摘要
优树根萌苗是从根周皮内潜伏芽中产生,因此消除了原选优树的成熟效应(老化)、位置效应(斜长)和母树年龄差别,从而使幼树恢复了幼年性、一致性和可比性,为无性系测定和无性系造林创造了条件。所以,用根萌苗来繁殖优树已成为目前一种重要的方法,我们在杜仲优树的繁育中也采用了这种方法,并对杜仲优树根萌苗的返幼特性进行了研究。
The rejuvenation character of root-sprouts of Eucommia ulmoides was studied. The result shows that the juvenility of root-sprouts is similar to that of one-year-old seedlings of this tree species. This character could be kept up to the age of two years and then weaken evidently. Therefore it would be suggested that the effective range of ages for collecting soft cuttings of Eucommia ulmiodes should be either 1-year-old root sprouts or 1-year-old trees.
出处
《林业科学》
EI
CAS
CSCD
北大核心
1991年第5期555-559,共5页
Scientia Silvae Sinicae
关键词
杜仲
优树
根萌苗
幼化特性
Eucommia ulmoides
Plus tree
Root-sprout
Rejuvenation
