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外源激素IAA和GA3对马尾松应压木形成的影响

陈海燕 刘凯 余敏 王娟 赵磊 刘盛全

陈海燕, 刘凯, 余敏, 王娟, 赵磊, 刘盛全. 外源激素IAA和GA3对马尾松应压木形成的影响[J]. 北京林业大学学报, 2015, 37(5): 134-139. doi: 10.13332/j.1000-1522.20140405
引用本文: 陈海燕, 刘凯, 余敏, 王娟, 赵磊, 刘盛全. 外源激素IAA和GA3对马尾松应压木形成的影响[J]. 北京林业大学学报, 2015, 37(5): 134-139. doi: 10.13332/j.1000-1522.20140405
CHEN Hai-yan, LIU Kai, YU Min, WANG Juan, ZHAO Lei, LIU Sheng-quan. Effects of exogenous IAA and GA3 on formation of compression wood of Pinus massoniana Lamb.[J]. Journal of Beijing Forestry University, 2015, 37(5): 134-139. doi: 10.13332/j.1000-1522.20140405
Citation: CHEN Hai-yan, LIU Kai, YU Min, WANG Juan, ZHAO Lei, LIU Sheng-quan. Effects of exogenous IAA and GA3 on formation of compression wood of Pinus massoniana Lamb.[J]. Journal of Beijing Forestry University, 2015, 37(5): 134-139. doi: 10.13332/j.1000-1522.20140405

外源激素IAA和GA3对马尾松应压木形成的影响

doi: 10.13332/j.1000-1522.20140405
基金项目: 

国家自然科学基金项目(31270598)。

详细信息
    作者简介:

    陈海燕。主要研究方向:外源激素对应力木形成调控机理。Email:18949882794@163.com 地址:230036 安徽省合肥市长江西路130号安徽农业大学林学与园林学院。责任作者: 刘盛全,博士,教授。主要研究方向:木材科学与技术。Email:liusq@ahau.edu.cn 地址:同上。

    陈海燕。主要研究方向:外源激素对应力木形成调控机理。Email:18949882794@163.com 地址:230036 安徽省合肥市长江西路130号安徽农业大学林学与园林学院。责任作者: 刘盛全,博士,教授。主要研究方向:木材科学与技术。Email:liusq@ahau.edu.cn 地址:同上。

Effects of exogenous IAA and GA3 on formation of compression wood of Pinus massoniana Lamb.

  • 摘要: 为丰富马尾松培育及材质改良的思路和方法,探索外源激素对马尾松应压木形成的影响。以人工倾斜45°的3年生马尾松作为试验材料,通过连续施加不同浓度的IAA、GA3、IAA+GA3对枝条的生长进行调控,分别观测马尾松当年生枝条的长度,韧皮部、木质部的径向宽度,管胞长度、管胞壁厚,管胞数量,应压木的等级并比较相应差异,分析这两种激素对应压木形成的影响。结果表明:所有激素处理组枝条的增长率明显提高(89.6%~179.1%);施加GA3、IAA+GA3能促进枝条木质部和韧皮部的径向生长,但施加IAA对木质部、韧皮部的生长影响不显著;与空白对照组相比,GA3、IAA+GA3处理组倾斜枝条下侧的管胞数量降低(14~17层),上侧管胞数量上升(5~11层);施加GA3、IAA+GA3使倾斜枝条下侧形成中等应压木,对照组和IAA处理组倾斜枝条下侧均形成重度应压木。说明外源激素能促进马尾松倾斜枝条的顶端生长,在倾斜枝条上侧施加外源激素能抑制倾斜枝条应压木的形成。

     

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  • 收稿日期:  2014-11-02

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