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中国农学通报 ›› 2016, Vol. 32 ›› Issue (31): 46-50.doi: 10.11924/j.issn.1000-6850.casb16030048

所属专题: 生物技术 园艺

• 林学 园艺 园林 • 上一篇    下一篇

外源6-BA 和GA3对甜瓜叶片衰老过程中 生理特性及产量影响

赵卫星,王文英,李晓慧,徐小利,董彦琪,常高正,梁慎,康利允,高宁宁   

  1. 河南省农业科学院园艺研究所,新乡市农业科学院,河南省农业科学院园艺研究所,河南省农业科学院园艺研究所,新乡市农业科学院,河南省农业科学院园艺研究所,河南省农业科学院园艺研究所,河南省农业科学院园艺研究所,河南省农业科学院园艺研究所
  • 收稿日期:2016-03-05 修回日期:2016-10-11 接受日期:2016-04-28 出版日期:2016-11-10 发布日期:2016-11-10
  • 通讯作者: 赵卫星
  • 基金资助:
    国家西甜瓜产业技术体系建设项目“郑州综合试验站建设”(CARS-26);河南省农业科学院科研发展专项“甜瓜植株生理性早衰机理及调 控技术研究”(20157804)。

Effects of Exogenous 6-BA and GA3 on Physiological Characteristics During Leaf Senescence and Yield of Melon

  • Received:2016-03-05 Revised:2016-10-11 Accepted:2016-04-28 Online:2016-11-10 Published:2016-11-10

摘要: 为探明植物激素在调控甜瓜衰老中的作用机制,以早熟品种F35和中晚熟品种F28为试材,分别在苗期、伸蔓期喷施6-BA和GA3,研究了不同浓度植物激素对叶片叶绿素、可溶性蛋白和MDA含量、相关抗氧化酶活性等生理生化指标及产量的影响。结果表明:适宜浓度的6-BA和GA3均可提高甜瓜叶片叶绿素和蛋白质含量及SOD 酶活性,降低MDA含量,有效地延缓叶片衰老, 提高产量。其中,以6-BA 60 mg.L-1和GA3 80 mg.L-1处理效果明显优于其他处理。不同甜瓜品种对外源激素的敏感程度不同,总体来讲,早熟品种的敏感程度要高于中晚熟品种。

关键词: 植物激素, 植物激素, 生理作用, 分子机制, 测定技术

Abstract: The study aims to investigate action mechanism of plant hormone regulating melon senescence, and provide a theoretical basis for preventing premature senescence of melon. Early-maturing variety‘F35’and middle-late season variety‘F28’were used as the test materials, the effects of different concentrations of 6-BA and GA3 on physiological characteristics including chlorophyll, soluble protein and malondialdehyde (MDA) content, relative antioxidant enzyme activity during leaf senescence and yield were determined. The results showed that suitable concentrations of both 6-BA and GA3 could improve the chlorophyll content and SOD activity, and decrease MDA content, delay leaf aging and increase the yield of melon, and the effect of 6-BA 60 mg/L and GA3 80 mg/L were significantly better than that of the other treatments. The sensitive degrees of different cultivars to exogenous hormones were different, in general, the degrees of early-maturing cultivars were higher than those of middle-late season cultivars.

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