西南林业大学学报2024，Vol.44Issue(3)：11-19,9.DOI:10.11929/j.swfu.202211039
外源6-BA对淹水胁迫下杂交新美柳叶片保护酶系统的影响
Effects of Exogenous 6-BA on Protective Enzyme System of Salix hybrid Under Waterlogging Stress
摘要
Abstract
The biomass,leaf SP content,MDA content,SOD activity,and POD activity of plants at different stages were measured to analyze their physiological responses to flooding stress and exogenous 6-BA by simulat-ing flooding with exogenous 6-BA treatment in pots using annual Salix matsudana × alba cuttings as the material.The findings indicated that the SP content of leaves under flooding stress showed a decreasing trend and reduced photosynthetic product accumulation,the antioxidant enzyme activity increased and then decreased,and the MDA content increased significantly at 45 d.Exogenous 6-BA had a significant effect on photosynthetic product accu-mulation and protective enzyme system of plants under stress.The study showed that the annual Salix hybrid showed strong tolerance to flooding,and the spraying of 6-BA at a concentration of 30 mg/L in the first and middle stages had a significant effect on improving photosynthetic product accumulation and enhancing the leaf protective enzyme system.关键词
杂交新美柳/淹水胁迫/6-BA/保护酶系统/冗余分析Key words
Salix matsudana x alba/waterlogging stress/6-BA/protective enzyme system/redundancy ana-lysis分类
农业科技引用本文复制引用
任佳辉,高捍东,陈哲楠,李浩,刘强,陈澎军..外源6-BA对淹水胁迫下杂交新美柳叶片保护酶系统的影响[J].西南林业大学学报,2024,44(3):11-19,9.基金项目
江苏省自然资源发展专项资金项目(JSZRHYKJ202108)资助. （JSZRHYKJ202108）
