多胺对烟株生长发育及烤烟产质的生理效应

Physiological Effects of Polyamine on the Growth and Development of Tobacco, the Quality and Yeild of the Leaves

对盆栽的烤烟叶面喷施多胺可以促进烟株生长发育,提高烤烟品质。主要表现为:提高叶片叶绿素含量、光合强度及硝酸还原酶活性;促进叶面积的增长,增加叶片叶质重、单叶重;促进烟株侧根的发生,对根干重和根系活力有显著提高作用,并使根系在相当长时期内维持较高的活力;促进碳氮代谢,明显提高叶片烟碱含量,同时,对叶片总氮、还原糖、类胡萝卜素含量也有一定提高作用;显著提高单株烟叶产量。

The foliar application with polyamine could promote the growth and development of tobacco plant and improve the quality and yeild of the leaves,namely:(1) raising chlorophyll content,Photosynthetie rate and nitrate reductase activity of the leaves;(2) promoting the growth of the leaf area,raising specific leaf weight and therefore single leaf weight;(3) stimulating the initiation of adventitious roots and significantly raising the vigor and dry weight of roots as well as making the roots maintain higher vigor for rather a long time;(4) promoting the metabolism of carbon and nitrogen,significantly increasing the nicotine content while definitely raising the total nitrogen,reducing sugar and carotenoid content of the leaves;(5) signifi- cantly raising the leaf yeild of single tobacco plant.