欧美杨新无性系生根性研究  

RESEARCH ON THE ROOTING PROPERTIES OF THE NEW CLONES OF POPULUS EURAMERICANA

作　　者：朱湘渝[1] 王瑞玲[1] 黄东森[1] 

机构地区：[1]中国林业科学研究院林业研究所

出　　处：《林业科学》1991年第2期163-167,共5页Scientia Silvae Sinicae

摘　　要：大多数杨树都比较容易扦插生根,然而随着树木改良工作的发展,人们对于林木无性繁殖的重要性有了新的认识,特别是从理论和实践两方面加强了对扦插生根的研究。本文是研究以I-69杨×欧洲黑杨中选育的新无性系苗木的生根性,并测定扦插繁殖能力。Research on the rooting properties of 5 new clones of Populus euramericana shows: 1. The clones initiate a great number of root primordia, rooting early and with many lateral roots and long adventitious roots. The rooting percentages of these clones are high. The rooting performance is apparently better than that of the parents, P. deltoides Bartr. cv. Lux and P. nigra. 2. The high general haritability of rooting percentages shows that rooting properties are mainly controlled by inherity. 3 . Temperatures from 20 to 25℃ are good for rooting. 4. Sufficienc water content of the cuttiug is the necessary condition for rooting, and water decifit is an important faclor of reducing rooting percentage. Whereas water soaking is a simple and effective method for increasing viability of the cutting.

关 键 词：欧美杨 无性系 生根性状 杨 

分 类 号：S792.110.4[农业科学—林木遗传育种]