香椿扦插育苗及其矮化试验  

Preliminary Study on Cutting Propagation and Dwarfing of Toona sinensis

作　　者：金晏玲 方颖[1] 赵奎元[1] 杨谷良[1] 

机构地区：[1]黄冈师范学院化学与生命科学学院/经济林木种质改良与资源综合利用湖北省重点实验室,湖北黄冈438000

出　　处：《湖北农业科学》2013年第10期2325-2327,共3页Hubei Agricultural Sciences

基　　金：黄冈师范学院2011年实验教学示范中心大学生创新活动项目(zx1155)

摘　　要：采用不同浓度的萘乙酸溶液对香椿一年生半木质化枝条浸泡12 h进行扦插育苗,结果当萘乙酸溶液浓度为200 mg/L时,香椿插穗的生根率、每穗最多根数、每穗平均根数、主根长度及根系平均根长均达到了最大值水平,且与无萘乙酸处理的插穗之间差异极显著,扦插育苗的效果最优。采用不同浓度的多效唑溶液喷施香椿扦插苗,结果当多效唑溶液浓度为1.00 g/L时,香椿扦插苗的株高最矮,节间距最短,茎粗最大,叶片叶绿素含量最高,且与无多效唑处理的扦插苗之间差异极显著,矮化效果最优。1-year-old semi-lignified branches of Toona sinensis(A.Juss.)Roem were soaking in 1-naphthalene acetic acid(NAA) solution with different concentration for 12 h for cutting propagation.When the concentration of NAA solution was 200 mg / L,rooting rate,maximum number of roots per cutting,average number of roots per cutting,length of main root,and average length of roots of T.sinensis cuttings reached the highest;and was significantly higher than the cuttings without NAA treatment,had the best cutting propagation effect.Spraying the T.sinensis cuttings with different concentration of paclobutrazol,when paclobutrazol concentration was 1.00 g / L,the plant height of T.sinensis cuttings was the shortest,with the minimum node space,maximum stem diameter,and highest chlorophyll content,and was significantly different from the treatment without paclobutrazol,had the best dwarfing effect.

关 键 词：香椿 扦插 萘乙酸 矮化 多效唑 

分 类 号：S[农业科学]