea L., Salt stress, Waterlogging stress, Salt-waterlogging combined stress

摘要： 为探究外源植物生长调节剂（PGRs）对盐、涝及盐涝复合胁迫下虉草生长的缓解效应，以分蘖期‘川西’虉草品种（Phalaris arundinacea L.）为材料，在3种胁迫下分别施加不同浓度的乙烯利（ETH）、吲哚乙酸（IAA）、亚精胺（Spd）和γ-氨基丁酸（GABA），测定其相关生理指标。结果表明：3种胁迫均显著抑制虉草生长，施加PGRs可有效缓解胁迫伤害。其中，盐胁迫下施加80 mg·L^-1 ETH缓解效果最优，Pro含量较胁迫组显著增加20.36%，MDA含量下降34.52%；水淹胁迫下60 mg·L^-1 ETH最优，SOD和CAT活性分别显著提高105.83%和40.07%；复合胁迫下10 mg·L^-1 GABA效果最佳，叶绿素含量增加30.30%，MDA下降43.75%，CAT提高23.31%（P<0.05）。综上，施加PGRs可通过增强渗透调节与抗氧化能力、减轻膜脂过氧化来缓解胁迫损伤，且最优调节剂种类及浓度因胁迫类型而异。

关键词: 植物生长调节剂（PGRs）, 虉草, 盐胁迫, 水淹胁迫, 盐涝复合胁迫

CLC Number:

S813.2

WANG Zhao-ting, ZHAO Xiao-yan, DAO Yi-xin, LIU Bo-yang, MOU Hai-peng, ZHAO Jun-ming, JI Xiao-fei, LI Da-xu, YAN Li-jun, LI Zi-qian, ZHOU Jing-wen, MA Xiao, ZHANG Jian-bo. Study on the Effects of Four Exogenous Plant Growth Regulators on the Alleviation of Salt and Waterlogging Stress on Reed Canarygrass[J]. Acta Agrestia Sinica, 2026, 34(9): 3260-3275.

王昭婷, 赵晓燕, 刀懿心, 刘柏杨, 牟海鹏, 赵俊茗, 季晓菲, 李达旭, 闫利军, 李子谦, 周靖文, 马啸, 张建波. 四种外源植物生长调节剂对虉草盐涝胁迫的缓解作用研究[J]. 草地学报, 2026, 34(9): 3260-3275.

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Study on the Effects of Four Exogenous Plant Growth Regulators on the Alleviation of Salt and Waterlogging Stress on Reed Canarygrass

四种外源植物生长调节剂对虉草盐涝胁迫的缓解作用研究

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