南京林业大学学报(自然科学版) ›› 2004, Vol. 47 ›› Issue (03): 79-82.doi: 10.3969/j.jssn.1000-2006.2004.03.020

• 研究论文 • 上一篇    下一篇

杂种鹅掌楸扦插生根过程中内源激素的变化

张晓平;方炎明;黄绍辉   

  1. 南京林业大学;江苏 南京 210037安徽师范大学,安徽 芜湖 241000;南京林业大学;江苏 南京 210037;南京林业大学;江苏 南京 210037
  • 出版日期:2004-06-18 发布日期:2004-06-18

The Endogenous Hormoe’s Variation During the Adventitious Roots Formation of Hybrid Tuliptrees by Cutting

ZHANG Xiao-ping~(1,2),FANG Yan-ming~(1*),HUANG Shao-hui~1   

  1. 1.Nanjing Forestry University,Nanjing 210037,China;2.Anhui Normol University,Wuhu 241000,China
  • Online:2004-06-18 Published:2004-06-18

摘要: <正>以杂种鹅掌楸为材料,应用酶联免疫吸附测定法(ELISA),研究杂种鹅掌楸插条在扦插生根过程中内源激素含量的变化。结果表明:在不定根发生过程中,5种内源激素在插穗基部和叶内含量总体呈上升趋势,少数下降。各种内源激素在叶内的含量远远高于插穗基部。外源激素(300mg/kgNAA和100mg/kgIBA)处理提高了iPAs和IAA在插穗基部和叶内的含量,却降低了ZRs和ABA的含量,对GA1/3的作用有些不稳定。杂种鹅掌楸插穗内IAA的含量很低,而插穗和叶内ABA的含量却很高,这对不定根的发生很不利。

Abstract: Liriodendron chinense(Hemsl.)Sarg.×L.tulipifera L.is known for its difficulty in propagation by cutting. In this investigation,endogenous hormone dynamics in cuttings during adventitious root formation,was studied in detail.The result indicated that the endogenous hormone,including iPA,ZRs,GA_(1/3),IAA,ABA,changed remarkably during adventitious root formation,Contents of those five kinds of endogenous hormone are much higher in leaves than that in the basal part of the cuttings.The treatment of 300 mg/kg IBA+100 mg/kg NAA enhanced the content of iPA and IAA in leaves and basal stems,while the opposite result occurred in contents of ZRs and ABA.Low contents of the IAA and high percentage of ABA in cuttings and leaves are disadvantageous to the adventitious roots formation.

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