Journal of Henan Agricultural Sciences ›› 2026, Vol. 55 ›› Issue (1): 132-138.DOI: 10.15933/j.cnki.1004-3268.2026.01.012

• Horticulture • Previous Articles     Next Articles

Effects of Exogenous 6‐BA and GA3 on Ethylene Release Amount,Polyamine Content and Membrance Lipid Peroxidation of Melon Leaves

ZHAO Weixing,LI Xiaohui,GAO Ningning,KANG Liyun,CHANG Gaozheng,LI Hailun,WANG Huiying   

  1. (Institute of Horticulture,Henan Academy of Agricultural Sciences,Zhengzhou 450002,China)
  • Received:2025-04-28 Accepted:2025-06-17 Published:2026-01-15 Online:2026-01-30

外源6-BA 和GA3 对甜瓜叶片乙烯释放量、多胺含量及膜脂过氧化的影响

赵卫星,李晓慧,高宁宁,康利允,常高正,李海伦,王慧颖   

  1. (河南省农业科学院 园艺研究所,河南 郑州 450002)
  • 作者简介:赵卫星,研究员,博士,主要从事西瓜甜瓜育种及栽培生理研究。E-mail:wxzhao2008@163.com
  • 基金资助:
    国家西甜瓜产业技术体系建设项目(CARS-25);河南省西甜瓜产业技术体系建设项目(HARS-22-10-G1);河南省科技攻关项目(252102110307);河南省农业良种攻关项目(2022010503);河南省农业科学院自主创新项目(2026ZC044)

Abstract: The aims are to clarify the physiological mechanism of 6‐BA and GA3 regulating melon leaf senescence and to provide a theoretical basis for their application in delaying leaf senescence.Early‐maturing thick‐skinned variety‘Xuetong No.9’was used as the test materials,which were sprayed on the leaves by 30 mg/kg 6‐BA and 20 mg/kg GA3 at flowering and fruit setting stage under protected cultivation conditions,with water as the control.The changes in relative chlorophyll content(SPAD value),ethylene release amount,polyamine content,catalase(CAT)activity,malondialdehyde(MDA)content,hydrogen peroxide(HO)content of leaves,and yield were investigated. The results showed that the SPAD values were increased by 1.78%—8.04% and 0.37%—6.08%,while ethylene release amount was reduced by 5.12%—28.46% and 2.34%—18.80% respectively with exogenous 6‐BA and GAtreatments,and the contents of MDA,H2O2 and putrescine rescine in leaves were also decreased,while the contents of spermine,spermidine and CAT activity were increased,and the yields were also increased by 6.70% and 4.75% respectively.Overall,both exogenous hormone treatments showed more pronounced effects in the early stage,with their efficacy gradually diminishing over time.These findings indicate that 6‐BA and GA can enhance leaf anti‐aging capacity and delay senescence by regulating ethylene release,polyamine metabolism,and membrane lipid peroxidation.

Key words: Melon, 6‐BA, GA3, Ethylene release, Polyamine, Membrance lipid peroxidation

摘要: 为明确6-苄基腺嘌呤(6-BA)和赤霉素(GA3)调控甜瓜叶片衰老的生理机制并为其在延缓叶片衰老中的应用提供理论依据,以早熟厚皮甜瓜雪彤9号为试材,在设施栽培条件下于开花坐果期分别叶面喷施30 mg/kg 6-BA和20 mg/kg GA3,以清水为对照,探讨叶片叶绿素相对含量(SPAD值)、乙烯释放量、多胺含量及过氧化氢酶(CAT)活性、丙二醛(MDA)含量、过氧化氢(H2O2)含量和产量的变化。结果表明,外源6-BA和GA3处理后7~42 d,使甜瓜叶片SPAD值较对照提高1.78%~8.04%和0.37%~6.08%,乙烯释放量较对照降低5.12%~28.46%和2.34%~18.80%,同时叶片MDA、H2O2、腐胺(Put)含量也均有不同程度的降低,精胺(Spm)、亚精胺(Spd)含量和CAT活性有所升高,产量分别提高6.70%、4.75%;从整体上来看,2种外源激素处理前期效果较为明显,随时间的推移其作用效果逐渐减弱。综上所述,6-BA和GA3可通过调控甜瓜叶片乙烯释放量、多胺含量和膜脂过氧化程度,提高叶片的抗衰老能力,延缓叶片衰老。

关键词: 甜瓜, 6-BA, GA3, 乙烯释放量, 多胺, 膜脂过氧化

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