剪叶对地黄生长及其生理特性的影响  

Effects of leaf removal on growth and physiological characteristics of Rehmannia glutinosa

作　　者：牛苗苗[1] 范华敏[1] 李娟[1] 杜家方[1] 陈新建[1] 张重义[1] 

机构地区：[1]河南农业大学中药材研究所,河南郑州450002

出　　处：《中国中药杂志》2011年第2期107-111,共5页China Journal of Chinese Materia Medica

基　　金：国家自然科学基金项目(30772729;30973875);国家"十一五"科技支撑计划项目(2006BA109B03)

摘　　要：目的:通过对正茬地黄不同生长阶段,进行不同程度的减源(叶片)处理,探讨地黄块根(库)的膨大与源库之间的关系。方法:测定分析源库比改变条件下地黄不同时期的生长指标、叶绿素含量、根系活力及糖含量等生理生化指标的变化。结果:随着剪叶(T1,T2,T3)程度的加大,植株地上、地下生长速度降低,相对于不剪叶处理块根膨大抑制率依次为17.53%,33.41%,59.47%,叶绿素含量降低,光合源产物合成能力不足,抑制了根系活力,地上、地下糖含量减少。结论:地黄块根的膨大,并不是单一由源的大小所决定,而是植株地上地下源库相协调平衡的作用结果,叶绿素含量可以作为其光合源能力的一个指标,地黄根系活力降低、糖含量下降影响植株生长和块根膨大。Effects of the leaf-clipped treatment on growth and physiological properties of Rehmannia glutinosa were studied.Result showed that with the increase of the cutting leaves degree,growth rates of shoots and roots were decreased,sugar contents declined,chlorophyll contents decreased and root activities also inhibited.Compared with the normal plant（CK）,the root inhibit rates in T1,T2,T3 were 17.53%,33.41%,59.47%,respectively.Physiological indexes including chlorophyll contents,root activities and sugar contents also were impacted by the leaf-clipped treatment.The results indicate that to balance source-sink relationship is a very essential method for improving production of R.glutinosa.

关 键 词：地黄 源库比 叶绿素 根系活力 可溶性糖 

分 类 号：S567.234[农业科学—中草药栽培]