西北农业学报2025，Vol.34Issue(8)：1446-1454,9.DOI:10.7606/j.issn.1004-1389.2025.08.008
番茄叶片与根系对盐胁迫的生理响应
Physiological Response of Tomato Leaves and Roots To Salt Stress
摘要
Abstract
The study aimed to investigate the effects of brackish water on the physiological character-istics of tomato leaves and roots using the'Jiafen 200'variety as the subject.Treatments were set as follows:CK(NaCl 0 g/L),T1(NaCl 1 g/L),T2(NaCl 2 g/L),and T3(NaCl 3 g/L).Different shoot and root parameters of tomato plants were examined,including plant growth indicators(plant height,shoot diameter,and root system assessment);fluorescence parameters(fluorescence parame-ters(photochemical quenching coefficient(qP),maximum photochemical yield(Fv/Fm),and non-photochemical quenching coefficient(qN);photosynthetic parameters(transpiration rate(Tr),net photosynthetic rate(Pn),and intercellular carbon dioxide concentration(Ci);and root antioxidant en-zyme activity(superoxide dismutase(SOD),peroxidase(POD),and catalase(CAT).Treatment with brackish water inhibited plant height,chlorophyll content,and root length in tomatoes.The Tr value decreased;Pn and Ci initially decreased and then increased;qP and Fv/Fm values decreased;and qN increased under brackish water treatment.During the fruiting period,as the concentration of brackish water irrigation increased,the activities of SOD,POD,and CAT in the roots first increased and then decreased.The root SOD activity increased with higher concentrations of brackish water irri-gation,while POD and CAT activities showed a trend of initially increasing and then decreasing.There were significant correlations between root and leaf SOD activities at the seedling and flowering stages(P＜0.01).Significant correlations were also observed between root SOD activity and leaf CAT activity at the seedling,flowering,and fruiting stages(P＜0.05).Root POD activity showed signifi-cant orrelations with SOD activity at the flowering stage(P＜0.01),and with SOD activity at the seedling stage and CAT activity at the flowering stage(P＜0.05).Root CAT activity exhibited highly significant correlations with SOD activity at the seedling and flowering stages(P＜0.01).These re-sults suggest that antioxidant enzyme activities in tomato plants are activated in response to salt stress,with a clear relationship between the antioxidant activities in roots and leaves.关键词
番茄/微咸水/抗氧化酶/光合参数/钠盐胁迫Key words
Tomato/Brackish water/Antioxidant enzymes/Photosynthetic parameters/Sodium salt stress引用本文复制引用
张祎洋,朱彦哲,马思艳,马燕,王静,吴龙国..番茄叶片与根系对盐胁迫的生理响应[J].西北农业学报,2025,34(8):1446-1454,9.基金项目
宁夏高等学校自然科学项目(NYG-2024-019) （NYG-2024-019）
宁夏青年拔尖人才项目 （）
宁夏自然科学基金(2024AAC03120) （2024AAC03120）
国家重点研发计划项目子课题(2021YFD1600302-3). Natural Science Foundation for Ningxia Higher Education Institutions(No.NYG-2024-019) （2021YFD1600302-3）
Ningxia Young Top Talents Foundation （）
Ningxia Natural Science Foundation(No.2024AAC03120) （No.2024AAC03120）
National Key Research and Development Program(No.2021YFD 1600302-3). （No.2021YFD 1600302-3）
