中国蔬菜Issue(6)：110-120,11.DOI:10.19928/j.cnki.1000-6346.2025.3017
番茄砧木苗期对淹水胁迫响应及耐涝性评价
Responses of Waterlogging Stress and Evaluation of Waterlogging Tolerance in Tomato Rootstocks at Seedling Stag
摘要
Abstract
To investigate the responses and flood tolerance of tomato rootstocks at the seedling stage under waterlogging stress,five rootstock cultivars—'Lizhen No.2''Qinhezhenmu''Yongshi No.1''Weiershengen' and 'Jinzuan'—were evaluated.Seedlings were subjected to waterlogging treatments of varying durations(0,2,4,8,and 16 days),along with a control(CK,normal water conditions).Physiological indicators,including malondialdehyde(MDA),superoxide anion(O2-·),antioxidant enzyme activities,proline(Pro)content,and root activity,as well as growth traits such as plant height and dry biomass,were measured.Results showed that 'Qinhezhenmu' exhibited strong flood tolerance,'Weiershengen' was sensitive,while the other three had intermediate tolerance.With prolonged waterlogging,MDA levels generally increased.O2-·levels in 'Qinhezhenmu' and 'Yongshi No.1'decreased in later stages.Most rootstocks showed a continuous increase in antioxidant enzyme activity and Pro accumulation.'Qinhezhenmu' and 'Jinzuan' maintained high root activity,consistently exceeding that of the control.Waterlogging significantly reduced plant height and dry biomass in all rootstocks,while the root-to-shoot ratio increased.Principal component analysis ranked flood tolerance as follows:'Qinhezhenmu'＞'Jinzuan'＞'Yongshi No.1'＞'Lizhen No.2'＞'Weiershengen',consistent with the seedling-stage evaluation.关键词
番茄砧木/淹水胁迫/生理生化/主成分分析Key words
tomato rootstock/waterlogging stress/physiology and biochemistry/principal component analysis引用本文复制引用
余扣花,王红梅,刘凤琼,贺申魁,唐娜,蒋雅琴..番茄砧木苗期对淹水胁迫响应及耐涝性评价[J].中国蔬菜,2025,(6):110-120,11.基金项目
广西特色作物研究院科研基金项目(2023B001),广西农业科技自筹经费资助项目(Z2024045,Z2024046),桂林市科学研究与技术开发计划项目(20220135-4),广西科技计划项目(桂农科AB241484049),广西农业科学院基本科研业务专项(桂农科2021JM21) （2023B001）
