MU Deyu,YANG Ning.Physiological Responses of Five Chrysanthemum morifolium Cultivars to Drought Stress[J].Northern Horticulture,2025,(19):45-50.[doi:10.11937/bfyy.20250765]
五个地被菊品系对干旱胁迫的生理响应
- Title:
- Physiological Responses of Five Chrysanthemum morifolium Cultivars to Drought Stress
- 文章编号:
- 1001-0009(2025)19-0045-06
- 分类号:
- S 682.11
- 文献标志码:
- A
- 摘要:
- 以5个地被菊品系扦插苗为试材，采用自然干旱处理的方法，分别测定各处理0、7、14 d的萎蔫指数以及生理指标，并对各指标进行相关性分析，研究在干旱胁迫下地被菊的生理响应过程，为地被菊的抗旱性研究以及抗旱种质的选育提供参考依据。结果表明：通过比较萎蔫指数发现，地被菊C-1、C-2、C-3抗旱能力更强，C-4、C-5抗旱能力较弱。结合干旱过程中其他生理指标以及相关性分析发现C-1、C-2、C-3的保护酶超氧化物歧化酶（SOD）以及过氧化物酶（POD）活性在干旱胁迫过程中起到了重要作用，保护酶活性的增强，有效降低干旱胁迫带来的伤害，维持细胞稳态，保护细胞膜透性，减少丙二醛的产生，维持叶绿素含量的稳定，使其能适应干旱胁迫，具有更强的抗旱能力。
- Abstract:
- Taking 5 Chrysanthemum morifolium strains or varieties cutting seedlings as test material，using natural drought treatment，measuring the treatment group 0，7，14 days wilt index and physiological index，and the correlation analysis of each index，explore the physiological response process of Chrysanthemum under drought stress，in order to provide reference for Chrysanthemum morifolium drought resistance research and the breeding of drought-resistant germplasm.The results showed that by comparing the wilting index，C-1，C-2 and C-3 were stronger，while C-4 and C-5 were weaker.Combined with other physiological indicators in the process of drought and correlation analysis found that C-1，C-2，C-3 protective enzyme SOD and POD activities played an important role in the process of drought stress，protect the enhancement of enzyme activity，effectively reduce the damage of drought stress，maintain the cell homeostasis，protect cell membrane permeability，reduce the production of malondialdehyde，maintain the stability of chlorophyll content，make it could adapt to drought stress，had stronger drought resistance.
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备注/Memo
慕德宇（1987-），男，博士，研究员，现主要从事园林植物、林木遗传与植物逆境生理等研究工作。E-mail：mudeyu@yeah.net.基金项目：山东省农业科技资金（林业科技创新）资助项目（2019LY005,2019LY009）。收稿日期：2025-03-05