南京林业大学学报(自然科学版) ›› 2016, Vol. 40 ›› Issue (05): 191-196.doi: 10.3969/j.issn.1000-2006.2016.05.030

• 研究简报 • 上一篇    

NAA对薄壳山核桃扦插生过程中内源激素含量变化的影响

吴文浩1,曹 凡2,刘壮壮2,彭方仁2 Symbolj@@ ,梁有旺2,谭鹏鹏2   

  1. 1. 句容市林业科技推广中心, 句容市林业局, 江苏 镇江 212400;
    2.南方现代林业协同创新中心, 南京林业大学林学院,江苏 南京 210037
  • 出版日期:2016-10-18 发布日期:2016-10-18
  • 基金资助:
    收稿日期:2015-10-26 修回日期:2016-05-25
    基金项目:国家林业局“948”项目(2015-4-16); 江苏高校优势学科建设工程资助项目(PAPD)
    第一作者:吴文浩(290246609@qq.com),主要负责试验材料处理与管理以及论文修改; 曹凡(caofan90@126.com),主要负责论文的数据收集与论文初稿的撰写。*通信作者:彭方仁(frpeng@njfu.edu.cn), 教授。
    引文格式:吴文浩,曹凡,刘壮壮,等. NAA对薄壳山核桃扦插生根过程中内源激素含量变化的影响[J]. 南京林业大学学报(自然科学版),2016,40(5):191-196.

Effects of NAA treatment on the endogenous hormone changes in cuttings of Carya illinoinensis during rooting

WU Wenhao1, CAO Fan2, LIU Zhuangzhuang2, PENG Fangren2*, LIANG Youwang2, TAN Pengpeng2   

  1. 1. Jurong Forestry Science and Technology Extension Center, Jurong City Forestry Bureau of Jiangsu Province, Zhenjiang 212400, China;
    2. Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing 210037, China
  • Online:2016-10-18 Published:2016-10-18

摘要: 采用当年生薄壳山核桃休眠枝为插穗,分别进行不同NAA浓度处理的硬枝扦插试验,研究薄壳山核桃硬枝插穗在扦插生根过程中内源激素的变化。结果表明:①500 mg/L NAA处理插穗的生根效果最佳,生根率可达79.6%; ②通过外源激素处理,IAA、ZR、GA、ABA 4种内源激素在插穗不定根形成过程中含量发生相应改变,从而影响插穗的生长; ③在不定根形成初期,即NAA处理后30 d左右,与对照组相比,各处理组插穗的IAA和ZR含量处于较高水平, GA和ABA含量处于较低水平; ④薄壳山核桃插穗愈伤组织的形成、不定根的产生和伸长生长等都主要受IAA/ZR调控。

Abstract: This experiment used 1-year-old pecan dormant branches as the hardwood cuttings. One of two trials compared the NAA treatment group and CK controlled group, the other one focused on the different concentrations of NAA treatment groups. Both of them were conducted to study the changes of endogenous hormones in the process of cutting rooting for providing physiological foundation of pecan hardwood cutting research. The results showed that the exogenous hormones treatment changed four endogenous hormone(IAA, ZR, GA and ABA)content of pecan hardwood cuttings in the process of adventitious root formation. ①The endogenous IAA content was relatively low and it was beneficial to the growth of adventitious roots. ②The low concentration of endogenous GA content could delay the bud break of cuttings. ③The low concentration of endogenous ABA content was favorable for the formation of root primordia; High level of endogenous ABA content improved the resistance of cuttings and reduced decay phenomenon. ④The formation and development of callus or the adventitious roots of pecan hard wood cuttings were mainly regulated by the IAA/ZR ratio.

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