作　　者： ; ; ; ; ; ;

机构地区： 仲恺农业工程学院园艺园林学院

出　　处： 《北方园艺》 2011年第22期64-67,共4页

摘　　要： 研究了人工气候箱里东南景天在不同植物激素(NAA 1 000mg/L、IBA 500mg/L)和不同空气湿度(60%、80%)组合下茎插繁殖和在不同基质的叶插繁殖。结果表明:光照强度80%和温度20～25℃下东南景天叶插插穗在蛭石∶珍珠岩=1∶1基质上生根最快、根长最长、根量最多、成活率最高,且都显著优于其它基质(p<0.05,下同);东南景天茎插在60%空气湿度下显著优于湿度80%的、插穗用IBA处理比用NAA处理要好;60%空气湿度下经IBA 500mg/L处理过的东南景天茎插插穗的生根最快,成活率、累计发芽率、根量评分最高,发芽略慢,最长根长略短,但植株整体生长状态最好,且都明显优于其它处理,是进行茎插繁殖的最佳处理组合。该研究为东南景天的快速繁殖、资源保护以及重金属污染土壤修复应用提供技术保障。 In order to study the propagation of stem cutting of the of Sedum alfredii Hance（abbr.to Sedum）,the combined treatments constituted by different plant hormones（NAA 1 000 mg/L,IBA 500 mg/L）and air humidity（60%,80%）were designed in the experiment;and in order to study leaf cutting of Sedum,different soil matrix made up by different proportions of garden soil,sands,peat soil,perlite and vermiculite were also designed in the study.Their survival rate,cumulative germination rate,least germination days needed,cumulative rooting rate,root biomass,longest root length and days from growth of roots were determined in the trial.The results showed that when cuttinged in the soil matrix with 1 part pearlit plus 1 part perlite,the Sedum root fastest,root length was the longest,root volume was the largest and survival rate was the highest under 80% of light intensity and air temperature maintained at 20~25℃,and were significantly superior to other substrates（p〈0.05,the same as below）.Cutting of treat combination of 60% air humidity and IBA（500 mg/L）soaking the stem inserted,the Sedum root the earliest,their root biomass was the highest,and their survival rate and progressive germination rate were the hightest,so the treat was significantly better than the others and was the optimal treatment combination.And 60% air humidity better than 80% air humidity and IBA-treatment was better than IAA-treatment.Some basis theories hyperaccumulation ecotype of rapid propagation,large-scale,factory production were provided in this study.

关 键 词： 东南景天 茎插 叶插 空气湿度 植物激素

领　　域： [农业科学] [农业科学] [农业科学]