北方农业学报 ›› 2020, Vol. 48 ›› Issue (2): 96-101.doi: 10.12190/j.issn.2096-1197.2020.02.15

• 园艺·草业 • 上一篇    下一篇

外施赤霉素对重瓣大花萱草开花、内源激素和酶活性的影响

陈芬, 罗桂杰, 谭军   

  1. 江苏省农业科学院 宿迁农科所,江苏 宿迁 223800
  • 收稿日期:2020-02-04 出版日期:2020-04-20 发布日期:2020-07-17
  • 通讯作者: 罗桂杰(1981—),女,副研究员,硕士,主要从事林木、果树、花卉的研究工作。
  • 作者简介:陈芬(1983—),女,助理研究员,硕士,主要从事林木、果树、花卉的研究工作。
  • 基金资助:
    2019年江苏省宿迁市农业科技自主创新资金项目(SQCX201901)

Effects of spraying gibberellin on flowering, endogenous hormones and enzyme activities in Hemerocallis fulva (L.) var. kwanso Regel “Double Firecracker”

CHEN Fen, LUO Guijie, TAN Jun   

  1. Suqian Institute of Agricultural Sciences,Jiangsu Academy of Agricultural Sciences,Suqian 223800,China
  • Received:2020-02-04 Online:2020-04-20 Published:2020-07-17

摘要: 【目的】了解赤霉素(GA3)对重瓣大花萱草开花及生理特性的影响。【方法】选用重瓣大花萱草蕾丝方巾为试验材料,设置4种不同浓度赤霉素(GA3)叶面喷施试验,观察开花情况,比较不同处理对内源激素和酶活性的影响。【结果】在重瓣大花萱草蕾丝方巾开始抽葶时喷施不同浓度赤霉素(GA3)均能使花期提前、花量增加,尤其是喷施1 000 mg/kg赤霉素(GA3)处理,花期、花量显著优于对照和其他各处理,起始花期比对照提早11 d,花量是对照的127.5%;喷施不同浓度赤霉素(GA3)处理均可提高花芽中生长素(IAA)和赤霉素(GA3)含量,降低脱落酸(ABA)含量,促进花芽超氧化物歧化酶(SOD)、过氧化物酶(POD)活性,抑制过氧化氢酶(CAT)活性。【结论】采用赤霉素(GA3)叶面喷施可促进重瓣大花萱草蕾丝方巾开花、延长花期,增加花芽内源激素IAA、GA3含量,激发SOD、POD活性,实现花期调控。

关键词: 重瓣大花萱草, 赤霉素, 生长素, 脱落酸, 酶活性

Abstract: 【Objective】To investigate the effect of GA3 on flowering and physiological characteristics of Hemerocallis fulva (L.) var. kwanso Regel.【Methods】Hemerocallis fulva (L.) var. kwanso Regel lace squares were selected as experimental materials. Four concentrations of gibberellin (GA3) foliar spraying to observe the effects of flowering of lace squares,endogenous hormones and enzyme activities.【Results】When Hemerocallis fulva (L.) var. kwanso Regel lace squares began to produce scape,sprayed different concentration of gibberellin (GA3) could early its flowering time and flowering number,especially spraying 1 000 mg/kg of gibberellic acid (GA3), initial flowering 11 d early and 127.5% more flower number compared with control ; Spraying different concentrations of gibberellin (GA3) could increase the content of IAA and gibberellin (GA3),and decreased abscisic acid (ABA),promoted the activities of superoxide dismutase (SOD) and peroxidase (POD) in flower buds, and inhibited the activities of catalase (CAT).【Conclusion】Applying gibberellin (GA3) on the leaf surface could promote the flowering of the lace kerchief,prolong the flowering period, increase the content of IAA and GA3, stimulate the activity of SOD and POD, and realize the regulation of flowering period in Hemerocallis fulva (L.) var. kwanso Regel.

Key words: Hemerocallis fulva (L.) var. kwanso Regel, Gibberellin(GA3), Auxin, Abscisic acid, Enzyme activity

中图分类号: 

  • S682.19