红桤木扦插生根过程中内源激素的变化  

Dynamics of of Endogenous Hormones during the Process of Adventitious Root Formation in Red Alder

作　　者：吕梅[1] 方炎明[1] 贾恒[1] 王爱霞[1] 

机构地区：[1]南京林业大学森林资源与环境学院,南京210037

出　　处：《林业科技开发》2009年第2期16-19,共4页China Forestry Science and Technology

基　　金：国家林业局"948"项目"美国材用阔叶树良种选育及造林技术引进"(编号:2003-4-09)

摘　　要：研究表明,不同植物生长调节剂对红桤木嫩枝扦插的生根率作用效果不同。GGR-6的浓度对红桤木的生根有影响,IBA、NAA降低了红桤木的生根率。在研究硬枝扦插的基础上,试验共分6次测定了扦插生根过程中内源激素的含量,其初终值为:IAA106.66ng/(g.FW)和162.9ng/(g.FW),GA1/316.62ng/(g.FW)和25.37ng/(g.FW),ZR8.2ng/(g.FW)和22.59ng/(g.FW),均呈"上升-下降-上升"趋势,谷值出现在第37天。ABA(176.54ng/(g.FW)和150.02ng/(g.FW))呈"下降-上升-下降",峰值也出现在第37天。The test showed that different plant growth regulators had different effects on the rooting rate of epicomic branches of red alder. In the experiment, cuttage with epicomic branches were treated with GGR -6, IBA and NAA at different concentrations. The results showed that GGR -6 could promote the epicomic branch to root with the suitable treatment concentration; But IBA and NAA reduced rooting rates at any concentrations. We determined the contents of endogenous hormones at different time points （0 d, 20 d, 30 d, 37 d, 42 d, 45 d） during rooting process of mature branch cutting. Initial and final values of different endogenous hormones in the cuttings within the period were listed here： 106.66 ng/（g·FW） and 162.9 ng/（g·FW） for IAA, 16.62 ng/（g·FW） and 25.37 ng/（g·FW） for GA1/3, and 8.2 ng/（g·FW） and 22.59 ng/ （g· FW） for ZR. The full data demonstrated that the levels of IAA,GA1/3 ,ZR presented a tendency towards ＂up-clownup＂, with the valley value at the 37th day. The ABA levels, 176.54 ng/（g.FW） and 150.02 ng/（g-FW） for the initial and final values, showed an opposite tendency towards ＂down-up-down＂, with the peak value at the 37th day.

关 键 词：红桤木 扦插生根 植物生长调节剂 内源激素 

分 类 号：S668.4[农业科学—果树学] S793.605[农业科学—园艺学]