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OA北大核心CSTPCD
Effects of Exogenous 6-BA on Protective Enzyme System of Salix hybrid Under Waterlogging Stress
以1年生杂交新美柳扦插苗为材料,采用盆栽模拟淹水加外源6-BA处理,测定不同时期植株生物量、叶片SP含量、MDA含量以及SOD活性和POD活性,分析其对淹水胁迫和外源6-BA的生理响应.结果表明:淹水胁迫下叶片SP含量呈下降趋势并降低了光合产物积累,抗氧化酶活性先升后降,MDA含量在45d时大幅增加;外源6-BA对胁迫下植株光合产物积累和保护酶系统具有显著影响.1年生杂交新美柳表现出较强耐涝性,前中期喷施30 mg/L浓度的6-BA对提高光合产物积累和增强叶片保护酶系统具有显著作用.
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.
任佳辉;高捍东;陈哲楠;李浩;刘强;陈澎军
南京林业大学林学院,国家林业和草原局南方林木种子检验中心,南方现代林业协同创新中心,江苏南京 210037江苏省有色金属华东地质勘查局地球化学调查与海洋地质调查研究院,江苏南京 210007
林学
杂交新美柳淹水胁迫6-BA保护酶系统冗余分析
Salix matsudana x albawaterlogging stress6-BAprotective enzyme systemredundancy ana-lysis
《西南林业大学学报》 2024 (003)
11-19 / 9
江苏省自然资源发展专项资金项目(JSZRHYKJ202108)资助.
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