杨树新无性系扦插生根特性的研究  

A Study on Rooting Characteristics of Cuttings of New Poplar Clones

作　　者：李桂英[1] 吕士行[1] 

机构地区：[1]中国林业科学研究院亚热带林业研究所,南京林业大学

出　　处：《林业科学研究》1994年第2期168-174,共7页Forest Research

摘　　要：以杨树新无性系ＮＬ－８０ｌ０６、ＮＬ－８０１２１和ＮＬ－８０３５１为材料，从解剖学角度研究其扦插生根的机理。结果表明，无性系ＮＬ－８０１０６的生根能力较ＮＬ－８０１２１和ＮＬ－８０３５１强；插穗的不定根原基在母株生长早期形成，起源于射线与形成层交叉处；不定根原基的数量随着苗高的增长而增多；但插穗的生根能力与不定根原基的数量关系不大。The rooting mechanism of cuttings from three new.poplar clones (NL-80l06,NL-80121,NL-80351) has been studied from the anatomical view point.The results showedthat clone NL-80l06 had better rooting ability than the other two clones, The latent rootagetissues of cuttings can be formed on the ortet during the early period of growth,which camefrom the crossband of rays and camibium of roots。The number of latent rootage tisstiesincreased with the increase of seedling growth,The relationship between rooting ability andthe number of latent rootage tissues is not significant。

关 键 词：杨树新 无性系 不定根原基 扦插 

分 类 号：S792.110.4[农业科学—林木遗传育种]