外源NO供体SNP对欧洲云杉插穗生根的效应  

Effects of Exogenous NO Donor SNP on Cuttage Rooting of Picea abies

作　　者：安三平 王丽芳 王美琴 马建伟 张宋智 王军辉[2] 

机构地区：[1]小陇山林业科学研究所,甘肃天水741002 [2]中国林业科学研究院林业研究所国家林业局林木培育重点实验室,北京100091

出　　处：《西北林学院学报》2012年第4期124-128,共5页Journal of Northwest Forestry University

基　　金：农业科技成果转化资金项目(2010GB24320611);林业科技成果国家级推广计划项目(2009-5);甘肃省科技重大专项(1102NKDE028)

摘　　要：对SNP处理欧洲云杉的最适浓度、最佳处理时间、不同插穗年龄和侧枝类型以及SNP、IBA、NAA促进生根效果的比较等方面进行了系统研究。结果表明:一定浓度SNP均能显著促进欧洲云杉的生根和侧根的发生,50mg·L-1 SNP处理5h是SNP促进欧洲云杉生根的最佳浓度和最佳时长;SNP和IBA处理,均可明显促进欧洲云杉的生根,SNP的生根数量、平均根长均最佳;SNP处理的插穗年龄和侧枝类型对欧洲云杉的响应较大,1龄和一级侧枝可明显提高扦插成活率,内源NO在侧根发生及其形成中可能起着重要作用。Effects of sodium nitroprusside （SNP） on cottage rooting of Picea abies were systemically exam- ined from the aspects of optimal concentration, optimal treatment time, age of cuttings, and lateral branch types. The results were compared with those of IBA and NAA. It was found that SNP in certain concen- trations could significantly promote rooting and lateral roots development. The optimal concentration and optimal treatment time were 50 mg · L-1 and 5 h, respectively. Treated by SNP and IBA, the rooting could significantly be promotes, the number of rooting, average root length were optimal after treated by SNP. Differences were observed among the cuttings with different ages and lateral branches with different types after treated by SNP. Higher survival rates were found in one-age cuttings and I--lateral branches. Exogenous NO had an important role in lateral roots development.

关 键 词：硝普钠(SNP) 一氧化氮 欧洲云杉 生根 

分 类 号：S723.13[农业科学—林木遗传育种]