山东农业大学学报（自然科学版）2025，Vol.56Issue(1)：160-166,7.DOI:10.3969/j.issn.1000-2324.2025.01.018
氯胆·萘乙酸缓解生姜幼苗淹水胁迫的生理机制
Physiological Mechanism of Choline Chloride Naphthyl Acetic Acid Alleviating Waterlogging Stress in Ginger Seedlings
摘要
Abstract
Since ginger has an underdeveloped root system and weak stress tolerance,an flooding disaster can easily lead to the rotten root,weakened growth and significantly reduced yield.In order to find the methods to alleviate the flooding stress,this experiment investigated the effects of different waterlogging time on ginger growth,and explored the mitigation effect of foliar spraying with different concentrations of chlorocholine-naphthalene acetic acid(CC·NAA)on the alleviation of waterlogging stress.The results showed that with the extension of waterlogging time,the vitality of root system decreased significantly,and the stress could lead to root browning in 2 d and plant death in more than 3 d.With the increase of CC·NAA foliar spraying concentration,With the increase of CC·NAA foliar spraying concentration,the root activity of ginger plants subjected to 2 days of waterlogging showed a trend of first increasing and then decreasing.After 5 days of treatment,the root activity of the 0.10g·L-1 CC·NAA treatment was significantly increased by 65.15%compared to the control(CK).CC·NAA significantly increased the content of chlorophyll in ginger leaves under waterlogging stress,reduced stomatal and non-stomatal limitation,and promoted water-air exchange capacity.The net photosynthetic rate and stomatal conductance of 0.10 g·L-1 CC·NAA treatment were increased by 9.61-fold and 1.54-fold compared to the control(CK),respectively.Additionally,Fv/Fm and ΦPSII were elevated by 69.05%and 57.14%,respectively.In addition,CC-NAA significantly increased the content of soluble protein and proline in leaves and roots,enhanced the activity of antioxidant enzymes,reduced the accumulation of reactive oxygen species,and attenuated the degree of membrane peroxidation.关键词
生姜/淹水胁迫/氯胆·萘乙酸/水汽交换参数/抗氧化系统Key words
Ginger/flooding stress/chlorocholine naphthalene acetic acid/water-air exchange parameters/antioxidant system分类
农业科技引用本文复制引用
孙秉鑫,刘璇,王迪,吕尧,徐坤..氯胆·萘乙酸缓解生姜幼苗淹水胁迫的生理机制[J].山东农业大学学报（自然科学版）,2025,56(1):160-166,7.基金项目
山东省自然科学基金(ZR2022QC009) （ZR2022QC009）
国家自然科学基金(32302530) （32302530）
